TOA Electronics Portable Speaker SR A12L User Manual

OPERATING INSTRUCTIONS  
LINE ARRAY SPEAKER  
SR-A12L, SR-A12S, SR-A18B,  
SR-A12LWP, SR-A12SWP  
RIGGING FRAME  
SR-RF12, SR-RF12WP  
SR-TP12  
TILT JOINT PLATE  
Note that casters must be prepared separately.  
Thank you for purchasing TOA’s Line Array speaker system, Rigging Frame and Tilt Joint Frame.  
Please carefully follow the instructions in this manual to ensure long, trouble-free use of your equipment.  
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1. SAFETY PRECAUTIONS  
• Before installation or use, be sure to carefully read all the instructions in this section for correct and safe  
operation.  
• Be sure to follow all the precautionary instructions in this section, which contain important warnings and/or  
cautions regarding safety.  
• After reading, keep this manual handy for future reference.  
Safety Symbol and Message Conventions  
Safety symbols and messages described below are used in this manual to prevent bodily injury and property  
damage which could result from mishandling. Before operating your product, read this manual first and  
understand the safety symbols and messages so you are thoroughly aware of the potential safety hazards.  
Indicates a potentially hazardous situation which, if mishandled, could  
result in death or serious personal injury.  
WARNING  
Indicates a potentially hazardous situation which, if mishandled, could  
result in moderate or minor personal injury, and/or property damage.  
CAUTION  
• (SR-A12LWP, SR-A12SWP, SR-RF12WP only)  
When installing the unit in a snowy area, take  
appropriate measures to prevent snow from lying  
WARNING  
on the unit. If the snow lies on the unit, the unit may  
• Avoid installing or mounting the unit in unstable  
fall, causing personal injuries.  
locations, such as on a rickety table or a slanted  
surface. Doing so may result in the unit falling  
• Owing to the unit's size and weight, be sure that at  
down and causing personal injury and/or property  
least two persons are available to install the unit.  
damage.  
Failure to do so could result in personal injury.  
• Refer all installation work to the dealer from whom  
• Do not use other methods than specified to mount  
the speaker was purchased. Installation for flying  
the bracket. Extreme force is applied to the unit  
requires extensive technical knowledge and  
and the unit could fall off, possibly resulting in  
experience. The speaker may fall off if incorrectly  
personal injuries.  
installed, resulting in possible personal injury.  
• Use nuts and bolts that are appropriate for the  
ceiling's or wall's structure and composition. Failure  
• Flying Precautions  
Be sure to follow the instructions below. Otherwise,  
to do so may cause the speaker to fall, resulting in  
the suspension wires or belts may be off or snap  
material damage and possible personal injury.  
and the speaker may fall off, causing personal  
injury.  
• Tighten each nut and bolt securely. Ensure that the  
bracket has no loose joints after installation to  
· Check to confirm that the suspension wires and  
prevent accidents that could result in personal  
belts are strong enough to withstand the speaker  
injury.  
load.  
· The connectors of the suspension wires and belts  
• Use only the specified mounting brackets. Doing  
must be securely linked with those of the  
otherwise may cause the unit or component to fall  
off, resulting in personal injury.  
speaker.  
· All parts and components (such as enclosures,  
metal pieces, and screws) must be free from any  
• Do not mount the unit in locations exposed to  
deformation, crack, and corrosion.  
constant vibration. The mounting bracket can be  
· Be sure to use screws supplied with the optional  
damaged by excessive vibration, potentially  
flying hardware when installing the speaker using  
causing the unit to fall, which could result in  
such hardware.  
personal injury.  
• Install the unit only in a location that can  
structurally support the weight of the unit and the  
mounting bracket. Doing otherwise may result in  
the unit falling down and causing personal injury  
and/or property damage.  
3
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• Do not operate the unit for an extended period of  
time with the sound distorting. This is an indication  
of a malfunction, which in turn can cause heat to  
generate and result in a fire.  
CAUTION  
• When unpacking or moving the unit, be sure to  
handle it with two or more persons. Falling or  
dropping the unit may cause personal injury and/or  
property damage.  
• Do not stand or sit on, nor hang down from the unit  
as this may cause it to fall down or drop, resulting  
in personal injury and/or property damage.  
• Avoid placing the unit in a doorway or other high  
traffic area as people may trip on the equipment  
and cords, or be injured by falling objects.  
• Have the unit checked periodically by the shop  
from where it was purchased. Failure to do so may  
result in corrosion or damage to the speaker or its  
mounting bracket that could cause the speaker to  
fall, possibly causing personal injury.  
• Avoid touching the unit's sharp metal edge to  
prevent injury.  
4
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2. GENERAL DESCRIPTION  
TOA’s SR-A series Line Array speaker employ unique wave front control technology to create a sound field  
with high sound clarity and uniform sound pressure. The lineup features types with vertical directivity angles of  
5 degrees and 15 degrees, as well as subwoofers. Optional components include the Rigging Frame required  
for installation and the Tilt Joint Plates that allow stacked speakers to be tilted downward, permitting speaker  
systems to be customized for a wide variety of permanent installation applications.  
3. FEATURES  
• TOA’s unique wave front control technology permits the linearly arranged speakers to produce a uniform,  
interference-free high-frequency sound field offering high sound clarity and excellent long distance sound  
transmission capability.  
• The SR-A12L(WP) Line Array speaker is a 2-way multi-amplifier driven speaker system featuring a 30 cm  
high power output woofer and 2 compression drivers. It features 5 degrees of vertical directivity and 90  
degrees of horizontal directivity, and is best suited to long-distance sound transmission applications.  
• The SR-A12S(WP) Line Array speaker is a 2-way multi-amplifier driven speaker system featuring a 30 cm  
high power output woofer and 2 compression drivers. It features 15 degrees of vertical directivity and 90  
degrees of horizontal directivity, and is best suited to short-distance sound transmission applications.  
• Combining the long-distance SR-A12L(WP) with the short-distance SR-A12S(WP) permits construction of  
Line Array speaker systems to meet a wide range of applications.  
• The SR-A18B Subwoofer employs a large-diameter 46 cm woofer unit for high power handling capability,  
and is designed to be used in conjunction with the SR-A12L or SR-A12S Line Array speakers.  
• Maintenance can be performed from the rear of the enclosure.  
• Line Array speakers and sub-woofers can be joined vertically using the supplied Joint Plates. When joined,  
directivity can be freely adjusted, with overlapping angles between speakers set to between 0 and 5  
degrees, in 1-degree units.  
• The SR-RF12 Rigging Frame permits the Line Array speakers to be arranged in flying or stacked  
configurations. The SR-A12LWP and SR-A12SWP Line Array speakers can also be installed outdoors in  
flying configurations using the SR-RF12WP frame.  
• When stacking Line Array speakers with the Rigging Frame, the downward angle can be increased by up to  
10 degrees if the SR-TP12 Tilt Joint Plate is additionally used, allowing more appropriate coverage areas to  
be set.  
• The SR-A12LWP and SR-A12SWP are in full conformity with IPX4 Standards, and can be installed  
outdoors. For outdoor installation conditions, refer to page 17; “Notes on Outdoor Installation” of this manual.  
4. DIMENSIONS  
SR-A12L  
Unit: mm  
Input panel  
(Rear)  
Joint plate (accessory)  
740  
716  
Flying plate (Front)  
469  
Flying plate (Rear)  
(Left Side)  
(Front)  
(Right side)  
5
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SR-A12S  
Unit: mm  
Input panel  
(Rear)  
Joint plate (accessory)  
740  
716  
Flying plate (Front)  
467  
Flying plate (Rear)  
(Right side)  
(Left Side)  
(Front)  
SR-A18B  
Unit: mm  
Input panel  
Joint plate (accessory)  
Flying plate (Front)  
(Rear)  
740  
716  
698  
Flying plate (Rear)  
(Right side)  
(Left Side)  
(Front)  
6
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SR-A12LWP  
Input panel  
Unit: mm  
Joint plate (accessory)  
(Rear)  
740  
716  
Flying plate (Front)  
Green LOW (+)  
Black LOW (-)  
Red HIGH (+)  
White HIGH (-)  
469  
Flying plate (Rear)  
(Left Side)  
(Front)  
(Right side)  
Air Hole (Bottom only)  
(Bottom)  
SR-A12SWP  
Input panel  
Unit: mm  
Joint plate (accessory)  
Flying plate (Front)  
(Rear)  
740  
716  
Green LOW (+)  
Black LOW (-)  
Red HIGH (+)  
White HIGH (-)  
467  
Flying plate (Rear)  
(Left Side)  
(Front)  
(Right side)  
Air Hole (Bottom only)  
(Bottom)  
7
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SR-RF12, SR-RF12WP  
Caster Mounting Plate  
16-M10  
Unit: mm  
105  
164  
595  
21-ø20  
180  
71  
95  
140  
(Left side)  
(Top)  
716  
(Right side)  
6
6
(Front)  
728  
(Bottom)  
SR-TP12  
Unit: mm  
484  
8
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5. INPUT CONNECTORS  
SR-A12L, SR-A12S and SR-A18B (for Indoor use)  
Figures below show the input connector arrangements of each speaker system. Since connector and screw  
terminal are internally connected in parallel, either connector can be used for connection.  
SR-A12L, SR-A12S  
SR-A18B  
The NEUTRIK NL4MP connectors pins are wired as shown below.  
Pin No.  
1+  
SR-A12L, SR-A12S  
LOW +  
SR-A18B  
INPUT +  
1-  
LOW -  
INPUT -  
2+  
2-  
HIGH +  
HIGH -  
THROUGH  
THROUGH  
The connector (connection cable side) suited to the NEUTRIK NL4MP is the NEUTRIK NL4FC.  
SR-A12LWP and SR-A12SWP (for outdoor use)  
Figure below shows the speaker cable arrangement of each speaker system.  
Green LOW (+)  
Black LOW (-)  
Red HIGH (+)  
White HIGH (-)  
9
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6. INTERNAL WIRING DIAGRAM  
Figures below show the internal wirings of each speaker system.  
SR-A12L, SR-A12S  
LOW +  
LOW  
HIGH +  
HIGH  
1+  
2+  
1+  
2+  
-
2-  
2
-
1-  
1-  
-
SR-A12LWP, SR-A12SWP  
Green  
LOW +  
Black  
LOW  
HIGH +  
HIGH  
-
Red  
White  
-
Speaker cable  
SR-A18B  
INPUT +  
INPUT  
1+  
2+  
1+  
2+  
-
2-  
2
-
1-  
1-  
THROUGH  
THROUGH  
7. CONNECTIONS  
System using the SR-A12L, SR-A12S, SR-A12LWP or SR-A12SWP  
SR-A12L, SR-A12S,  
SR-A12LWP, SR-A12SWP  
Mixer/Pre-amplifier  
Digital Processor  
LOW  
Power Amplifier  
LOW  
HIGH  
HIGH  
System which combines the SR-A12L or SR-A12S with the SR-A18B  
SR-A12L, SR-A12S  
Mixer/Pre-amplifier  
Digital Processor  
LOW  
Power Amplifier  
LOW  
HIGH  
HIGH  
S-LOW  
SR-A18B  
10  
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8. DIGITAL PROCESSOR SETTINGS  
Recommended setting parameters are as follows.  
System using the SR-A12L, SR-A12S, SR-A12LWP or SR-A12SWP  
Filter  
Freq. (Hz)  
Gain  
(dB)  
Delay  
(msec)  
Channel  
LOW  
Polarity  
Normal  
TYPE  
HPF (12 dB)  
LPF (12 dB)  
LPF (12 dB)  
PEQ  
Gain (dB)  
Q
40  
1.0k  
1.0k  
300  
0.900  
0.707  
0.707  
2.549  
2.549  
0.707  
1.011  
1.414  
1.160  
0
0
0.708  
-5.0  
PEQ  
530  
-
4.5  
HPF (12 dB)  
PEQ  
1.2k  
2.5k  
5.0k  
14.0k  
HIGH  
Inverse  
0
-10.0  
PEQ  
-
2.0  
9.0  
PEQ  
System which combines the SR-A12L or SR-A12S with the SR-A18B  
Filter  
Freq. (Hz)  
Gain  
(dB)  
Delay  
(msec)  
Channel  
S-LOW  
Polarity  
Inverse  
TYPE  
LPF (12 dB)  
LPF (12 dB)  
HPF (12 dB)  
HPF (12 dB)  
PEQ  
Gain (dB)  
Q
90  
200  
20  
0.707  
1.000  
0.707  
1.505  
1.800  
0.900  
0.707  
0.707  
2.549  
2.549  
0.707  
1.011  
1.414  
1.160  
3.0*  
0.708  
0.708  
0
35  
34.5  
77.5  
1.0k  
1.0k  
300  
530  
1.2k  
2.5k  
5.0k  
14.0k  
6.0  
HPF (12 dB)  
LPF (12 dB)  
LPF (12 dB)  
PEQ  
LOW  
HIGH  
0
Normal  
Inverse  
-
-
5.0  
4.5  
PEQ  
HPF (12 dB)  
PEQ  
0
-10.0  
PEQ  
-
2.0  
9.0  
PEQ  
* The Gain on the S-LOW channel needs to be adjusted depending on the system configuration.  
11  
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9. FLYING  
9.1. General Description  
Use the SR-RF12(WP) Rigging Frame for flying the Line Array speaker. With the use of the SR-RF12(WP), up  
to 8 Line Array speakers can be arranged in flying configuration. The SR-A18B Subwoofer system is counted  
as 1.5 pieces. When joining two or more speakers, or joining the rigging frame and the speaker, use the Joint  
Plate supplied with the speaker. Basic flying system is shown below.  
Rigging frame  
SR-A18B  
Joint plate  
(supplied with the SR-A18B)  
Joint plate  
(supplied with the SR-A12L)  
SR-A12L  
Joint plate  
(supplied with the SR-A12S)  
SR-A12S  
The vertical directivity angle of the Line Array speaker is 5 degrees for the SR-A12L(WP) and 15 degrees for  
the SR-A12S(WP).  
SR-A12L(WP)  
SR-A12S(WP)  
15 degrees  
5 degrees  
12  
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This flying system is made up of four SR-A12L speakers, two SR-A12S speakers, and one SR-A18B speaker.  
To transmit sound over long distances, the four SR-A12Ls are given overlapping angles of 4, 2, and 1 degree,  
resulting in a total vertical directivity angle of 43 degrees. The overlapping angle can be adjusted by means of  
the Joint Plates used to join the speakers. The horizontal directivity angle is fixed at 90 degrees.  
SR-A18B  
Enclosure opening angle:  
4 degrees  
SR-A12L  
Overlapping angle:  
4 degrees  
5 degrees  
Enclosure opening angle:  
2 degrees  
SR-A12L  
Overlapping angle:  
2 degrees  
Enclosure opening angle:  
1 degree  
5 degrees  
SR-A12L  
Overlapping angle:  
1 degree  
5 degrees  
SR-A12L  
5 degrees  
SR-A12S  
15 degrees  
15 degrees  
SR-A12S  
43 degrees  
As can be seen in the accompanying figure, the overlapping angle equals the rear-opening angle between  
enclosures.  
[Example] To adjust the sound radiation-overlapping angle to 5 degrees, set the rear-opening angle between  
enclosures to 5 degrees.  
No sound overlapping angle is created if speakers are joined without space provided between enclosures.  
9.2. SR-RF12(WP) Rigging Frame assembly  
For assembling, refer to the figure below. Tighten 3 supplied bolts with plain washers and spring washers  
securely to fix each Mounting Plate to the rigging frame.  
Mounting Plate, Front A  
Mounting Plate, Rear A  
Rigging frame  
Finished  
assembly diagram  
Mounting Plate, Front B  
Mounting Plate, Rear B  
13  
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9.3. Joining the Enclosure to the Rigging Frame  
Flying Plates are mounted at both the front and rear of the enclosures sides. Follow the procedure below to  
mount the enclosure to the Rigging Frame, as shown in the assembly diagrams.  
Fix a supplied Joint Plate securely to the left side of the Rigging Frame and another to the right side of the  
enclosure, each using 4 supplied bolts with plain washers and spring washers.  
Before securing the Joint Plate, determine whether the enclosures horn will face right or left. (This is not  
required for the SR-A18B Subwoofer.) When suspending the subwoofer, install the system so that the  
subwoofer is positioned at the top (directly below the Rigging Frame).  
High box assembly diagram  
Subwoofer assembly diagram  
Joint plate  
Joint plate  
Joint plate  
Joint plate  
Flying plate  
Flying plate  
Join the enclosure to the Rigging Frame securely, using 4 supplied bolts with plain washers and spring  
washers on each side. For Joint Plate mounting holes, use the hole that creates an overlapping angle of 0  
degree. Refer to the assembly diagrams below.  
High box finished assembly diagram  
(Left side)  
(Right side)  
Subwoofer finished assembly diagram  
(Left side)  
(Right side)  
14  
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9.4. Joining Enclosures  
Use the supplied Joint Plate to join the enclosures by way of the enclosure's flying plate. As shown in the  
figure, mount a Joint Plate securely to the upper enclosure's lower left side, using 4 supplied bolts with plain  
washers and spring washers. Similarly, attach another Joint Plate to the lower enclosure's upper right side.  
Joint Plate  
Joint Plate  
Join the enclosures securely, using 4 supplied bolts with plain washers and spring washers on each side.  
Because the Joint Plate has holes to be used for setting the overlapping angle, use the holes that provide the  
desired overlapping angle. The overlapping angle can be set to between 0 and 5 degrees in 1-degree units.  
Joint Plate  
Enclosure  
opening angle:  
5 degrees  
Enclosure  
opening angle:  
0 degree  
Overlapping angle:  
5 degrees  
Overlapping angle: 0 degree  
15  
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9.5. Notes on Flying  
Check to confirm that the suspension wires, belts, construction of the  
ceiling, etc are strong enough to withstand the speaker load.  
Tighten each joint bolt to 300-350 kg·cm of torque securely.Be sure to  
use the joint bolts supplied with the speaker and the Rigging Frame.  
Up to 8 Line Array speakers can be arranged in flying configuration  
per one Rigging Frame. The Subwoofer is counted as 1.5 pieces. No  
more than 8 speakers can be arranged in flying configuration.  
WARNING  
Fly the assembled system vertically from at least at  
two points on the left and right sides.  
Use a suspension point that provides the desired  
downward angle. The downward angle increases  
as the suspension point is moved backward.  
Center of  
gravity position  
Add anti-swing guy wires as needed. Take care not  
to apply the enclosures weight on the guy wires.  
Anti-swing guy wires  
16  
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Notes on Outdoor Installation  
In case of outdoor installation, follow the notes mentioned below.  
WARNING  
Only the SR-A12SWP or SR-A12LWP Line Array speaker can be installed outdoors. There is no Subwoofer  
available to be installed outdoors.  
WP type speaker features the water protection construction (IPX4), however install it under roofs, eaves, or  
other locations not directly exposed to rain or snow.  
Install the speaker so that its air hole is positioned downward, causing the horn face to the right as shown  
below.  
Air Hole  
The installation angle of the speakers top panel must be between 0 degree from the horizontal axis and up  
to 50 degrees downward.  
Horizontal axis:  
0 degree  
50 degrees  
Use the SR-RF12WP Rigging Frame.  
Never suspend the SR-RF12WP Rigging Frame with wires. Be sure to fix it securely to the constructions  
with mounting hardware.  
When permanently installing the speaker outdoors, inspect it periodically.  
17  
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10. STACKING  
10.1. General Description  
Line Array speakers can be stacked using the SR-RF12 Rigging Frame. Up to 5.5 speakers can be stacked,  
counting each Line Array speaker as 1 piece and each SR-A18B Subwoofer as 1.5 pieces. Shown below is a  
basic stacked system. Note that casters must be prepared separately.  
SR-A12L  
Joint Plate  
SR-A18B  
Rigging Frame  
Caster (required by the user)  
This stacking system is made up of four SR-A12L speakers, and one SR-A18B speaker. The directivity  
characteristic is 20 degrees vertically and 90 degrees horizontally. The overlapping angles are all set at 0 degree.  
10.2. SR-RF12 Rigging Frame assembly  
Select the positions of the mounting plates and assemble keeping the stacked systems center of gravity in  
mind. Tighten 3 supplied bolts with plain washers and spring washers securely to fix each Mounting Plate to  
the rigging frame.  
Assembly diagram  
Mounting Plate, Rear B  
Mounting Plate,  
Front B  
Rigging frame  
Mounting Plate, Rear A  
Mounting Plate, Front A  
When attaching the Mounting Plates  
to the center positions  
When attaching the Mounting  
Plates forward positions  
Mounting Plate attaching position  
Mounting Plate attaching position  
Attach the casters, of which specifications are as follows, as the Rigging Frames leg. Casters and caster  
mounting bolts are required by users.  
Caster Specification  
Wheel size:  
Top plate overall size: 95 mm x 95 mm  
100 mm or more  
Bolt hole spacing: 71 mm x 71 mm  
Attaching bolt size: M10  
Loaded mass:  
With stopper  
Total mass (mass of rigging frame + mass of speaker) x 50% or more per caster  
18  
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