Integrated, Self-Powered—Self-Processed, Industrial Systems
User Manual
ISIS 215SB
2 x 15” Weather-Resistant Subwoofer Cabinet with Speakon™ Input Connector
ISIS 215PCM
3000 Watt Powered Subwoofer and 3600 Watt, 2-channel “Top Box” amplifier,
Computer Configurable DSP for each Amplifier, Integral Wheels and Handles.
*TD-000105-00*
TD-000105-00 rev.A
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TABLE OF CONTENTS
INTRODUCTION
General Overview...........................................................................................4
Technical Overview........................................................................................6
Block Diagram.................................................................................................7
UNPACKING
Unpacking and Inspection..................................................................................8
What is Included.............................................................................................8
WHERE DO I START?...................................................................................................9
PREPARATION FOR FIRST USE
Amplifier Gain Controls..........................................................................10
CONNECTIONS
AC Power.......................................................................................................11
Processor RS-232......................................................................................12
Mode Switch.....................................................................................13
XLR Audio Inputs..............................................................................14
Post-Processor Outputs...................................................................16
DataPorts...................................................................................17
Outputs..............................................................................................18
USE
Cooling Air Intake and Exhaust Vents...........................................................19
AC Power Switch and LED Indicators............................................................20
Important User Warning Regarding Power Levels...................................21
System Requirements and Software Installation.........................................22
General Guidelines for Freely-Configurable DSP.......................................23
Saving Presets..............................................................................................24
Configuring the Processors (examples of Signal Manager software).......25
TROUBLESHOOTING...................................................................................28
SPECIFICATIONS
215SB Dimensions........................................................................................31
215SB Acoustic Performance.....................................................................32
215SB Specifications...................................................................................33
215PCM Dimensions......................................................................................34
215PCM Specifications.................................................................................35
215PCM Power Amplifier‘s Specifications.........................................................36
215PCM Digital Signal Processor’s Specifications........................................37
APPENDIX
Contact Closure Wiring...................................................................................38
RS-232 Pinout..............................................................................................39
WARRANTY INFORMATION .............................................................................................40
HOW TO CONTACT QSC AUDIO PRODUCTS .........................................................40
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INTRODUCTION- General Overview
Composilite™
Introduction
QSC enclosures incorporate Composilite, a patented cored
composite technology that yields superior acoustic
properties, lighter weight, and greater weather resistance
compared to conventional enclosure materials. Multiple
skins of carbon fiber are layered over a honeycomb core to
form a rigid, seamless enclosure. The extreme stiffness of
Composilite construction prevents flexing of the cabinet
enclosure, significantly reducing energy loss due to
cabinet vibration. The result is reduced enclosure loss,
increased low frequency output, and substantially less
sound radiating from the back and sides of the enclosure
for greater sonic accuracy. Furthermore, the enclosure’s
light weight translates to safer rigging and reduced
handling costs.
Thank you and congratulations on your purchase of the
ISIS 215PCM Powered-System Control Module or 215SB
Subwoofer. This product represents the state-of-the-art in
all-weather, lightweight SR (sound reinforcement)
loudspeaker systems. The “215” marks the introduction of
QSC’s ISIS loudspeaker systems. ISIS is short for Inte-
grated, Self-Powered—Self Processed, Industrial
Systems. To get the most from your investment, we
encourage you to review this manual carefully.
The 215PCM is a self-contained active subwoofer system
with dual 15-inch drivers. It provides power amplification
not only for itself, but also two channels for driving full-
range or biamp “top box” speakers as well. It is the most
advanced core module for portable live sound reinforce-
ment systems and is ideal for corporate and industrial
events. The 215SB is a passive subwoofer system with no
backpack electronics, equipped with a single Speakon™
connector.
215SB Subwoofer Highlights
The frequency response of the 215PCM is 35 to 150 Hz (-3 dB). Two 15-inch, diametrically opposed (facing each other) drivers
fire in opposite directions with equal excursion. The net effect being the driver forces counterbalance, minimizing vibration in
the cabinet. This is essential in lightweight, ultra-stiff cabinet designs to keep the walls from vibrating excessively and to keep
the cabinet from “walking away” during use.
215PCM Powered Control Module Highlights
The “PCM” version adds a 55 pound amplification and signal processing backpack to the 215SB subwoofer cabinet. This
backpack houses two independent power amplifiers, one for the subwoofer and one for the “top boxes”. Driving the subwoofer
is the equivalent of a bridged-mode PL230 amplifier providing up to 3000 watts to the two 15-inch drivers. Top boxes are
powered by the equivalent of a PL236 amplifier (725 W/ch. @8 ohms, 1100 W/ch. @ 4 ohms, 1850 W/ch. @ 2 ohms). Signal
processing is provided by two DSP-3 Digital Signal Processors with 24-bit, 48 kHz. convertors. Both processors have eight user-
configurable and -selectable presets. An RS-232 connection to a PC running the provided QSC Signal Manager Software
enables system tuning and configuration.
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INTRODUCTION- General Overview
215PCM Front
A 16” length of “L-track” flying
hardware is featured on all
four corners of the cabinet.
Pole cups are featured for
either cabinet orientation.
One, shown, on the shorter
side, and two on the longer.
215PCM Rear
Rubber feet are featured on the
bottom of the cabinet, as viewed,
and on the end in cases where it is
desired to stand the cabinet up.
The four hard-rubber strips (on the
right of the cabinet) provide
protection to the cabinet back when
moving up or down stairs and curbs.
Transporting the 215PCM using
integral wheels and handles.
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INTRODUCTION- Technical Overview
Technical Overview:
The Subwoofer Processor’s OUT1 DSP port is connected to
CH1 and CH2 Inputs are connected to the Top Box Processor
and to the Mode Switch. In Combination Mode, the Mode
Switch connects CH1 and CH2 Inputs to the Subwoofer
Processor as well. In Discrete Mode, CH1 and CH2 Inputs
are disconnected from the Subwoofer Processor, and Input
3 is used to feed the Subwoofer Processor.
the Subwoofer amplifier’s CH1 Input. The Subwoofer
amplifier is operated in Bridge Mode. The amplifier has no
filtering. All desired processing must be done in the
Processor. The Bridge Mono outputs are wired internally to
the subwoofers.
Post Processor output connections are provided on each
Processor. These 3-pin terminal block connectors make
daisy-chaining the processed signal to other equipment a
snap.
Independent DSP is provided for each amplifier. The DSP
engines are 24-bit resolution, 48 kHz. sampling rate. They
boast less than 0.01% THD+N, 20 Hz. -20 kHz. 0.7dB
frequency response and a dynamic range exceeding 93 dB.
All that is required is configuring the Processors with the
desired signal chain before use.
The amplifiers are modified QSC Powerlight2 models. They
feature PowerWave™ high frequency switching power
supplies for maximum performance and minimum weight.
Gain controls are preset to full, but each amplifier’s Gain
controls are accessible through small access holes in the
respective cooling air intake grill; this allows a relatively
tamper-proof maximum gain setting. The amplifiers provide
features such as soft-start inrush current limiting, tempera-
ture-tracking bias control, variable speed cooling fans, and
full output protection.
Each Processor must be configured using QSC’s Signal
Manager software, included with the 215PCM. Install the
software on a PC meeting the specified system require-
ments, then connect to the Processors (one at a time) with
an RS-232 connection and run Signal Manager. Each
Processor has 8 Preset memories enabling the most used
configurations to be saved as convenient, easy to recall
Presets. The last applied configuration will be the power-on
default, ensuring the system powers-up in the state it was
last left. Refer to the software’s on-line Help system for
detailed information. All software related operation
information is located in Signal Manager’s Help system.
A variety of Top Box speakers are connected to the
Speakon™ connectors on the rear panel. The upper
Speakon is wired for optional biamp use (4-wire), and the
lower Speakon is wired normally (2-wire). This connection
scheme allows for biamp users to plug into one connector
for all four biamp wires, while still keeping the standard
two Speakons for two channel applications.
The Top Box Processor’s OUT1 and OUT2 DSP ports are
connected to the 3600 watt Top Box amplifier’s CH1 and
CH2 Inputs, respectively. The Top Box amplifier is configured
to operate in stereo mode without any filtering. All filtering
and is done in the Processor.
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INTRODUCTION- Block Diagram
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UNPACKING
Unpacking and Inspection
The 215PCM is highly durable and is carefully packaged and crated. We recommend you inspect the
unit carefully after removing it from the packaging, as occasionally there may be damage due to
some unfortunate incident during shipment. Report any damage to the shipping carrier. We
recommend saving the carton and packing material. It is always a good idea to keep the packaging
in case the unit must be shipped back to your dealer, distributor, or service center. Also note: some
freight companies consider damage claims without the original packing materials invalid.
When removing the loudspeaker from its packaging, grasp the unit using the integral handles on the
sides. The transducers are deeply recessed and covered with a strong metal grill, requiring no extra
care. Care is required in the control panel area on the rear of the cabinet. Be sure not to damage
any switches or connectors.
The QSC shipping box should contain:
1- The 215PCM system or 215SB cabinet
2- This Owner’s Manual
3- Power Cord: 120 Volt, 30 Amp, 3 feet long (215PCM only)
4- QSC Signal Manager Software CD
WHERE DO I START?
For 215SB Subwoofer Only Users-
1-
2-
Plug in your Speakon connection to the cabinet and use as any other passive subwoofer cabinet.
Refer to pages 31- 33 for Specifications and Performance Data.
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WHERE DO I START?
For 215PCM Powered Core Module Users-
Install the Signal Manager software on the PC that will be used to configure the 215PCMs processors. See page 20.
1-
2-
Put the 215PCM in a location that:
• ....is close enough to the PC to connect the serial cable.
•....has 120V, 30A service to power the 215PCM.
•....has enough room to make connections or adjustments.
Plug in the 215PCM. See page 11.
3-
4-
5-
6-
Connect the serial cable from the PC’s COM port to the Top Box Processor. See page 12.
Turn on the 215PCM.
Open the Signal Manager software on the PC. Signal Manager should read the configuration data for the processor you are
connected to and indicate ONLINE in its status window. If it does not, verify the correct COM port is selected using Signal
Manager’s Settings/DSP pull-down menu. See the Troubleshooting page 29 of this manual for more help if your PC can’t
communicate with your 215PCM’s Processor.
Configure the Top Box Processor as required for your application. Apply the configuration and save it. Click the ONLINE/
OFFLINE icon in the software; wait for the Status Indicator at the bottom of the Signal Manager window to indicate OFFLINE.
It is now safe to move the RS-232 connection from one processor to the other.
7-
8-
9-
Move the RS-232 connection from the Top Box Processor to the Subwoofer Processor being sure to connect properly. Click
the ONLINE/OFFLINE icon in the software. The Status Indicator will show ONLINE now. The configuration currently running in
the Subwoofer Processor will be displayed. This will take a few moments.
Configure the Subwoofer Processor as required by your application. Apply the configuration and save it. Click the ONLINE/
OFFLINE icon in the software; once OFFLINE is indicated, disconnect your Processor.
Set the MODE SWITCH in COMBINATION or DISCRETE MODE as required by the application. See page 13.
Connect the Top Box Speakers to the Top Box Outputs. See page 18.
10-
11-
•“Passive” Connection: Connect the two Top Box speakers to the two Output connectors
•“Active/Biamp” Connection: If using a 4-wire biamp connection (Neutrik NL4) use only the top Speakon.
Both channels are connected to the upper Speakon as noted next to the connector.
Test your system and alter your processing if you need to.
12-
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PREPARATION FOR FIRST USE- Amplifier Gain Controls
Adjusting the Gain Settings of the Amplifiers
Ordinarily, the Gain controls of the amplifiers are left set at full
gain. This is not recommended for first-time users of freely-
configurable DSP. Freely configurable DSP, while being the most
flexible and desirable, will do precisely what the user configures
it to do. This may not be the expected, desired result and could
damage your speakers or hearing. For this reason, QSC recom-
mends the initial “learning” sessions with the 215PCM be
carried out with the amplifier Gain controls set at their minimum
useful settings.
Each of the two cooling air exhaust vents (one on each end of
the cabinet) has two small, rectangular openings for adjusting
the Gain controls. The exhaust vent closest the wheels has the
access holes for the Subwoofer amplifier. The exhaust vent
closest the handles has the access holes for the Top Box
Amplifier.
Below, the illustration shows the location of the Subwoofer
amplifier’s gain adjustment access holes. The Top Box amplifier’s
access holes are on the vent located on the other end of the
cabinet (left, as viewed). The access holes are not labeled. This is
to discourage gain tampering after the 215PCM is set up. Use a 6-
inch #1 flat blade screwdriver or similar tool. Fiberglass-shaft TV
adjustment tools work well, are nonconductive, and won’t scratch
Gain control adjustment access holes (Sub-
equipment easily. Use a flashlight to aid in locating the gain
control.
woofer amplifier shown). The lower hole
accesses CH1’s gain control. CH2’s gain control
has no effect because the Subwoofer amplifier
is configured in bridge mono mode at the
factory. Access is available for CH2’s gain
control for users that modify the 215PCM. Note
that modifications may void warranty.
10
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CONNECTIONS- AC Power
AC Power Connection
The 215PCM requires a 120 Volt, 30 Amp connection to the AC mains.
The power connectors used are to be NEMA L5-30, or equivalent. The
serial number plate is imprinted with the operating voltage informa-
tion.
At peak output power, the 215PCM can supply up to 6,600 watts of
music power. At these levels, the AC line current can easily reach
levels in excess of 20 Amps. Proper AC connections are required at
such high power levels.
Connect the 30 Amp twist-lock connectors by orienting the locking L-
shaped prong with the corresponding connector entry, then fully insert
the three prongs. Twist the plug about 1/8 of a turn clockwise to lock
the connector and plug.
Power switch.
The 215PCM requires 120 Volt, 30 Amp AC
service. Attempting full power operation on
lower rated circuits may overheat wirirng
and cause breakers to switch off.
Use only heavy-duty 12 or 10 ga. extension
cords.
AC Power Switch
Above and to the right of the AC entry connector is the Power switch. The switch is labeled POWER ON, above it.
To turn the power on: Press in on the upper portion of the rocker switch. Both DSP-3’s blue Power indicators
should illuminate.
To turn the power off: Press in on the bottom portion of the rocker switch. It may take a few moments for
the Power LED’s to extinguish. This is normal.
215PCM AC connection. The keyed connector fits only one way. Align the “L” shaped tang with the mating
receptacle and fully insert, then twist 1/8 turn clockwise to lock in place. Reverse procedure to remove plug.
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CONNECTIONS- RS-232 Processor Configuration Connection
RS-232 Connection (215PCM only)
Each Processor has a 9-pin “D-sub” connector labeled RS-232. The RS-232 connection is used to configure the Processor
by connecting to the PC’s COM port.
Important points:
– The 215PCM must be ON (powered up) in order to configure the Processors.
– Each Processor is configured individually.
– The serial cable connection is not required after configuring a Processor.
– Configurations are kept in the Processor’s nonvolatile memory and on the PC.
RS-232: Used to setup (or configure)
the Processor. Connect to your PC’s
COM port using a normal 9-pin serial
data cable (25 ft. maximum length).
The Signal Manager software used to
create your DSP chain “talks” to the
Processor through the computer’s
COM port connection. Once the
Processor has been configured, RS-
232 connection is no longer required.
Any change to the Processor’s setup
requires the RS-232 connection to the
PC’s COM port.
To Configure a Processor (215PCM only)
1- Install the included Signal Manager software on a
PC/laptop meeting the minimum system requirements.
See page 22 for complete installation instructions.
2- Connect a normal 9-pin serial data cable between
your PC’s COM port and the RS-232 connector of the
Processor you want to set up (or configure).
3- Start the Signal Manager software and establish
communication between the PC and the Processor. If the
status indicator (bottom right of the Signal Manager
window) shows ONLINE, the software and Processor
are connected. If it does not, verify cable connections
and refer to the top of page 29, Troubleshooting.
4- Use the Help system to learn how to use Signal
Manager.
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CONNECTIONS- Mode Switch and Signal Routing
MODE SWITCH (215PCM only)
The position of the Mode Switch determines how the input signals are routed. Select your
operating mode before making connections. If you are using the DataPorts for audio input,
the Mode Switch has no effect. Refer to the diagram, below.
COMBINATION MODE– Use CH1 and CH2 Inputs OR Input 3 (mono).
Typical “Left-Right” mixes will provide a stereo feed for CH1 and CH2 Inputs. CH1 and CH2
Inputs will be routed to BOTH Processor’s IN1 and IN2 blocks (see diagram, below).
The mode switch effects how
the input signals are connected
to the Processors.
If only one input (mono) or one side of the mix is available, then use Input 3. Input 3 will
route the input to the IN1 block.
DISCRETE MODE– Use all three inputs. CH1 Input is routed to the Top Box Processor IN1
block, CH2 Input to IN2. Input 3 is connected to the Subwoofer Processor IN1 block. Note,
the Subwoofer Processor’s IN2 is not connected when operating in DISCRETE MODE.
SIGNAL ROUTING BY MODE SWITCH
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CONNECTIONS- Audio Connections: XLR Inputs
Audio Connections
Audio inputs can be connected to the XLR inputs OR the
DataPort connections (QSControl users). This section
provides information on using the XLR Inputs, For DataPort
information see page 17.
XLR Inputs
The position of the Mode Switch determines how the input
signals are routed. Select your operating mode before
making connections. See page 7, Block Diagram.
CH1 and CH2 INPUT - In Combination Mode, use these for
2-channel inputs. For mono input, use Input 3 and leave
CH1 and CH2 inputs unused. In Discrete Mode, CH1 and
CH2 Input feed the Top Box Processor only.
COMBINATION MODE– CH1 and CH2 INPUT are routed
to the Top Box and Subwoofer Processor’s IN1 and IN2
blocks. Alternately, if using a mono input, INPUT 3 is routed
to both Processor’s IN1 block. COMBINATION MODE.
Important Note! In Combination Mode, CH1
INPUT and INPUT 3 are connected in parallel
(see diagram, previous page. This is why it is
necessary to use CH1 and CH2 Inputs OR Input
3. If all three inputs are used while operating in Combina-
tion Mode, unpredictable results may occur.
DISCRETE MODE– CH1 and CH2 Inputs are routed to the
Top Box Processors only and are in no way connected to the
Subwoofer Processor. INPUT 3 is now routed to the
Subwoofer Processor IN1. Note, the Subwoofer Processor
IN2 block has no input signal connected when operating in
Discrete Mode.
INPUT 3- In Combination Mode, Input 3 is used for mono 3-
way input to both processors. In Discrete Mode, Input 3 is
used for the subwoofer only.
If you are using the DataPort connections for supplying audio to
the 215PCM, do not use the XLR inputs.
If you are using the XLR inputs for supplying audio to the
215PCM, do not use the DataPort connections to supply audio.
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CONNECTIONS- XLR Connection Recommendations and Pinouts
XLR Connections
The XLR inputs are electronically balanced. To maintain the benefits of balanced, pro-audio connections,
make all connections to the 215PCM using balanced, high-quality cable and connectors. If balanced inputs
are not available, use a unbalanced-to-balanced converter, such as a “DI” box or proper audio transformer.
Unbalanced connections are prone to noise and interference pickup as well as ground-loop induced hum. If
your system has signs of noise or hum, disconnect all inputs to verify the source of the noise. If the noise
disappears, the noise source is not the 215PCM, but the input device and interconnecting cables.
If the input cables are short and the venue location free of most electrical noise, unbalanced input
connections might be acceptable. It is not the preferred method, but it is sometimes necessary. No damage
will be done using unbalanced connections, just a reduction in audio quality and performance.
All store bought balanced professional audio XLR cables are properly wired for use with the 215PCM. In
cases where you may need to make or repair your own cable, the pinout (or connection locations) for
balanced and unbalanced XLR’s is provided, below.
Balanced XLR connections.
Unbalanced XLR connections.
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CONNECTIONS- Post Processor Outputs
Post Processor Outputs
Each processor has two post-processor outputs. They
are labeled CH1 OUTPUT and CH2 OUTPUT. The audio
present at these outputs is processed and the signal
is the same as at the OUT1 and OUT2 blocks in the
Signal Manager software. See Block Diagram, page
7, for details.
These are electronically balanced outputs with an
impedance of 600 ohms with the shield terminal
connected to the chassis. The outputs are suitable for
daisy chaining the post processor signal on to other
devices in the system. We recommend that no more
than five balanced, pro-audio devices be daisy
chained from any output.
The post processor outputs are recessed, located on the processor
faceplates. Each processor has post processor outputs suitable for
daisy chaining the processed audio on to other devices in your
system using detachable terminal block connectors.
The output connectors on the Processors are three pin
terminal block connectors. They are sometimes called
“Phoenix- or Euro-type” detachable terminal blocks.
The appendix provides part number information on
these connectors.
Top Box Processor- Both CH1 and CH2 OUTPUTs
are active for most applications. The signal output
from each connector is same as the signal applied to
the inputs of the top box amplifier.
Subwoofer Processor- Use CH1 OUTPUT only. CH1
OUTPUTs signal is the same signal applied to the
input if the subwoofer amplifier. CH2 OUTPUT is not
normally used.
NOTES: The output levels of each processor are
dependant on your settings in the Signal Manager
software when you configure the processor. If post
processor outputs do not behave as expected,
connect your host PC to the processor and verify your configu-
ration.
Subwoofer post-processor output is available for daisy chaining
from the CH1 OUTPUT receptacle. The Subwoofer Processor CH2
OUTPUT is not normally used.
QSC recommends the use of balanced audio connections
exclusively. We discourage the use of unbalanced connections
as they are more prone to common-mode noise pickup and
ground loop hum.
Unbalanced connection.
Balanced connection.
Terminal Block
Connector Pinouts
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CONNECTIONS- DataPort (QSControl users only)
DataPort Connections
The DataPort connections on the 215PCM allow integration
of the 215PCM into QSC networked audio control &
monitoring applications. If you are not connecting the
215PCM to a QSC-based, networked control &
monitoring system, do not use the DataPorts. If the
DataPorts are used only for control and monitoring of
amplifier functions and NOT audio input, then the XLRs may
be used for audio inputs. If audio inputs are active on both
the DataPort and XLR connections, they will be summed,
producing unexpected results.
The 215PCM will use two DataPort connections in a
QSControl system. The Top Box Processor connection will
“report” as a PL236 amplifier and the Subwoofer Processor
The DataPort for each processor is the 15-pin D-sub connec-
will “report” as a PL230 amplifier.
tor. Each processor has its own DataPort. To make the
connection, orient the plug correctly and push firmly into
place.
What is a DataPort?
The DataPort is a QSC-specific connection used for
interfacing amplifiers, amplifier monitoring devices and
signal processors. It is typically used in larger-sized
installations where amplifiers may be located far away from
system operators. The DataPort interconnects provide audio
inputs and amplifier operating data (temperatures, power
status, audio power level, etc....) to other QSC equipment,
such as the CM16a Amplifier Network Monitor. Managing
all this information and the operation of the amplifiers is
QSC’s” QSControl” software running on a PC. QSControl
primarily handles amplifier tasks, while another QSC
program, Signal Manager, handles Processor configuration.
The DataPorts (one on each of the two Processors) are HD-
15, D-sub, 15-pin connectors. Devices like QSC’s CM16a
provide all the necessary interconnects (audio inputs
included) to the 215PCM. For further information regarding
QSC’s DataPort products, contact your QSC representative
or visit our website.
After fully inserting the DataPort cable’s plug into connector,
finger-tighten the two retaining screws to maintain proper
electrical connection and ensure noise-free grounding contact.
When using the DataPort connections for audio inputs, do not use the XLR audio inputs. Any signals
present on both connections will be summed, producing unexpected results. It is OK to use the XLRs for
audio input if the DataPort connection is used only for control and monitoring.
Use only QSC Audio DataPort Cables for DataPort connections. They provide individually shielded audio pairs for
the best possible audio performance. Computer VGA cables are similar, but can degrade your audio quality. QSC
DataPort cables are available from QSC Technical Services Department.
If you are controlling amplifier Power Status with remote network applications (QSControl) be sure to leave the
215PCM’s AC power switch in the ON position. Place amplifiers in STANDBY mode using the amplifier network
control software. If the AC power switch is OFF, the amplifiers will be unable to respond to any commands.
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CONNECTIONS- Output to Top Boxes (Speakons™)
Output to Top Boxes
At the right side of the rear panel are the output
connections to the top box speakers. Note the color
coding scheme of the text labels for each Speakon
connector. The color coding corresponds with the
colors of the Mode Switch labels (Combination Mode
or Discrete Mode).
The upper Speakon is labeled MONO BIAMP OR CH1
and DISCRETE CH1 in two text colors indicating that
the function of the Speakon relies upon the position
of the Mode Selector Switch (see chart, below). The
upper Speakon has all four terminals wired and is
thus suitable for biamp use. Both CH1 and CH2
outputs are wired to the top Speakon. Do not use the
lower Speakon when using the upper Speakon for
biamp use.
To connect a Speakon, insert the keyed plug into the receptacle
and twist counterclockwise to lock in place.
The lower Speakon is labeled CH2 and DISCRETE CH2
in two different text colors indicating the same
functional reliance on the Mode Switch position. In
either Mode, this Speakon is wired to the Top Box
amplifier’s CH2 output. CH2’s output is also wired to
the upper Speakon’s 2+ and 2- terminals for biamp
applications. Do not use the lower speakon if using
the upper Speakon in biamp connection.
Each Speakon has a wiring chart (pinout) printed next
to it for easy reference. The pin numbers (1+, 1-, etc...)
correspond to the pin numbers marked on the
Speakon.
When the Speakon locks into place, an audible
“click” confirms connection.
Speakons provide a clean appearance, reliable electrical
connection and positive locking mechanism. To remove a
Speakon, pull the thumb-latch back and twist counterclockwise
1/8th turn.
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USE- Cooling Air Inlet and Exhaust Vents
Cooling Air Inlet and Exhaust Vents
Be certain not to obstruct or block the Cooling Air Vents in any way! Loss of
cooling air flow could result in the amplifiers going into thermal shutdown
(protective muting to help cool the amplifier and prevent damage). Keep the vents
free of dust and dirt buildup as airflow will be reduced.
Do not install near any heat sources such as radiators, heat registers, stoves, or
other apparatus that product heat.
Cooling air is pulled into the center air intake vent by
both amplifiers. The air is pulled through each amp and
exhausts from each end of the rear panel. The
temperature of the air exiting theses vents is a good
indicator of “how hard” the amplifier is working.
The 215PCM contains two forced-air cooled QSC
Powerlight 2-series amplifiers. They are mounted
within the back portion of the enclosure. The amplifi-
ers rely upon an unobstructed air flow in and out of
the respective vents, shown below. Keep these air
vents free of obstructions and dust buildup. Be certain
not to block the vents in applications where the
215PCM might be covered with textile curtains or
located close to walls.
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USE- AC Power Switch and LED Indicators
AC Power Switch
Above and to the right of the AC entry connector is the Power
switch. The switch is labeled POWER ON, above it.
To turn the power on: Press in on the upper portion of the
rocker switch. Both DSP-3’s blue Power indicators should
illuminate after a brief amplifier startup sequene.
To turn the power off: Press in on the bottom portion of the
rocker switch. It may take a few moments for the Power LED’s
to extinguish. This is normal.
Power switch.
LED Indicators
Each Processor has two LED indicators,
PWR and SIGNAL. The indicators are
located on the rear panel of the
215PCM.
PWR- When the 215PCM is connected
to a properly rated and working AC
supply circuit and is turned on, the blue
PWR LED on each of the Processors
will illuminate. When the system is
powered up correctly, two blue Power
LED’s will be visible; one on the Top
Box Processor and one on the Sub-
woofer processor.
SIGNAL- The SIGNAL LED indicates
input signal presence and strength. It is
dual brightness to give an indication of
input signal strength. The SIGNAL LED
will illuminate dimly at -40 dB. At -20
dB it will light brightly.
LED indicators.
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USE- LED Indicators (continued) and Important User Caution
LED Indicators (continued)
NOTE! If both PWR indicator LED’s fail to illuminate after turning the power to the 215PCM
on, verify the AC power is working and is properly connected. If this fails to correct the
problem, disconnect the DataPort connections (if any) and retry. If the PWR indicator
illuminates now, the DataPort was forcing the amplifier into Standby mode. Refer to
QSControl documentation for information regarding amplifier Standby power status.
If one Processor’s PWR indicator illuminates and the other’s does not, it is possible that one of the
amplifiers could have a problem. First, disconnect the DataPort connections (if any) and retry. If the
PWR indicator illuminates now, the DataPort was forcing the amplifier into Standby mode. Refer to
QSControl documentation for information regarding amplifier Standby power status. If the indicator
still fails to illuminate, have the 215PCM serviced by a qualified technician.
IMPORTANT USER CAUTION
The 215PCM has been equipped with a very powerful internal amplifier. The amplifier power is several
times greater than the long-term power capacity of the drivers. This allows the full capacity of the
speakers to be used without reaching the clipping point of the amplifier. The extra power is provided for
greater dynamic range and impact, but the drivers can be damaged by excessive long-term operating
levels. To avoid speaker damage as well as amplifier thermal muting, the user should observe the following
operating limits:
Average program power, 1-minute duration: 1500 watts (3dB below clipping point, 50% average power)
Average program power, 1-hour duration: 1000 watts (5dB below clipping point, 33% average power)
Average program power, 8 hours or more: 800 watts ( 6dB below clipping point, 25% average power).
These limits apply for speakers at normal operating temperatures. If the speakers have already been running at one
of the long-term limits, they will be at their full rated temperature, and should not be pushed to a higher short-term
power limit. When using a short-term operating limit, there must be a similar “rest” period between each run.
The speakers must be operated within their rated frequency range to avoid cone damage from overexcursion. If
there is audible distortion on certain notes, this must be noted as the maximum operating level, and average levels
must be regulated against this limit according to the figures shown above. Speakers operated at these maximum
limits will experience severe flexing stress, and should be inspected frequently for damage around the edge of the
cone, using a flashlight through the speaker grille.
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PROCESSOR USE- Software Installation and System Requirements
You must use the supplied software to design your configurations and then load those configurations
into the Processor using a simple RS-232 connection from your PC to the Processor.
Use the software’s Help System for instructions on how to use the Signal Manager software.
System Requirements
To use the QSC Signal Manager software, you need the following:
• IBM compatible computer, 200 mHz or greater Pentium processor
• Windows 98/2000 or Windows NT 4.0 with Service Pack 6a or later
• SVGA display at 800 x 600 minimum resolution, 1024 x 768 recommended
• CD-ROM drive
• 32 MB or more of RAM
• 10 MB of free hard disk space
• An available RS-232 serial communications port (COM port) capable of 38.4k baud
• A male-to-female 9-pin serial cable (to connect the DSP to available COM port)
Software Installation
Use the included Signal Manager software ONLY! Signal Manager version 4.21 is the only qualified Signal
Manager for use with the 215PCM Processors. Use of other versions may cause unpredictable results.
Do not install multiple versions of Signal Manager on your PC. If multiple versions are installed on the same
PC (regardless of what directory they are placed) the saved configurations will become unusable or behave
unpredictably.
1. Insert the QSC Signal Manager CD into your drive (typically drive “D:”). If your computer has AUTORUN enabled, the installation
will start automatically after several seconds. If it does not, then proceed to step 2, below. Otherwise, skip to step 3.
2. Select Run from the Windows START menu. In the blank space, type “D:\setup.exe”. Press “OK”.
3. Follow the on-screen installation instructions.
4. After Signal Manager has finished installing, a “readme” file will automatically be displayed (by default). Please take the time to
read this important information. It contains the most recent information about using the software and related issues.
5. To run the application, double-click the QSC Signal Manager icon that was placed on your desktop during install or select
“Programs, QSC Signal Manager, Signal Manager” from the Start menu.
6. Refer to Signal Manager’s on-screen help system for detailed instructions on creating configurations and general use information.
7. IMPORTANT! The Processors are shipped with all of their presets configured to pass full-range audio signals through both
channels. THIS MAY NOT BE APPROPRIATE FOR YOUR SETUP! Be sure to configure any necessary crossovers , filters,
etc. prior to applying audio signals to the inputs. Damage to equipment may result if these recommendations are not
followed.
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PROCESSOR USE: General Guidelines and Preset Description
IMPORTANT! Please read before operating this Digital Signal Processor with your audio system.
General Use Guidelines for Freely-Configurable DSP
As a general rule, DO NOT CREATE SIGNAL LOOPS! Do not
mix the output of a DSP object back into its own input!
There is nothing useful to achieve by doing this, you will
only create an oscillator that could damage your speakers.
Also, USE THE SINE AND NOISE GENERATOR OBJECTS
WITH GREAT CAUTION! These functions produce signals
that can harm your speakers. Start with lowered gain
settings. If you don’t hear a signal when you think you
should, DO NOT INCREASE THE GAIN!!! If the signal isn’t
audible at lower levels, there is something else wrong.
Turning up the gain to full exposes you and your system to
the possibility that some loose connection somewhere will
suddenly send a full-amplitude signal through your sound
system.
This is a professional level DSP product that allows the user
to produce virtually unlimited signal processor variations
and configurations. Because of the infinite configuration
possibilities of digital signal processing, it is possible to
create configurations that may result in unwanted signals
or uncontrollable output.
The Signal Manager software has no way of knowing if the
DSP configuration you have designed will produce the
results you intend. You can create signal loops in a
configuration that may oscillate and damage your sound
system if applied to the unit. When applying an untested
configuration or when designing or experimenting with this
unit, it is a very good idea to turn down the amplifier’s
physical gain controls. That way, you won’t damage your
speakers or create very loud sounds if you apply a configu-
ration that doesn’t do what you thought it would.
Like all freely configurable signal processing tools, this DSP
will do what the configuration your design tells it to do,
which may not be what you expect it to do, so use caution.
Factory Presets
NOTE! The factory setting for all eight Preset memories is wire-
through. Signals are passed from input to output without any
processing. Each Processor must be configured as desired by
the user. You may select configurations from the sample files
(*.cfg) within Signal Manager or create your own.
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Processor Use: Saving Presets Using QSC’s Signal Manager software
Presets
Each Processor must be loaded with your desired signal processing configu-
ration using the Signal Manager program before use. Test all new configura-
tions for expected behavior at low power levels to avoid inadvertently
damaging speaker systems.
Each Processor has eight Preset memories numbered 1 through 8. Presets are DSP configurations
saved to memory in the Processor. Only one preset may be active at one time. The possible configura-
tions of the presets are essentially limitless. You will need to configure the preset memories with
signal chains that meet the precise requirements of your sound system using QSC’s Signal
Manager software. For help creating configurations, refer to the software’s on-line Help
system for detailed information.
Configuring the Processors
The DSP configurations created with the Signal Manager software are not usable until they are applied
or saved as a Preset to the Processor. The software includes a collection of various sample configura-
tions for your use. Modify and save them as your own configurations if they prove useful in your applica-
tions. You may also create your own to precisely fit your audio system. Once a configuration has been
created and saved, it may be loaded (or applied) into a processor.
How to Save Configurations into a Processor’s Preset
1- Connect the Processor to the PC using a 9-pin serial cable.
2- Turn the 215PCM on using the AC Power Switch located near the Power Cord Entry on the
rear panel.
3- Start your PC and Run the Signal Manager program. The current configuration that is run-
ning in the DSP will be displayed on the Signal Manager workspace.
4- You may now create a new configuration (or modify the existing one) to be saved as a DSP
preset. To create a new configuration, select Configuration/New from the menu bar. This will
clear the workspace and activate the DSP tools and filter icons. If a configuration already
exists in the computer, choose the Configuration/Open menu item and select the desired con-
figuration from the Open window. Note that in each of these cases, the Configuration Pane at
the bottom of the workspace changes from reading ‘ACTIVE’ to ‘EDIT.’
5- After creating (or editing) your configuration and making the necessary parameter changes,
select Configuration/Save DSP Preset from the menu bar. Then choose the Preset Identifica-
tion Number that you wish to program. Press the OK button.
6- Once the DSP is programmed with the configuration, the text banner at the top of the
workspace will reflect the selected Preset Identification Number.
NOTE! When programming presets into the Processors, be sure that the preset selected is
the one you wish to overwrite. Once the configuration is applied to the Processor, the se-
lected preset’s previous information is overwritten.
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Processor Use: Configuring the Processors (Discrete 2.1)
NOTE! The factory setting for all eight Preset memories is wire-through. Signals are
passed from input to output without any processing. Each Processor must be config-
ured as desired by the user. You may select configurations from the sample files
(*.cfg) within Signal Manager or create your own.
How the Processors are configured is dependant on the system setup and desired results. For example, a
discrete 2.1 system requires a different signal chain than a mono 3-way stack. Decide how your system will
be set up before starting to configure the Processors. The following are examples only. They are to be used
to help understand the basic procedure for using the 215PCM in most circumstances.
Example 1- Discrete 2.1
Discrete 2.1 uses 3 channels of audio. The 2 main channels are typically referred to as “left” and “right” and
are full-range program material. These channels are driven by the 215PCM Top Box Outputs. The Subwoofer is
the third channel and its input is supplied by a separate track or channel. The Mode Switch should be set to
Discrete and all three inputs will be used. An example of a signal chain that might be used for the Top Box
Processor in this situation is:
The settings for the various high-pass filters and equalization will be a function of the speakers being driven, the
type of crossover desired (interaction with Sub), and desired results. The high-pass filter is usually used to remove
low-frequency content from the Top Boxes. This can be done simply to protect the speakers from cone overexcur-
sion or to remove overlap between the Subwoofer and Top Box responses.
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Processor Use: Configuring the Processors (Discrete 2.1 continued)
Example 1- Discrete 2.1 (continued)
The Subwoofer Processor is next. In Discrete Mode, the Subwoofer Processor’s input signal comes from the
Input 3 XLR. Input 3 is routed to the Subwoofer Processor’s IN1 block (see example, below). The IN2 block is
not placed when operating in Discrete Mode. An example of a typical Subwoofer configuration might look
something like this:
This configuration has a high- and low-pass filter that limit the overall frequency response and equalization to
compensate for enclosure and room responses. The low-pass filter is usually tuned to remove any overlap in
frequency response of Subwoofer and Top Boxes.
Discrete 2.1 Checklist:
1- Configure Top Box Processor.
2- Configure Subwoofer Processor.
3- Set Mode Switch to Discrete.
4- Connect the two main channel inputs to CH1 Input and CH2 Input XLRs.
5- Connect the subwoofer channel input to the Input 3 XLR.
6- Test and adjust as required.
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Processor Use: Configuring the Processors (3-way Mono Stack)
Example 2- Active 3-way Mono Stack
In a 3-way configuration, the Top Box amplifier’s two channels are used for low- and high-frequencies and the
subwoofer handles bass. The Processors perform the required crossover and time delay functions.
This Top Box configuration has time delays included in the DSP chain to align the impulse response of the audio.
The upper signal chain is tuned for a 100 to 1200 hertz pass band and the EQ block compensates for any driver/
cabinet resonances. The lower signal chain is tuned for 1200 hertz and higher with back-to-back high-pass filters
and EQ for any required compensation.
The Subwoofer Processor would be configured similarly to the example on the previous page. Normally, the Top
and Sub processors receive the full range signal and extract their respective frequency ranges.
3-way Mono Stack Checklist: There are two ways to handle the signal routing for this application. In Discrete Mode, two input
cables are required, but if you have the option of controlling input signal levels of each, the overall subwoofer level can easily be
adjusted on the fly. In Combination Mode, only one input cable is required since the Top Box Processor’s CH1 Input is also connected to
the Subwoofer Processor (IN1 block). Any changes to input signal level will now effect both the MF/LF and subwoofer channels.
Changing subwoofer gain requires Signal Manager and a computer. Bass level should be managed with EQ.
Discrete Mode (optional)
Combo Mode (preferred)
1- Configure Top Box Processor.
2- Configure Subwoofer Processor.
3- Set Mode Switch to Discrete.
4- Connect the input to CH1 Input XLR.
5- Connect the input to the Input 3 XLR.
6- Test and adjust as required.
1- Configure Top Box Processor.
2- Configure Subwoofer Processor.
3- Set Mode Switch to Combination.
4- Connect the input to CH3 Input XLR.
5- Test and adjust as required.
OR
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TROUBLESHOOTING
The 215PCM won’t turn on when the Power switch is operated-
• Verify AC power source is providing required voltage.
• Check each end of the power cord. The twist-lock connectors need to be fully inserted and twist-locked into place.
• If using the DataPort inputs and QSC amplifier network control applications, the amplifier could be in STANDBY
mode. Check with the system operator to place the amplifiers in POWER ON mode. If required, you can check this by
temporarily disconnecting the DataPort cables to each Processor; if the 215PCM powers up, then the amplifier network
control was forcing the amps to be in STANDBY mode.
• Inspect the AC power cord for damage. Unplug from the AC power source and then carefully inspect the cord for
damage. Replace if any damage is detected.
The 215PCM “cuts-out” when I really crank it up (intermittent operation)-
• Make sure the AC power source is rated for 120V, 30 Amps. Do not use 20 or 15 Amp AC supply circuits for the
215PCM! Use only 12 or 10 gauge heavy-duty extension cords.
• If the AC power source is “sagging” (or drooping) under heavy load, the circuit is overloaded or has other fundamen-
tal problems. Use another circuit or have the circuit checked by a licensed, professional electrician.
• Do not use multiple 215PCM’s from the same AC power circuit branch. Momentary, peak current from the AC line
can easily exceed 50 Amps per 215PCM. While this is well within the limits of 30 Amp (continuous) circuits, additional
215PCM’s could overload one circuit branch. Always consult a licenced, professional electrician for verification of
proper AC power distribution in high-power systems.
Can I use some sort of adapter on the power cord so that I can use “regular” outlets?-
• QSC Audio Products strongly discourages ANY changes in the AC power connections. Use only NEMA L5-30,
120V, 30 Ampere twist-lock connectors. All supply circuits and AC power receptacles should be rated for 120 V., 30
Amp service.
• Unreliable and potentially dangerous conditions could result from using this product with improperly rated AC
supply circuits. Always consult a licensed, professional electrician for verification of proper AC power distribution in
high-power systems.
• In emergencies, 15A adaptors can be used if full operating levels are avoided.
How can I adjust the gain settings on the amplifiers? Any recommended tool for the job?-
• See page 10 for details.
• Two recommended tools: Excelite #R186 (metal, 6” blade screwdriver) or GC Electronics #8988 (fiberglass, 12”
blade adjustment tool).
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TROUBLESHOOTING
Unable to “talk” to processor from Signal Manager software (OFFLINE status indicated)-
• Check that the serial cable is a normal serial
data cable. Null-modem type cables will not
work.
COM Port setting
(COM1 - COM4) must
be the same as the
COM port number your
are using to connect
the serial cable from
the 215PCM’s proces-
sors
• Make sure that the serial cable is properly
connected on both ends and that the retaining
screws are snug (finger tight).
• Verify AC power to the 215PCM is ON and the
POWER LEDs on the Processors are illuminated.
• Check that the COM Port (COM1, COM2, etc...)
you are using on your PC and the software’s
Options/DSP menu COM Port setting are the
same. See example of Options/DSP settings,
below.
I’m using both my COM Ports and two serial cables to connect to the 215PCM. Every time I try to switch COM
Port setting in the Options/DSP menu, Signal Manger confuses my Presets-
• If you want to connect to both Processors on the 215PCM using RS-232 and two COM Ports from your PC, the
following procedure must be followed:
1- Configure the DSP currently active in Signal Manager (could be the one on COM1 or COM2, etc...).
2- Apply you configuration and save it.
3- Select Tools/Options from the menu and click the DSP tab. Select the COM Port you want to use next.
4- Close the Signal Manger program.
5- Start the Signal Manager program; it will build a new configuration database.
6- Continue as usual.
- Remember, all you need to do is switch the COM Port setting and then restart Signal Manager.
• Consider upgrading to QSC’s amplifier network products. With QSControl, the Processor’s DSP is set up using
the DataPort connections. No RS-232 connections are required and amplifier operating status can be monitored
and logged.
The audio time alignment isn’t right-
• Each Processor adds 1.00 milliseconds of delay. This is “throughput” delay and can not be changed.
• Check your configurations for Limiter and Compressor objects that have Predictive Delay enabled. Predictive delay
can add significant delay and must be accounted for in order to achieve proper system time-alignment. See software
Help system for detailed information regarding Predictive Delay.
• Check your configurations for any Delay objects that may have been set to undesired delay values.
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TROUBLESHOOTING
My Inputs are hooked up to the 215PCM, and the Top Boxes sound great. But, the subwoofer doesn’t seem to
be working-
• Check the MODE SWITCH position. In COMBINATION MODE, inputs for CH1 and CH2 are summed and routed
to the Subwoofer Processor. If set to DISCRETE MODE, the Subwoofer Processor is disconnected from CH1 and
CH2 inputs, and connected to INPUT 3. And if Input 3 has no input signal connected to it, then the Subwoofer
will have no signal.
• If operating in DISCRETE MODE, make sure the Subwoofer input signal is connected to Input 3.
• Verify the Processor configuration loaded in the Subwoofer Processor is as desired.
I am using the 215PCM setup for biamp operation, but my mid- and high-frequency sound seems to be gone-
• Make sure the Mode Switch is in the correct position for your intended application.
• Be sure you are using only the upper Speakon for 4-wire biamp connection.
• If using 2-wire Speakon cables to connect to your biamp cabinet, use the upper Speakon for HF and the
lower Speakon for MF.
• Verify the Processor configuration loaded in the Top Box Processor is as desired.
I’m trying to biamp two separate top boxes and it doesn’t seem to be working-
• There are only two channels of amplification available to the Top Boxes. You can not run two biamp devices,
as this would require four channels of amplification. The 215PCM supports two channels of amplification for
Top Boxes.
• QSC 8 ohm top boxes have dual-, feed-through Speakons that allow 1 or 2 additional top boxes to be daisy-
chained.
I used my 215PCM with another PC that had a later version of Signal Manager running on it. Now my other PC
(with the older Signal Manager version) won’t recognize my configurations-
• When a configuration is opened by a newer version of Signal Manager software than the one used to
create it, the configuration is “updated” to be compatible with the newer version.
• You will have to keep the version of the Signal Manager software the same for all PC’s used to configure
the 215PCM. This will ensure reliable, predictable results when using multiple PCs to configure the
Processors.
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Specifications- ISIS 215SB
Dimensions
SPECIFICATIONS SUBJECT TO CHANGE WITHOUT NOTICE
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Specifications- ISIS 215SB Acoustic Performance
SPECIFICATIONS SUBJECT TO CHANGE WITHOUT NOTICE
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Specifications- ISIS 215SB
215SB Specifications
Frequency Range
Recommended Bandpass:
Frequency Response:
35- 150 Hz ( 3 dB)
36- 360 Hz (-3dB)
Usable Frequency Range:
29- 440 Hz (-10 dB)
Maximum Output
Calculated Peak Output1:
Measured Continuous Output2:
Continuous Noise Exposure Level3:
141 dB SPL
131 dB SPL
122 dBA
Impedance:
4 ohms (nom.) 3.7 ohms (min.) 23.3 ohms (max.)
Power Handling4:
1300 W RMS, 2 hours (AES)
1000 W RMS, 8 hours (IEC)
800 W RMS, 100 hours (IEC)
Sensitivity:
101 dB half-space, 95 dB full space, 35- 100 Hz, 1 W, 1 m
Neutrik NL4MP
Connector:
Wiring of Connector:
Standard Bridge Mono Wiring.
Pin 1+ = Positive Input Signal
Pin 1– = Negative Input Signal
Nominal Coverage:
Transducers:
Omnidirectional (100 Hz).
Two 15-inch (394 mm) high efficiency subwoofer drivers.
4-inch (100 mm) voice coil, copper on fiberglass former.
High excursion, multi-vented voice coil design.
Enclosure Type:
High efficiency horn-ported box hybrid, tuned to 35 Hz.
Material: Composilite cored construction.
Dimensions:
Weight:
40” W x 26” H x 25” D., nominal (102 x 66 x 64 mm). Refer to drawing for details.
175 pounds (79.4 kg)
Features:
Weather-resistant enclosure
Durable rubber anti-skid feet on two sides of cabinet
Pole Cups:
Three 2-inch diameter, 6-inch deep, aluminum. Refer to drawing.
Four 16-inch “L-track” rails at corners. Refer to drawing.
Flying Points:
Notes:
1- Calculated maximum peak SPL at 1 meter distance, half-space, speaker operating at rated RMS power with 6 dB crest factor pink noise
input, 35- 100 Hertz.
2- Measured maximum RMS SPL referenced to 1 meter distance, loudspeaker operating at rated RMS power with 6 dB crest factor pink
noise input, 35- 100 Hertz. Measurement taken at 2 meters, half-space, after 15 minutes of full power operation.
3- Maximum continuous SPL at 1 meter in dBA. The dBA scale is typically used to identify sound sources which have the potential to cause
permanent hearing loss.
4- Maximum input power tested in accordance with AES and/or IEC recommendations, 35- 100 Hertz band limiting, 6 dB signal crest factor.
SPECIFICATIONS SUBJECT TO CHANGE WITHOUT NOTICE
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Specifications- ISIS 215PCM
Self-Powered Dimensions
SPECIFICATIONS SUBJECT TO CHANGE WITHOUT NOTICE
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Specifications- ISIS 215PCM
215PCM System Specification
Description
215 PCM: Comprised of the 215SB Subwoofer Cabinet with a “backpack” containing two QSC
DSP-3 24-bit Signal Processors, 1 ruggedized QSC PL230 3000 Watt amplifier and 1 ruggedized QSC
PL236 3600 Watt amplifier. All interconnections for the audio signals and AC power are complete inside
the backpack. Apply AC power, program the Signal Processors, connect the audio inputs, and plug in
the Top Box speakers.
NOTE!- Regular production PL230 and 236 amplifiers are not recommended replacements for the
amplifiers in your 215PCM.
On-board Power
Subwoofer: One ruggedized QSC PL230 amplifier in bridge mode, 3000 Watts at 4 ohms
Top Boxes: One ruggedized QSC PL236 amplifier, 2-Ch.’s, 1300 Watts per Ch. at 4 ohms/Ch.
On-board Processing
Connectors
Two QSC DSP-3 24-bit, 48 kHz Digital Signal Processors. (One Processor per amplifier)
AC Power- NEMA L5-30 receptacle
CH1/CH2 Input- female XLR, Input 3 (Mono)- female XLR. See Processor spec., p.37, for impedances
Parallel Out (Mono)- male XLR wire directly in parallel with Input 3 connector
Output to Top Boxes- two Speakon NL4MP receptacles.
CH1 wired for 4-wire biamp use
CH2 wired for 2-wire normal use
Both Processors feature :
Post-Processor audio outs (3-wire, detachable terminal block connectors), one for each channel.
RS-232 port for Processor Configuration using PC/laptop and QSC Signal Manager software.
DataPort ties to QSControl systems to support network Processor configuration.
Controls
AC Power switch and MODE switch (Combination Mode/Discrete Mode)
Operating Modes
Combination Mode- Use only CH1 and CH2 Inputs. Inputs are wired to both the Subwoofer Processor
and the Top Box Processor inputs. Refer to the block diagram for detailed information.
Discrete Mode- Use all three inputs. Top Box Processor inputs are from CH1 and CH2 Input connectors
Subwoofer Processor input is from Input 3 connector. Input is connected ONLY to Processor Input 1.
Signal Routing
Signal Routing is dependant on MODE Switch position and Processor configuration. Refer to the block
diagram for detailed information.
Other Features
Built-in heavy-duty casters and handles
Composilite™ cored construction
230 pounds (104.3 kg)
Enclosure Material
Weight of 215PCM Powered Control Module
Overall Dimensions of 215PCM Powered Control Module 40” W x 26” H x 30” D., nominal (102 x 66 x 76 mm). Refer to drawing for details.
Power Requirements
120 VAC, 50/60 Hz, NEMA L5-30 connector (230 V. model available)
Current Consumption @ 120 VAC, typical, pink noise
Idle
2A
Subwoofer 1/8 power, Top Box idle
11A
19A
23A
28 A
Subwoofer 1/8 power, Top Box 1/8 power 8 ohms each channel
Subwoofer 1/8 power, Top Box 1/8 power 4 ohms each channel
Subwoofer 1/8 power, Top Box 1/8 power 2 ohms each channel
NOTE: 1/8 power is representative of current draw with typical music program material with occasional clipping.
SPECIFICATIONS SUBJECT TO CHANGE WITHOUT NOTICE
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Specifications- ISIS 215PCM Amplifiers
Amplifier Specifications
Output Power in watts
Subwoofer Amplifier (PL230 type)
Top Box Amplifier (PL236 type)
FTC:
4 Ohms, 1 kHz, 1% THD
3000 Watts
8 Ohms per channel (20- 20 kHz., 0.03% THD)
4 Ohms per channel (20- 20 kHz., 0.05% THD)
725 Watts
1100 Watts
EIA: 1 kHz @ 1% THD
8 Ohms per channel
4 Ohms per channel
2 Ohms per channel
800 Watts
1300 Watts
1850 Watts
Distortion (both amplifiers)
SMPTE-IM
Less than 0.01%
<0.015%
Typical, 10 dB below rated power, 20-20 kHz
Typical, full rated power, 5 kHz.
<0.01%
Frequency Response (both amplifiers, without processors, at 10 dB below rated output power)
20 Hz to 20 kHz, 0.2 dB, -3 dB points: 8 Hz and 100 kHz
Greater than 500
Damping Factor (both amplifiers)
Controls
Ch. 1 and Ch. 2 gain knobs accessible via adjustment opening in the cabinet.
Continuously variable speed fans, one intake vent, two exhaust vents.
Cooling
Amplifier Protection (both amps)
Full short circuit, open circuit, thermal, ultrasonic, and RF protection
Stable into reactive or mismatched loads
Load Protection (both amps)
Turn-on/turn-off muting, DC-fault power supply shutdown, clip limiting
2-step Class-H
Output Circuit Type (both amps)
SPECIFICATIONS SUBJECT TO CHANGE WITHOUT NOTICE
36
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Specifications- ISIS 215PCM Processors
Digital Signal Processor Specifications
Type
Freely configurable, custom DSP with software for PC. Computer connection needed only for set up.
Signal Processing
Two QSC DSP-3 Processors, 24 bit, 48 kHz., one for each amplifier
20 Hz– 10 kHz 0.3 dB (XLR inputs on 215PCM rear panel)
20 Hz– 20 kHz 0.7 dB (XLR inputs on 215PCM rear panel)
20 Hz– 20 kHz 0.2 dB (if using DataPort input on Processors)
<0.01% THD+N @ +4 dBu out
Frequency response at 3 dB below full scale input voltage
Distortion
Delay (throughput)
Dynamic range
1.00 millisecond
>93 dB unweighted, 20 Hz– 20 kHz, 1.5V, 4V and 9V sensitivity
>88dB unweighted, 20 Hz– 20 kHz, 18V sensitivity
Polarity
In-phase or inverted
Mute
>90 dB attenuation
Input Connector type
Type
True-Cannon XLR connectors mounted on 215PCM rear panel
Electronically balanced
Grounding
All shield terminals connected to chassis
1.5, 4.0, 9.0 or 18.0 Vrms, (Units are selectable in software interface)
6, 14.5, 21.5 or 27.5 dBu
Input sensitivity, full scale
3.5, 12.0, 19.0, 25.0 dBv
Input Impedance
Discrete Mode- 8.3 k ohm balanced, 3.7 k ohm unbalanced
Combination Mode- 4.15 k ohm balanced, 1.85 k ohm unbalanced
>50 dB, 20 Hz– 20 kHz
Common-mode rejection
Crosstalk
>75 dB separation, 20 Hz– 20 kHz
Outputs
Program outputs hard wired to amplifiers
Three- 2 (Top Box), 1 (Subwoofer, CH2 output not used)
Electronically balanced detachable terminal blocks
Shield terminal connected to chassis
Post-DSP auxillary outputs
Type
Grounding
Post-DSP auxillary output level, full scale
Output impedance
6.0 or 4.0 Vrms; 18.0 or 14.5 dBu; 15.5 or 12.0 dBv (Units are selectable in software interface)
600 ohms balanced
QSC System Manager Connectivity (applicable only to users employing QSC System Manager)
System Interface Compatibility
Cable
QSC DataPort amplifier network monitors
QSC DPC-X DataPort cable, male-male (various lengths are available , contact QSC’s Technical
Services Department)
DataPorts Used
2 (1 per Processor)
Amplifier status monitor features
Clip indicator
Senses channel clipping
Protect indicator
Senses amplifier protect status
Reports standby/operate mode
AC Power Status
RS-232 Ports (used for configuring each Processor’s DSP chain)
Number of ports
Cable Type
Two (one for each processor)
Normal 9-pin serial cable, male-to-female
25 feet (7.6 meters)
Maximum Length
Communication Settings
Automatic (unless other software using port)
DSP Capabilities (freely configurable DSP “blocks”, use as many of any block until DSP “resources” are consumed)
High-Pass Filter
Polarity
Low-Pass Filter
Parametric EQ
High-Shelf Filter
Level Meter
Low-Shelf Filter
2 to 1 Mixer
Limiter
Compressor
Mute
Delay
Fader
1 to 2 Splitter
Pink & White Noise Source
Variable Frequency Tone Source
Clip & Protect Indication available if operating the DSP real-time from PC
External Contact Closure Sensing (pin #9 of RS-232, operates with ”Switched Gain” objects in Signal Manager software)
Note: Specifications are subject to change without notice.
37
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APPENDIX- Contact Closure Wiring Details
Contact Closure Feature
The contact closure feature is used to trigger gain changes
in the DSP. Any configuration that uses one or more
switched gain objects (see Signal Manager software Help
file ) can take advantage of this feature. The contact
closure will trigger all switched gain objects at once.
All switched gain objects in a DSP configu-
ration will be triggered by the one contact
closure. It is not possible to trigger
switched gain objects individually!
Wiring Diagram for Contact Closure
This feature requires the construction of a simple RS-232
cable (or through-adapter plug) that brings out pins 5
(GND) and 9 (contact closure trigger). These pins may be
connected to a simple toggle or push-button switch that
will be used to trigger a switched gain object in a DSP
configuration. Refer to Signal Manager software Help file
for available contact closure features.
38
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APPENDIX- RS-232 Pinout and Pin #9 Usage Note
RS-232 Pinout:
The diagram below shows the pin assignments for the female RS-232 connector on the DSP-3 Processors featured in the
215PCM.
Pin
Signal Description
1
2
3
4
5
6
7
8
9
DCD
TD
RD
DTR
GND
DSR
RTS
CTS
Contact Closure
*Note! Pin 9 is used for contact closure input. This pin is not normally used by
RS-232 devices. Some laptop and desktop computer COM ports have been
observed to “pull” pin 9 to ground; this will cause unexpected behavior of the
contact closure function if pin 9 is not disconnected on the PC end of the cable.
If this behavior is observed, make sure that pin 9 is disconnected on the PC end
of the cable.
39
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WARRANTY INFORMATION & HOW TO CONTACT QSC
(USA only; other countries, see your dealer or distributor)
WARRANTY
Disclaimer
QSC Audio Products, Inc. is not liable for any damage to amplifiers, or any other equipment that is caused by negligence or
improper installation and/or use of this speaker product.
Product Warranty
QSC Audio Products, Inc. (“QSC”) guarantees its products to be free from defective material and / or workmanship for a period of
three (3) years from date of sale, and will replace defective parts and repair malfunctioning products under this warranty when the
defect occurs under normal installation and use - provided the unit is returned to our factory or one of our authorized service
stations via pre-paid transportation with a copy of proof of purchase (i.e., sales receipt). This warranty provides that the examina-
tion of the return product must indicate, in our judgment, a manufacturing defect. This warranty does not extend to any product
which has been subjected to misuse, neglect, accident, improper installation, or where the date code has been removed or
defaced. QSC shall not be liable for incidental and/or consequential damages. This warranty gives you specific legal rights, and
you may also have other rights which vary from state to state. This limited warranty is freely transferable during the term of the
warranty period.
HOW TO CONTACT QSC AUDIO PRODUCTS
Mailing address / Adresse postale / Postanschrift / Dirección postal:
QSC Audio Products, Inc.
1675 MacArthur Boulevard
Costa Mesa, CA 92626-1468 USA
Telephone Numbers / Numéros de téléphone / Telefonnummern / Números de teléfono:
Main Number / Numéro principal / Hauptnummer / Número principal
+(714) 754-6175
+(714) 957-7100
Sales Direct Line / Ligne directe ventes / Verkauf-Direkt / Línea directo ventas
Sales & Marketing / Ventes & marketing / Verkauf u. Marketing / Ventas y marketing
(800) 854-4079
(toll-free in U.S.A. only)
(sans frais aux É-U seulement)
(zollfrei nur beim USA)
(sin costo en EE. UU. solamente)
Customer Service / Service à la clientèle / Kundendienst / Servicio a la clientela
+(714) 957-7150
(800) 772-2834
(toll-free in U.S.A. only)
(sans frais aux É-U seulement)
(zollfrei nur beim USA)
(sin costo en EE. UU. solamente)
Facsimile Numbers / Numéros de télécopieur / Telefaxnummern / Número de FAX:
Sales & Marketing FAX / Télécopie ventes & marketing / Telefax der Verkauf u. Marketing / FAX ventas y marketing
+(714) 754-6174
Customer Service FAX / Télécopie service à la clientèle / Kundendienst-Telefax / FAX servicio a la clientela
+(714) 754-6173
World Wide Web:
E-mail:
40
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QSC Audio Products, Inc. 1675 MacArthur Boulevard Costa Mesa, California 92626 USA
“QSC” and the QSC logo are registered with the U.S. Patent and Trademark Office.
©2001 QSC Audio Products, Inc.
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