Bogen Stereo Amplifier WV250 User Manual

Wall-Mount Power Vector Amplifiers  
WV100, WV150, & WV250 Models  
Installation and Use Manual  
© 2002 Bogen Communications, Inc.  
All rights reserved.  
Specifications subject to change without notice.  
54-2086-01B 0304 Printed in Korea.  
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Contents  
Page  
PANEL DESCRIPTIONS..................................................................................................2-3  
Wall-Mount PowerVector Front Panel ..........................................................................................2  
Wall-Mount PowerVector Module Bay (Rear) ............................................................................3  
Wall-Mount PowerVector Connector Board (Rear)..................................................................3  
INSTALLATION ..................................................................................................................4  
Package Contents................................................................................................................................4  
Mounting................................................................................................................................................4  
Front Panel Input Connector............................................................................................................4  
MODULES ............................................................................................................................5  
Module Installation..............................................................................................................................5  
Output Modules ..................................................................................................................................5  
Functionality....................................................................................................................................5  
Input Modules ......................................................................................................................................5  
Functionality....................................................................................................................................5  
Priorities ..........................................................................................................................................5  
CONNECTIONS ..............................................................................................................6-7  
Speakers ................................................................................................................................................6  
Transformer-Coupled Speaker Connections ................................................................................6  
4-Ohm Low-Impedance Speaker Connections............................................................................6  
COM and GNDTerminals ............................................................................................................7  
RemoteVolume Control....................................................................................................................7  
Master Mute..........................................................................................................................................7  
OPERATION ....................................................................................................................8-9  
Front Panel Controls & Indicators ..................................................................................................8  
InputVolume Controls....................................................................................................................8  
Signal / Clip Indicator ....................................................................................................................8  
Base andTreble Controls ..............................................................................................................8  
MasterVolume Control ..................................................................................................................8  
Average / Peak Switch & LED Output Meter ............................................................................8  
Power Switch / Power Indicator....................................................................................................8  
Output Limiter................................................................................................................................9  
Rear Panel Controls............................................................................................................................9  
Load Selector Switch......................................................................................................................9  
Other Controls....................................................................................................................................9  
Tone Control Bypass Switch..........................................................................................................9  
Low-Cut Switch ..............................................................................................................................9  
BLOCK DIAGRAM ............................................................................................................10  
SPECIFICATIONS ............................................................................................................11  
TROUBLESHOOTING ....................................................................................................12  
WARRANTY ......................................................................................................................13  
ACCESSORIES/COMPONENTS ....................................................................................13  
1
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Panel Descriptions  
Wall-Mount Power Vector Front Panel  
PUSH  
2
1
3
1. InputVolume Control  
Each of the 8 module bays are controlled by an independent volume control.  
2. Signal / Clip Indicator  
A single two-color LED located above each channel’s volume control indicates the audio activity of that chan-  
nel’s input. Green indicates signal active at the input; red indicates clipping of the input signal.  
3. Panel Input Connector  
A combination XLR female and 1/4" stereo phone jack connector provides a panel-mounted input.Parts includ-  
ed, but comes uninstalled.  
4. Output Limiter Control with Indicator  
Control determines maximum amp output level before limiting takes place. Indicator illuminates when limiting  
takes place.  
5.Average / Peak Switch  
This switch determines whether the LED Output Meter registers the average or peak level of the amplifier’s  
output.  
6. LED Output Level Meter  
An 11-segment LED output level meter monitors the output level of the power amplifier.  
7.Tape Out  
RCA unbalanced signal level output post bass, treble, and master controls.  
8. Bass Control  
Controls the amount of cut or boost of bass frequencies below 100 Hz.  
9.Treble Control  
Controls the amount of cut or boost of treble frequencies above 10 kHz.  
10. MasterVolume Control  
Controls overall level of mixed input signals.  
11. Power Switch  
Controls AC power to the amplifier. Illuminates when ON.  
2
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Panel Descriptions  
Wall-Mount Power Vector Module Bay (Rear)  
1. Module Bays  
The amplifier has eight module bays, all of which can accommodate input modules, with two bays (bays 7  
and 8) that can accommodate either input or output modules.  
2. Low-Cut Switch  
Slide switch (located in module bay 6) allows roll off of frequencies below 125 Hz.  
3.Tone Control Bypass Switch  
Slide switch (located in module bay 6) allows the effects of the Bass and Treble controls to be bypassed.  
Wall-Mount Power Vector Connector Board (Rear)  
1.Trans Output / Direct Out Selector  
Allows selection of either transformer-coupled outputs (70V, 25V, and 8-ohm) or a direct low-impedance  
(4-ohm minimum) output.  
2. Speaker Output Barrier Strip  
A terminal barrier strip, with clamping washers, provides connections for speaker loads.  
3. Master MuteTerminals  
These two terminals, when shorted together, mute the output from all modules installed regardless of their  
priority settings.  
4. RemoteVolume ControlTerminals  
Three terminals are provided for connection of an RVCP remote volume control panel to control the amplifi-  
er’s motorized MasterVolume Control.  
3
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Installation  
Package Contents  
• Amplifier  
• 2 Cables  
• Instruction Manual  
• 2 Screws (M 3 x 8)  
• Combined XLR receptacle and phone jack  
• 6 Screws (M 4 x 8)  
Mounting  
A surface-mount (model BBS) or flush-mount (model BBF shown below) back box as well as aWMAD door is  
required for installation. Refer to the instructions provided with these items for proper installation.  
(See Components on page 13.)  
Front Panel Input Connector  
If desired, a front panel mounted combination female XLR and 1/4" stereo  
phone jack can be installed.A white screened area is provided on the front  
of the amplifier, below the connector, to identify the connectors purpose  
and associated input number. Remove the filler cap in the upper left-hand  
corner of the front panel and install the combination jack as shown in the  
figures below. Either or both of the connector styles on the jack can be  
wired to any user supplied module with included cables.The labeling below  
the two cable connectors on the PCB identifies corresponding connectors  
on the combo jack.  
PHONE  
T
G
R
WHT BLK RED  
+
G
XLR WHT BLK RED  
Connection Identifiers  
4
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Modules  
Module Installation  
Eight module bays are available to accept Bogen’s new advanced plug-in input modules. Module bays 7 & 8 can  
also accommodate Bogen’s new advanced plug-in output modules, thereby allowing users to customize the  
amplifier to suit the needs of the installation.  
(Note:The bays will not accept Bogen’s older style plug-in modules.)  
Before installing a module, read the instructions included with the module and make the desired jumper setting  
changes.  
The modules are installed by simply sliding them along the card guides inside the module bays until the  
faceplate firmly sits against the chassis, then use the two screws supplied with the module to secure it to the  
chassis.  
Modules should slide in easily.  
Output modules can only be installed in bays 7 & 8. (Output modules will not  
- CAUTION -  
fit in bays 1-6.)  
DO NOT FORCE MODULES  
Output modules have 8 contacts on each side of connector.  
Input modules have 6 contacts on each side of connector.  
Older style Bogen (D-Series) input modules (4-1/2" in length) are not usable  
in any PowerVector amp.  
Output Modules  
Functionality  
The Wall-Mount Power Vector series of amplifiers accepts Bogen plug-in output modules, which offers a cost  
effective and convenient way to add specific signal processing capability into a system.When an output module  
is installed, the mix bus signal is automatically rerouted through the output module, whose capabilities further  
process the signal before it enters the power amplifier section.  
Up to 2 output modules can be installed in a PowerVector amplifier using module bays 7 & 8 (these bays also  
accept input modules). When two output modules are installed,their signal processing effects are cascaded.The  
mix bus signal will first pass through the output module in module bay 7 and then through the output module  
in bay 8. In some instances, the order in which the signal processing is applied is important and can be achieved  
by the module installation order.  
Output modules automatically insert themselves into the signal path between the mix bus and power amp  
stage, so no further connections are required beyond simply inserting the modules. Most Bogen output mod-  
ules include an unbalanced, Hi-Z input.This input feeds directly to the amplifier’s mix bus through the front level  
control for the particular module bay and is not processed by the output module directly.The input is includ-  
ed so that the additional input function of the module bay is not forfeited when an output module is installed.  
Input Modules  
Functionality  
The Wall-Mount PowerVector series of amplifiers accepts Bogen’s new advanced plug-in input modules, which  
provide a wide range of input types allowing the amplifier inputs to be custom configured in both type and num-  
ber for a particular application. Input modules can be installed in any of the 8 module bays and do not have to  
be installed in any particular bay order.The front panel volume control for that number bay will control the mix  
level of that input module. In addition to a host of module specific features, each input module has a priority  
jumper section for creating a priority hierarchy between different inputs installed in the amplifier.  
Priorities  
The Wall-Mount Power Vector series of amplifiers allows inputs to be prioritized at four different levels.The  
Bogen input modules contain circuitry that can cause their outputs to be muted in response to higher priori-  
ty control signals from other input modules. Each input module also contains circuitry that sends a mute con-  
trol signal out to other modules when it becomes active (all input modules become “active” when they receive  
an audio input).Active modules may be prevented from sending their audio onto the mix bus by a higher pri-  
ority module that is also active.  
Input priorities are set through a simple jumper field on the module. It is also possible not to assign a priority  
level to an input module. By doing so, that module will never be muted by another input module in the ampli-  
fier.The unassigned inputs will, however, be muted by the amplifier’s Master Mute input.  
5
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Connections  
Speakers  
Transformer-Coupled Speaker Connections  
Transformer-coupled, constant voltage speaker loads are connected to  
their respective load type (i.e., 70V speakers to the 70V terminal, 25V  
speaker systems to the 25V terminals) and the COM terminal. Make sure  
the selector switch is in theTRANS OUT position. A separate 8-ohm ter-  
minal is provided to drive 8-ohm (low-impedance) speakers through an  
output transformer tap.  
The speaker terminals can accept up to a #10 spade lug and have integral  
clamping plates that make wiring easier.  
4-Ohm Low-Impedance Speaker Connections  
A low-impedance (4) speaker load can be driven directly without trans-  
former coupling by connecting the load to the 4terminal and the GND  
terminal. Make sure the selector switch is in the DIRECT OUT position.  
Bypassing the output transformer and driving the speaker load directly  
provides the advantage of better bass response.To maximize the power  
delivered to the speakers, their combined load impedance should be 4  
ohms. Connecting higher load impedances is electrically acceptable, but  
the mismatch in load impedance will cause the speaker load to only  
receive a portion of the power that the amplifier is capable of delivering.  
It is not acceptable to connect low-impedance speakers to the 70V and  
25V outputs.  
Typical connections to a 70V  
transformer-coupled speaker  
Typical connections to a low-impedance  
(non-transformer-coupled) speaker load  
Note jumper link shorting the  
GND to the COM terminal.  
Note switch is set  
to DIRECT OUT  
Note jumper link shorting the  
GND to the COM terminal.  
Note switch is set  
to TRANS OUT  
6
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Connections  
COM and GNDTerminals  
A shorting jumper typically connects the COM and GND terminals of  
the amplifier together. The COM terminal is a common lead from the  
output transformer. For the transformer-coupled speaker output to  
work, one of the speaker load leads must be connected to this terminal.  
The GND terminal is a connection to the system’s electrical ground and  
used when driving loads in the Direct Out mode.  
Connecting the GND to the COM terminal when using the transformer-  
coupled outputs references the transformer output to ground.  
Disconnecting the GND terminal from COM allows the transformer  
output to float electrically.This is sometimes useful under certain condi-  
tions where a ground connection is undesirable. It is generally a good  
idea, however, to short the GND to the COM terminal regardless of  
output type (Trans or Direct).  
Remote Volume Control  
Three terminals are provided for remote control of the MasterVolume  
control.This control is motorized, allowing full control over the setting  
of the master volume. Shorting the UP terminal with the C terminal will  
rotate the MasterVolume control in a clockwise direction, increasing the  
volume level. Shorting the DN terminal to the C terminal will cause the  
Master Volume control to rotate in a counterclockwise direction and  
decrease the level of the Master Volume control.The impedance of the  
shorting connections must be less than 100 ohms in order to operate  
the control. The Bogen Remote Volume Control Panel (model RVCP)  
provides a simple and elegant means of remote control.  
Master Mute  
Two terminals are provided for invoking a Master Mute function.When  
the master mute terminals (1 & 2) are shorted through a resistance of  
less than 100 ohms,all audio from the mixer section of the PowerVector  
amplifier is interrupted.The power amplifier section is still operational  
under this condition. Terminal number 2 is at ground potential. The  
Signal/Clip LEDs will continue to show input activity while the master  
mute is engaged.  
7
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Operation  
Front Panel Controls & Indicators  
InputVolume Controls  
Each input module may be individually controlled by its corresponding  
volume control knob.  
Signal / Clip Indicator  
A single LED located above each channel’s volume control indicates the  
audio activity of that channel’s input. Green indicates signal is being  
applied to the mix bus. Red indicates that the input signal coming from  
the input module into the amp is clipping and distorted.This is caused by  
either an input signal that is too high or an input module volume control  
(gain) that is set too high.  
Bass andTreble Controls  
The treble control has a cut/boost range of +/- 10 dB at frequencies  
above 10 kHz and provides a roll off after 20 kHz to reduce gain above  
the audio range.  
The bass control has a cut/boost range of +/- 10 dB at frequencies below  
100 Hz. When driving speakers using the direct-coupled output termi-  
nals, the bass filter’s response is constant to 20 Hz.When driving speak-  
ers using the transformer-coupled output terminals, the amplifier auto-  
matically changes the bass filter’s response to a bandpass shape to reduce  
the level of bass frequencies below 40 Hz.This filter shape helps to avoid  
overdriving the speaker’s coupling transformer with low frequency sig-  
nals that may cause noticeable distortion due to magnetic saturation of  
the transformer’s core.  
MasterVolume Control  
The overall volume level of the amplifier is set by a MasterVolume con-  
trol.The Master Volume control is motorized and can be controlled by  
manually adjusting the knob or by a remotely-mounted control station.  
Connections and requirements for the remote control station (optional  
accessory) are described in the Connections section, under RemoteVolume  
Control.  
Average / Peak Switch & LED Output Meter  
The LED Output Meter is an 11-segment meter that registers either the  
average or the peak level of the amplifier’s output signal.A red indicator  
is provided at the +3 dB level to indicate amplifier clipping.Amber indic-  
tors at the 0dB and -3 dB levels indicate high amplifier output levels.The  
remaining 8 indicators (green) provide an indication of the output signal’s  
dynamics.The meter can be set to read either the average output signal  
level or the peak output signal levels by using the Average / Peak Switch  
to the left of the meter. In is average; out is peak.  
Power Switch / Power Indicator  
TheAC power to the amplifier is controlled by the Power rocker switch,  
which illuminates when power is applied.  
8
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Operation  
Output Limiter  
The Output Limiter control sets the threshold at which the unit hard  
limits the output signal. Once the Limiter's threshold is exceeded, the  
output signal is prevented from increasing any further.With the control  
set to the Min position (fully counterclockwise), the Limiter will pro-  
vide almost no limiting and is essentially turned off. It will only engage  
when very large output levels are produced. As the control is turned  
clockwise, more limiter function will be allowed and the output level  
necessary to engage the Limiter decreases.  
Typically,the Limiter is set to prevent clipping caused by overdriving the  
amplifier beyond its maximum output level.This setting is established by  
using both the Output Level Meter and the Limiter LED.  
First, adjust the amplifier’s output level until the Output Level Meter  
registers in the amber region.Then, adjust the Output Limiter control  
until the Limiter LED illuminates intermittently. The LED associated  
with the Limiter illuminates when the Limiter is engaged. If the output  
level of the amplifier exceeds this point, then the Limiter will engage,  
thereby keeping the Output Level Meter in the amber region. The  
Limiter can also be set to restrict the amplifier's output level to a  
desired level below the amplifier's maximum level to provide a means  
of limiting the system's volume level. In this case, the amplifier is driven  
to the desired output level and then the Limiter control is adjusted so  
that it begins to engage. In general, input and master controls should be  
set so that the Limiter engages as little as possible.  
Rear Panel Controls  
Load Selector Switch  
A large slide switch next to the amplifier’s output barrier strip deter-  
mines transformer-coupled or direct output operation.The setting of  
this switch controls which amplifier output terminals are active and  
what type of filter shape will be used for the bass control. See the  
Connections section for more information about the load selector  
switch.  
Other Controls (Located In Module Bay 6)  
Tone Control Bypass Switch  
A slide switch that can bypass the effects of the Bass  
and Treble controls is located on the back plane of  
module bay 6. It is sometimes desirable to bypass  
the tone controls when other forms of system  
equalization are used.A screwdriver can be used to  
set the switch. The switch must be set before a  
module is installed in this bay.  
Low-Cut Switch  
The PowerVectorAmplifier provides a low-cut filter  
that rolls off frequencies below 125 Hz. The slide  
switch for this function is located on the back plane  
of module bay 6. A screwdriver can be used to set  
the switch.The switch must be set before a module  
is installed in this bay.  
9
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Block Diagram  
10  
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Specifications  
Power Output (RMS):  
WV100: 100W (140W Typical, @1 kHz/0.1%/4Ω)  
WV150: 150W (200W Typical, @1 kHz/0.1%/4Ω)  
WV250: 250W (340W Typical, @1 kHz/0.1%/4Ω)  
Frequency Response  
Transformer:  
45-20 kHz; 0/-2 dB @ FRP  
Direct:  
20-20 kHz; 0/-1 dB @ FRP  
Distortion  
Transformer:  
Direct:  
0.5% THD+N, Maximum, Full-rated bandwidth @ FRP  
0.1% THD+N, Maximum, Full-rated bandwidth @ FRP  
Signal-to-Noise  
Fundamental:  
With Aux Module:  
With Mic Module:  
With Tel Module:  
-94 dB*  
-70 dB*  
-60 dB*  
-70 dB*  
Tone Controls  
Bass Frequency:  
Treble Frequency:  
Low Cut Frequency:  
100 Hz (+/- 10 dB minimum)  
10 kHz (+/- 10 dB minimum)  
125 Hz @ -6 dB/octave  
Sensitivity:  
0.4V (at backplane connector)  
Output Regulation:  
2 dB or better no load to full load  
Output Impedance  
Transformer-Coupled:  
Direct Coupled:  
70V, 25V, 8 ohms; balanced or unbalanced  
4 ohms unbalanced  
Tape Out  
Output Level:  
4VRMS @ FRP  
Output Impedance:  
50 ohms maximum  
Protection:  
Line Fusing:  
Thermal, short-circuit, and overload (auto reset)  
Resettable circuit breaker  
Cooling:  
Thermally controlled 3-speed fan  
Power Consumption:  
WV100:  
WV150:  
WV250:  
2.0A @ 120V AC, 60 Hz  
3.5A @ 120V AC, 60 Hz  
5.5A @ 120V AC, 60 Hz  
Dimensions:  
WV (all models):  
BBF:  
BBS:  
14-1/8" W x 21" H  
14-1/2" W x 24-3/4" H x 3-7/8" D  
16-1/4" W x 26-3/4" H x 3-7/8" D  
16-1/4" W x 26-3/4" H x 1" D  
WMAD:  
Product Weight:  
WV100:  
WV150:  
WV250:  
BBF:  
BBS:  
WMAD:  
27 lb.  
29 lb.  
28 lb.  
14 lb.  
18 lb.  
11 lb.  
* Referenced to full-rated power (FRP) output level, 20-20 kHz bandwidth limited.  
All specifications subject to change without notice.  
11  
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Troubleshooting  
PROBLEM  
CONDITION  
CAUSE  
• Amplifier not plugged in.  
• AC outlet dead.  
• Power switch off.  
• Circuit breaker tripped.  
Power Indicator LED is off.  
Power Indicator LED is red.  
Input Signal / Clip LED is off.  
• No signal from source.  
• Module not installed correctly.  
NO SOUND  
Power Indicator LED is red.  
Input Signal / Clip LED is green.  
LED Output Meter is off.  
• Master or input channel volume control turned down.  
• Rear panel master mute terminal shorted.  
• Speaker connections on amplifier are incorrect.  
Trans / Direct Out selector not set correctly.  
• Poor / broken speaker wiring.  
Power Indicator LED is red.  
Input Signal / Clip LED is green.  
LED Output Meter is operating.  
• Defective speakers.  
Power Indicator LED is red.  
Input Signal / Clip LED is green.  
Volume Controls are turned up and  
shows little activity.  
• Partial short on the output.  
Unit is extremely hot.  
• Signal from source is already distorted.  
• Poor speaker connections.  
Trans-Out load on wrong tap.  
• Bass control boosted too much.  
Power Indicator LED is red.  
Input Signal / Clip LED is green.  
LED Output Meter is not in red.  
DISTORTED  
SOUND  
• Input signal level to module too high (should cause red  
clip LED).  
• Input module gain too high (if available).  
• Input module being overdriven by a high input signal.  
Power Indicator LED is red.  
Input Signal / Clip LED is red.  
LED Output Meter is not in red.  
Power Indicator LED is red.  
Input Signal / Clip LED is green.  
LED Output Meter in red.  
• Input volume controls set too high.  
• Input master volume control set too high.  
• Lo-cut switch is set to ON.  
• Speakers wired out of phase.  
• Check module bass control setting (if available).  
• Check bass control setting  
• Note: Transformer-coupled speakers have less bass  
response.  
POOR  
Power Indicator LED is red.  
Input / Signal Clip LED is green.  
LED Output Meter not in red.  
LOW FREQ.  
RESPONSE  
(NO BASS)  
• Poor electrical connections at input.  
• Input cable routed near AC cables, power transformer, or  
other EMI radiating devices.  
Power Indicator LED is red.  
Volume controls are in normal,  
operational position.  
• Electrically noisy devices operating on the same AC  
circuit.  
• Poor equipment grounding.  
NOISE/HUM  
- Ensure that all AC safety grounds are connected.  
- Make sure that all components in audio chain are tied to  
the same ground.  
12  
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Warranty  
Bogen Wall-Mount PowerVector Amplifiers, modules, and components are warranted to be free from defects in mate-  
rial or workmanship provided that the product has not been subjected to abuse or accident or altered in any way for  
three (3) years from the date of sale to the original purchaser with the exception of the remote volume control panel  
(RVCP), which is warranted for one (1) year.Any part of the product covered by this warranty that, with normal instal-  
lation and use, becomes defective will be repaired or replaced by Bogen, at our option, provided the product is shipped  
insured and prepaid to: Bogen Factory Service Department, 50 Spring Street, Ramsey, NJ 07446, USA.The product will  
be returned to you freight prepaid.This warranty does not extend to any of our products that have been subjected to  
misuse, improper storage, neglect, accident, improper installation or have been modified or repaired in any manner that  
Bogen believes may affect the reliability of the product, or where the serial number or date code has been removed or  
defaced.  
THE FOREGOING LIMITED WARRANTY IS BOGEN’S SOLE AND EXCLUSIVE WARRANTY AND  
THE PURCHASER’S SOLE AND EXCLUSIVE REMEDY. BOGEN MAKES NO OTHER WARRANTIES  
OF ANY KIND, EITHER EXPRESS OR IMPLIED, AND ALL IMPLIED WARRANTIES OF MER-  
CHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE ARE HEREBY DISCLAIMED AND  
EXCLUDED. Bogen's liability arising out of the manufacture, sale or supplying of products or their use or disposition,  
whether based upon warranty, contract, tort or otherwise, shall be limited to the price of the product. In no event shall  
Bogen be liable for special, incidental or consequential damages (including, but not limited to, loss of profits, loss of data  
or loss of use damages) arising out of the manufacture, sale or supplying of products, even if Bogen has been advised  
of the possibility of such damages or losses.  
Products that are out of warranty will also be repaired by the Bogen Factory Service Department -- same address as  
above or call 201-934-8500. The parts and labor involved in these repairs are warranted for 90 days when repaired by  
the Bogen Factory Service Department. All shipping charges in addition to parts and labor charges will be at the  
owner's expense.  
Accessories/Components  
Mounting Components  
1. One of the following two back boxes are required for assembly.  
BBF - Flush-Mount Back Box  
Mounting kit for installing amplifier flush to a wall  
BBS - Surface-Mount Back Box  
Mounting kit for installing amplifier to the surface of a wall  
2.The WMAD is required for assembly.  
WMAD - Front Cover / Door  
BBS  
BBF  
Prevents tampering with system settings  
Simple installation  
Accessories  
The following item is an optional accessory.  
RVCP - RemoteVolume Control Panel  
Push-button operation of motorized master volume  
control  
Fits in standard single gang electrical box  
Decora style cover plate  
WMAD  
RVCP  
13  
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50 Spring Street, Ramsey, NJ 07446, U.S.A.  
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