OPERATING INSTRUCTIONS
LINE ARRAY SPEAKERS
RIGGING FRAME
RIGGING SUPPORT BRACKET
TILT JOINT BRACKET
CLUSTER BRACKET
SR-C8L
SR-C8S
SR-C15B
SR-RF8
SR-SB8
SR-TP8
SR-CL8
Note that casters must be prepared separately.
Thank you for purchasing TOA Line Array Speaker.
Please carefully follow the instructions in this manual to ensure long, trouble-free use of your equipment.
TABLE OF CONTENTS
2
1. SAFETY PRECAUTIONS ............................................................................................... 3
2. GENERAL DESCRIPTION ............................................................................................. 5
3. FEATURES .......................................................................................................................... 5
4. INSTALLATION PRECAUTIONS ................................................................................. 5
5. DIMENSIONAL DIAGRAMS
5.1. Speaker Systems
5.1.1. SR-C8L Line array speaker ................................................................................... 6
5.1.2. SR-C8S Line array speaker .................................................................................. 6
5.2. Sub-Woofer Speaker System
5.2.1. SR-C15B Line array speaker ................................................................................ 7
5.3. Frame and Brackets
5.3.1. SR-RF8 Rigging frame .......................................................................................... 7
5.3.2. SR-SB8 Rigging support bracket .......................................................................... 8
5.3.3. SR-TP8 Tilt joint bracket ....................................................................................... 8
5.3.4. SR-CL8 Cluster bracket ........................................................................................ 8
6. BI-AMPLIFIER AND SINGLE-AMPLIFIER OPERATIONS
6.1. Bi-Amplifier Operation ...................................................................................................... 9
6.2. Single-Amplifier Operation ............................................................................................... 9
7. SWITCHING TO SINGLE-AMPLIFIER OPERATION MODE ............................ 10
8. DIGITAL PROCESSOR SETTINGS
8.1. SR-C8L and SR-C8S Systems ....................................................................................... 11
8.2. Combined SR-C8L or SR-C8S and SR-C15B Systems ................................................. 12
9. FLYING SYSTEMS USING THE SR-RF8 RIGGING FRAME
9.1. Flying System Outline .................................................................................................... 13
9.2. Assembling the SR-RF8 Rigging Frame ........................................................................ 15
9.3. Connecting the Rigging Frame to the Speaker .............................................................. 16
9.4. Connection Between Speakers ...................................................................................... 17
9.5. About the Flying Installations ......................................................................................... 18
10.
INSTALLING THE FLYING SYSTEM USING THE SR-CL8 CLUSTER BRACKET
10.1. Flying System Outline .................................................................................................. 19
10.2. Vertical Flying Installation ............................................................................................. 19
10.3. Horizontal Flying ........................................................................................................... 21
11. SPEAKER STACKING
11.1. Stack System Outline .................................................................................................... 23
11.2. Assembling the SR-RF8 Rigging Frame ....................................................................... 24
11.3. Connecting the Rigging Frame to the Speaker ............................................................. 25
11.4. Connections Between Speakers ................................................................................... 25
11.5. About Stacking ............................................................................................................. 26
12. USING THE SR-SB8 RIGGING SUPPORT BRACKET ...................................... 27
12.1. Level Adjuster Installation ............................................................................................ 27
12.2. Rigging Support Bracket Installation ............................................................................ 27
12.3. Frequent Attachment and Detachment of the Rigging Support Bracket ...................... 28
12.4. Adjust the Height With a Level Adjuster to Prevent Unstable Installation .................... 28
13. TILTING THE SPEAKER DOWNWARD .................................................................. 29
14. SPECIFICATIONS
14.1. SR-C8L and SR-C8S .................................................................................................... 30
14.2. SR-C15B ....................................................................................................................... 30
14.3. SR-RF8 ......................................................................................................................... 31
14.4. SR-SB8 ......................................................................................................................... 31
14.5. SR-TP8.......................................................................................................................... 31
14.6. SR-CL8 ......................................................................................................................... 31
1. SAFETY PRECAUTIONS
3
When Installing the Unit
• Avoid installing or mounting the unit in unstable
locations, such as on a rickety table or a slanted
surface. Doing so may result in the unit falling
down and causing personal injury and/or property
damage.
• Refer all installation work to the dealer from whom
the speaker was purchased. Installation for flying
requires extensive technical knowledge and
experience. The speaker may fall off if incorrectly
installed, resulting in possible personal injury.
• Flying precautions.
Be sure to follow the instructions below. Otherwise,
the suspension wires or belts may be off or snap
and the speaker may fall off, causing personal
injury.
· Check to confirm that the suspension wires and
belts are strong enough to
· The connectors of the suspension wires and belts
must be securely linked with those of the
speaker.
· All parts and components (such as enclosures,
metal pieces, and screws) must be free from any
deformation, crack, and corrosion.
· Be sure to use screws supplied with the optional
flying hardware when installing the speaker using
such hardware.
• 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.
• Since the unit is designed for in-door use, do not
install it outdoors. If installed outdoors, the aging of
parts causes the unit to fall off, resulting in personal
injury. Also, when it gets wet with rain, there is a
danger of electric shock.
• Owing to the unit's size and weight, be sure that at
least two persons are available to install the unit.
Failure to do so could result in personal injury.
When Installing the Unit
• Do not use other methods than specified to mount
the bracket. Extreme force is applied to the unit
and the unit could fall off, possibly resulting in
personal injuries.
• Use nuts and bolts that are appropriate for the
ceiling's or wall's material and structure. Failure to
do so may cause the unit to fall, resulting in
material damage and possible personal injury.
• Tighten each nut and bolt securely. Ensure that the
bracket has no loose joints after installation to
prevent accidents that could result in personal
injury.
• Use the specified mounting bracket in combination.
Doing otherwise may cause the unit or component
to fall off, resulting in personal injury.
• Do not mount the unit in locations exposed to
constant vibration. The mounting bracket can be
damaged by excessive vibration, potentially
causing the unit to fall, which could result in
personal injury.
• Do not install the unit in indoor swimming pools or
such locations where corrosion may occur easily.
The parts deteriorate if corroded, causing the unit
to fall, which could result in personal injury.
• Be sure to read this safety instructions in this section carefully in prior to use.
• 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.
WARNING
Indicates a potentially hazardous situation which, if mishandled, could
result in death or serious personal injury.
Indicates a potentially hazardous situation which, if mishandled, could
result in moderate or minor injury, and/or property damage.
WARNING
CAUTION
4
When the Unit is in Use
• Do not place heavy objects on the unit as this may
cause it to fall or break which may result in
personal injury and/or property damage. In
addition, the object itself may fall off and cause
injury and/or damage.
• Do not operate the unit for an extended period of
time with the sound distorting. Doing so may cause
the connected speakers to heat, resulting in a fire.
• 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.
• To avoid risks, warn others to stay away from the
speaker or not to lean against it. Otherwise people
may trip over a Rigging Support Bracket or the
speaker may fall down, causing personal injury.
• 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 the
unit that could cause it to fall, possibly causing
personal injury.
CAUTION
2. GENERAL DESCRIPTION
3. FEATURES
4. INSTALLATION PRECAUTIONS
5
TOA's lineup of line array speakers employs TOA's unique wave front control technology to create a sound
field that offers clear reproduction and uniform sound dispersion.
This lineup includes versions offering either 5 degrees or 15 degrees of angled vertical directivity, as well as
sub-woofer configured types.
The use of optional support brackets allows the line array speakers to be used in many applications as
permanent sound system installations.
• TOA's unique wave front control technology creates a uniform sound distribution field with interference-free
high frequency output, realizing high-clarity acoustic characteristics and long sound transmission
capabilities.
• The SR-C8L is a two-way speaker mounting a high-power 20 cm woofer and two compression drivers, and
featuring a 5 degree angle of vertical directivity and 110 degrees of horizontal. It is ideal for long distance
applications and can be powered by either one or two amplifiers.
• The SR-C8S is a two-way speaker mounting a high-power 20 cm woofer and two compression drivers, and
featuring a 15 degree angle of vertical directivity and 110 degrees of horizontal. It is ideal for shorter
distance applications and can be powered by either one or two amplifiers.
• By combining the long-distance SR-8L and short-distance SR-8S, a line array speaker system can be built
to support a variety of applications.
• The SR-C15B sub-woofer employs a large-diameter 38 cm woofer with high power handling capabilities,
and is designed to be used in conjunction with the SR-C8L or SR-C8S line array speakers.
• The line array speakers are designed to allow easy rear access for maintenance work.
• Overlap angles between individual speakers can be set in 1 degree units between 0 and 5 degrees when
constructing the line array speaker, making it possible to flexibly control speaker directivity.
• The line array speaker can be stacked or suspended with the additional use of the SR-RF8 Rigging Frame.
Since this speaker system is designed exclusively for indoor use, be sure to install it only in locations isolated
from weather and temperature extremes.
Also, to prevent equipment malfunctions, do not install the speaker in locations exposed to both high
temperatures and high humidity, such as indoor swimming pool facilities.
5. DIMENSIONAL DIAGRAMS
6
5.1. Speaker Systems
5.1.1. SR-C8L Line array speaker
5.1.2. SR-C8S Line array speaker
5°
(Rear view)
526.6 [20.73"]
470 [18.5"]
Unit: mm
296 [11.65"]
(Front view) (Left side view)
(Rear view)
526.6 [20.73"]
470 [18.5"]
293 [11.54"]
259.6 [10.22"]
(Right side view)
Unit: mm
294 [11.57"]
15°
293 [11.53"]
258.8 [10.19"]
(Front view)(Left side view)
(Right side view)
7
5.3. Frame and Brackets
5.3.1. SR-RF8 Rigging frame
5.2. Sub-Woofer Speaker System
5.2.1. SR-C15B Line array speaker
(Rear view)
526.6 [20.73"]
470 [18.5"]
540 [21.26"]
594.8 [23.42"]
Unit: mm
550 [21.65"]
25 [0.98"]
15-ø20 [ø0.79"]
(Left side view)
93 [3.66"]
36 [1.42"]
95 [3.74"]
71 [2.8"]
95 [3.74"]
6 [0.24"]
(Front view)(Left side view)
71 [2.8"]
377 [14.84"]
510 [20.08"]
(Top view)
498 [19.61"]
16-M10
(For caster mounting)
690 [27.17"]
595 [23.43"]
4.5 [0.18"]
167 [6.58"]
105 [4.13"]
(Right side view)
(Right side view)
Unit: mm
85 [3.35"]
155.5 [6.12"]
14 [0.55"]
6.4 [0.25"]
(Front view)
50 [1.97"]
50 [1.97"]
(Bottom view)
8
5.3.4 SR-CL8 Cluster bracket
5.3.3. SR-TP8 Tilt joint bracket
5.3.2 SR-SB8 Rigging support bracket
350 [13.78"]
275.8 [10.86"]
Unit: mm
135°
270 [10.63"]
(Top view)
208 [8.19"]
52 [2.05"]
6.4 [0.25"]
517.5 [20.37"]
2-ø10.5 [ø0.41"]
(Front view)
294 [11.57"]
150 [5.91"]
40 [1.57"]
20 [0.79"]
Unit: mm
14 [0.55"]
120.6 [4.75"]
13 [0.51"]
15 [0.59"]
18 [0.71"]
25 [0.98"]
15-ø13 [ø0.51"]
20 [0.79"]
45 [1.77"]
Unit: mm
37
[1.46"]
310 [12.2"]
4.5 [0.18"]
40
[1.57"]
4-ø10.5 [ø0.41"]
6. BI-AMPLIFIER AND SINGLE-AMPLIFIER OPERATIONS
9
The SR-C8 series speakers are supplied from the factory set up for bi-amplifier operation. However, this
default specification can be switched to single-amplifier operation mode by simply changing the position of an
internal connector. (Refer to page 10. "Switching to Single-Amplifier Operation Mode")
6.1. Bi-Amplifier Operation
6.1.1. System diagram
6.2. Single-Amplifier Operation
6.2.1. System diagram
6.1.2. Internal wiring diagram
6.2.2. Internal wiring diagram
Mixer/
preamplifier
Screw terminal
LOW
LOW
HIGH
HIGH
Input terminal panel
Digital
processor
Neutrik NL4MP connector
1
21
2
LOW
HIGH
Power amplifier
21
LOW
HIGH
Woofer
Tweeter
SR-C8L/C8S
Woofer
1
2
Tweeter
Mixer/
preamplifier
Screw terminal
INPUT
INPUT
THROUGH
THROUGH
Digital
processor
Neutrik NL4MP connector
1
2
1
2
Power amplifier
1
21
2
Passive
network
SR-C8L/C8S
Passive
network
LOW
HIGH
Woofer
Tweeter
Woofer
Tweeter
Input terminal panel
7. SWITCHING TO SINGLE-AMPLIFIER OPERATION MODE
10
To switch the speaker's bi-amplifier operation mode to single-amplifier operation, remove the speaker's rear
input panel and change the speaker's internal wiring.
Switching Power Modes
Step 1. Remove the four screws securing the input terminal panel and pull out the panel.
Step 2. Pull out a short length of the wiring connected to the back side of the input panel.
Step 3. Disconnect and switch the two pairs of connected connectors so that the two marked and unmarked
connector halves match up.
Step 4. Reinstall the input terminal panel using the four removed screws.
Step 5. Attach the supplied seals to the input terminal panel to change the indication.
Changing input terminal panel indication
5
Input indication seal for single-amplifier operation
(accessory)
Rating seal for single-amplifier
operation (accessory)
Panel mounting screws
1, 4
Input terminal panel
2
Switching connectors
3
Mark
8. DIGITAL PROCESSOR SETTINGS
11
Set the digital processor's parameters as follows:
8.1.2. Single-amplifier operation
8.1. SR-C8L and SR-C8S Systems
8.1.1. Bi-amplifier operation
Channel
Pre-stage Filter
SR-C8
LOW
SR-C8
HIGH
The “Gain” indications are merely provided as guidelines and may need be adjusted depending on the system
configuration.
Gain
(dB)
0
–9.0
Polarity
Normal
(Positive)
Normal
(Positive)
TYPE Freq. (Hz)
PEQ 1.6k –4.0 1.414
LPF (12 dB) 2.0k 0.707
HPF (12 dB) 60 1.000
PEQ 800 –5.0 3.450
HPF (12 dB) 2.0k 0.707
PEQ 1.45k 6.0 4.318
PEQ 2.9k 10.0 2.997
High Shelving 10k 7.0
All Pass 4.5k 2.016
All Pass 7.6k 2.016
All Pass 11.5k 2.215
All Pass 12.0k 2.016
All Pass 14.0k 1.512
All Pass 17.0k 4.938
Filter
Gain (dB) Q
Delay
(msec)
0.667
0
Channel
SR-C8
Gain
(dB)
0
Polarity
Normal
(Positive)
Filter
TYPE Freq. (Hz)
HPF (12 dB) 60 1.000
PEQ 280 3.5 4.318
PEQ 800 2.0 3.450
PEQ 2.5k
PEQ 2.65k 5.0 2.145
PEQ 5.3k 2.5 1.204
PEQ 9.0k 6.0 1.707
Gain (dB) Q
11. 5
1.044
Delay
(msec)
12
8.2.2. Single-amplifier operation
8.2. Combined SR-C8L or SR-C8S and SR-C15B Systems
8.2.1. Bi-amplifier operation
Channel
Pre-stage Filter
SR-C8
LOW
SR-C8
HIGH
“Gains” are merely given as a guideline and may need be adjusted depending on the system configuration.
Gain
(dB)
6.0
0
9.0
Polarity
Normal
(Positive)
Normal
(Positive)
Normal
(Positive)
TYPE Freq. (Hz)
PEQ 1.6k 4.0 1.414
HPF (12 dB) 35 2.053
LPF (6 dB) 50
LPF (12 dB) 100 1.432
PEQ 60 3.0 2.648
LPF (12 dB) 2.0k 0.707
HPF (12 dB) 100
PEQ 800 5.0 3.450
HPF (12 dB) 2.0k 0.707
PEQ 1.45k 6.0 4.318
PEQ 2.9k 10.0 2.997
High Shelving 10k 7.0
All Pass 4.5k 2.016
All Pass 7.6k 2.016
All Pass 11.5k 2.215
All Pass 12.0k 2.016
All Pass 14.0k 1.512
All Pass 17.0k 4.938
Filter
Gain (dB) Q
1.000
Delay
(msec)
1.896SR-C15B
0.667
0
Channel
SR-C15B 6.0
SR-C8 0
The “Gain” indications are merely provided as guidelines and may need be adjusted depending on the system
configuration.
Gain
(dB)
Polarity
Normal
(Positive)
Normal
(Positive)
TYPE Freq. (Hz)
HPF (12 dB) 35 2.053
LPF (6 dB) 50
LPF (12 dB) 100 1.432
PEQ 60 3.0 2.648
HPF (12 dB) 100
PEQ 280 3.5 4.318
PEQ 800 2.0 3.450
PEQ 2.5k 11.5 1.044
PEQ 2.65k 5.0 2.145
PEQ 5.3k 2.5 1.204
PEQ 9.0k 1.7076.0
Filter
Gain (dB) Q
Delay
(msec)
1.229
1.000
0
9. FLYING SYSTEMS USING THE SR-RF8 RIGGING FRAME
13
9.1. Flying System Outline
Use the SR-RF8 Rigging Frame for flying applications. Up to twelve line array speakers can be simultaneously
connected per frame, however the SR-C15B is calculated as two units.
Adjust the vertical directivity angle according to the installation environment. For applications that specify longdistance sound transmission, link the long-distance SR-C8L speakers together.
Shown below is a basic flying system.
The line array speaker's vertical directivity angle is 5 degrees for the SR-C8L and 15 degrees for the SR-C8S.
[SR-C8L] [SR-C8S]
Rigging frame
SR-C15B
SR-C8L
SR-C8S
5 degrees
15 degrees
14
This flying system consists of four SR-C8L units, two SR-C8S units and one SR-C15B unit. To enhance longdistance sound transmission capabilities, the four SR-C8Ls are linked together at overlap angles of four, two
and one degree. As a result of this, the system's overall vertical directivity angle is 43 degrees.
Overlap angles can be set depending on how the speakers are linked together.
The horizontal directivity angle is 110 degrees.
As can be seen from the above figure, the overlap angle is equal to the rear opening angle between speakers.
Example: To adjust the sound radiation overlap angle to five degrees, set the rear opening angle between the
speakers to five degrees.
If the speakers are linked flat without no space between them, there will be no sound radiation
overlap. For overlap angle settings, refer to "Connection Between Speakers" on page 17.
SR-C15B
4-degree speaker opening angle
2-degree speaker opening angle
1-degree speaker opening angle
SR-C8S
15degrees
SR-C8L
SR-C8L
Overlap angle
SR-C8L
Overlap angle
SR-C8L
SR-C8S
15degrees
Overlap angle
4degrees
2degrees
1degree
5degrees
5degrees
5degrees
43degrees
15
9.2. Assembling the SR-RF8 Rigging Frame
Assemble the rigging frame referring to the figure below.
Ensure that fixing plates are correctly secured using two bolts (including plain and spring washers) supplied
with the rigging frame for each plate.
Since each fixing plate has its own installation position and orientation, refer to the figure for correct assembly.
Be sure that the forward mounting holes are always used in flying applications.
[Assembled frame]
Rigging frame
SR-RF8
Fixing plate
[Rear B]
Seal
Rear B
Rear Front
Seal
Front B
Fixing plate
[Rear A]
Seal
REAR
RearFront
Seal
FrontRear
FrontRear
R
ea
r B
r
Fro
ntRea
Fro
RearFro
nt B
nt
FrontRear
Fixing plate
* Mount each plate in compliance with the
indication on each corresponding seal.
Seal
Rear A
Front Rear
Seal
Front A
RearFront
Fixing plate
[Front A]
FRONT
[Front B]
REAR
ear
R
ont
Fr
Rear A
RearFront
ar
tRe
A
Fron
Front
FRONT
16
9.3. Connecting the Rigging Frame to the Speaker
Connect the rigging frame to the speaker referring to the figures below.
Confirm the positioning of the horn (SR-C8L and SR-C8S only), then correctly mount the rigging frame to the
speaker by tightening the supplied nuts and bolts from both left and right sides.
When suspending the SR-C15B sub-woofer, be sure to mount it in the uppermost position (i.e. immediately
below the rigging frame).
[Speaker system assembly] [Sub-woofer system assembly]
Connection plate
Connection plate
Connection plate
Connection plate
17
9.4. Connection Between Speakers
Inter-connect speaker sections referring to the figures below.
Ensure that both speakers are securely connected by tightening the supplied nuts and bolts from both left and
right sides.
Since connection holes for setting the overlap angle are provided at the back of the speaker, assemble using
the connection holes matching the required overlap angle. The overlap angle can be set within the range of 0
to 5 degrees in 1 degree units.
Front
Left side connection holes for
overlap angle settings
Right side connection holes
for overlap angle settings
Left side connection
holes for overlap angle settings
Overlap angle
0degree
1degree
2degrees
5degrees
4degrees
3degrees
Right side connection
holes for overlap angle settings
3degrees
4degrees
5degrees
2degrees
1degree
0degree
18
9.5. About the Flying Installations
• Use at least two points on both the left and right sides to suspend
the system vertically.
• Use the suspension points that allow the system to be set for a
desired downward angle. The downward angle increases as the
suspension points are moved rearward.
• Add an anti-swing guy wire as required. However, take care that
the speaker system's weight is not applied to the wire.
Cautions
• Suspension wires and shackles are not supplied with the speaker. Separately prepare and use those
which are strong enough to suspend the speaker system. Further, ensure that the ceiling structure from
which the speaker system is suspended is also robust and capable of supporting the system's total
weight.
• A total of up to 12 line array speakers can be connected per rigging frame. However, the SR-C15B is
calculated as two units. No more than a total of 12 units can be connected.
Center of gravity
Anti-swing guy wire
10. INSTALLING THE FLYING SYSTEM USING THE SR-CL8 CLUSTER BRACKET
19
10.1. Flying System Outline
This flying system uses the SR-CL8 Cluster Bracket. Using the cluster bracket, up to four speakers can be
connected to each other when suspending in vertical or horizontal orientation. Note that the sub-woofer
cannot be installed using the cluster bracket.
10.2. Vertical Flying Installation
10.2.1. Cluster bracket attachment
Attach the cluster brackets to the speaker referring to the figure below. Ensure that they are securely attached
with the supplied nuts and bolts (including plain and spring washers).
Cluster bracket
SR-CL8
20
10.2.2. Vertical flying installation
• Use two points on both the left and right sides to suspend the system vertically.
• Use the suspension points that allow the system to be set for a desired downward angle. The downward
angle increases as the suspension points are moved rearward.
Cautions
• Wires and shackles to be used for suspension are not supplied with the speaker. Separately prepare and
use those which are strong enough to suspend the speaker system. Further, ensure that the ceiling
structure from which the speaker system is suspended is also robust and capable of standing the
system's total weight.
• A total of up to four line array speakers can be connected to each other when using this cluster bracket
for suspension.
Front Front
Suspension using the forward
suspension points
Suspension using the rearward
suspension points
21
• Add an anti-swing guy wire as required. However, take care that the speaker's weight is not applied to the
wire.
10.3. Horizontal Flying
10.3.1. Cluster bracket attachment
Attach the cluster brackets to the leftmost and rightmost of the connected speakers referring to the figure
below. Ensure that they are securely attached with the supplied nuts and bolts (including plain and spring
washers).
Anti-swing guy wire
Cluster bracket
SR-CL8
22
10.3.2. Horizontal Flying Installation
• Use at least two left and right points to suspend the system vertically.
• Use the suspension points that allow the system to be set for a desired downward angle. The downward
angle increases as the suspension points are moved rearward.
• Add an anti-swing guy wire as required. However, take care that the speaker system's weight is not applied
to the wire.
Cautions
• Wires and shackles to be used for suspension are not supplied with the speaker. Separately prepare and
use those which are strong enough to suspend the speaker system. Further, ensure that the ceiling
structure from which the speaker system is suspended is also robust and capable of standing the
system's total weight.
• A total of up to four line array speakers can be connected to each other when using this cluster bracket
for suspension.
Anti-swing guy wire
11. SPEAKER STACKING
23
Mount casters of the following specifications, which function as the feet of the rigging frame. Prepare the
casters and caster mounting bolts separately.
[Caster Specifications]
Diameter: Over 100 mm
Mounting pitch: 71 mm x 71 mm
Mounting bolt (diameter): M10
Mounting plate dimensions: 95 mm x 95 mm
Load-bearing capacity:
Over 50% x total weight (rigging frame weight + speaker weight) per caster
Must be equipped with a stopper.
Recommended model: K52S-100 made by Takigen
11.1. Stack System Outline
It is possible to stack the line array speakers using the SR-RF8 Rigging Frame. Up to eight speakers can be
stacked, noting that each line array speaker is calculated as 1 unit and each SR-C15B sub-woofer as 2 units.
Shown below is a basic stack system. Note that casters must be prepared separately.
SR-C8L
SR-C15B
Rigging support bracket
SR-SB8
Rigging frame
SR-RF8
Casters
(Prepare separately.)
24
11.2. Assembling the SR-RF8 Rigging Frame
Before assembly, first determine whether to set the mounting position of the fixing plate at the center or
forward, taking the stack system's center of gravity into consideration.
Ensure that fixing plates are correctly secured using two bolts (including plain and spring washers) supplied
with the rigging frame for each plate.
Since each fixing plate has its own installation position and orientation, assemble it referring to the figure.
Rigging frame
SR-RF8
Fixing plate
[Rear B]
Seal
Rear B
Rear Front
Seal
Front B
Rear Front
Fixing plate
[Rear A]
REAR
Seal
Seal
RearFront
FrontRear
Rea
r
Front
R
ea
Rea
r B
r
Front
Fron
Rear
t B
Fro
nt
Seal
Rear A
Front Rear
FRONT
Seal
Front A
Front Rear
Fixing plate
[Front A]
*Mount each plate in compliance with the
Fixing plate
indication on its corresponding seal.
[Front B]
When attaching the fixing plate at the center When attaching the fixing plate forward
Attach at the center when the center of
gravity is shifted forward.
Attach forward when the center of
gravity is shifted backward
The center of gravity is
shifted forward.
The center of gravity is
shifted backward.
Front
Fixing plateFixing plate
Front
25
11.3. Connecting the Rigging Frame to the Speaker
Connect the rigging frame to the speaker referring to the following figure.
Correctly connect both units by tightening the supplied nuts and bolts from both the left and right sides.
When using the SR-C15B sub-woofer in the stack system, mount it in the lowermost position (i.e. immediately
above the rigging frame). In this configuration, attach the sub-woofer receptacle pieces to the rigging frame,
as shown in the figure.
11.4. Connections Between Speakers
Refer to page 17; "Connection Between Speakers" of the chapter "Flying Systems Using the SR-RF8 Rigging
Frame."
Speaker system assembly Sub-woofer system assembly
Sub-woofer
receptacle piece
Sub-woofer
receptacle piece
26
11.5. About Stacking
• Separately prepare casters and mounting hardware, which function as the rigging frame's feet.
• When stacked, the overhang of the front or rear portion of the line array speaker cannot extend more than
10 cm beyond the edge of the rigging frame.
Notes
• Up to 8 Line Array Speakers can be stacked. The SR-C15B Sub-woofer is counted as 2 units. No more 8
speakers can be stacked.
• When stacking 6 or more speakers, be sure to use the SR-SB8 Rigging Support Bracket to prevent the
stacked speakers from tipping over. The SR-C15B Sub-woofer is counted as 2 units.
[Stacking Examples]
Allowable overhang range
10cm
[Prohibited Stacking Example]
Overhang portion
Allowable overhang range
10cm
Allowable overhang range
10cm
12. USING THE SR-SB8 RIGGING SUPPORT BRACKET
27
The SR-SB8 Rigging Support Bracket is used to prevent the stacked SR-C8 series line array speakers from
tipping over. Be sure the SR-SB8 is used whenever six or more SR-C8 series speakers are stacked.
Count the SR-C15B sub-woofer as two units when configuring a system.
12.1. Level Adjuster Installation
Mount a level adjuster on each rigging support bracket, referring to the following figure.
Turn each level adjuster to adjust the rigging frame height so that the tip of the adjuster projects about 30 mm
above the support bracket.
12.2. Rigging Support Bracket Installation
Mount the rigging support bracket to the rigging frame, as shown in the figure below. Ensure that all support
brackets are securely mounted using the supplied nuts and bolts.
Step 1. Insert the support bracket into the rigging frame.
Step 2. Secure the support bracket using the supplied bolts.
30mm
Rigging support bracket
Rigging frame
Rigging support bracket
28
12.3. Frequent Attachment and Detachment of the Rigging Support Bracket
Quick release pins are convenient way of quickly attaching and detaching the rigging support bracket.
12.4. Adjust the Height With a Level Adjuster to Prevent Unstable Installation
After the speaker installation location has been determined, adjust the level adjusters until it is confirmed that
the rigging frame is free from any instability. Since the existence of instability could cause the speaker system
to fall down, secure the adjusters correctly.
Notes
• Quick release pins are not supplied with the speaker.
• Prepare quick release pins with a diameter of 3/8 inch (10 mm) and length of 2.5 inches (65 mm) as
required.
Notes
• To avoid risks, warn others to stay away from the speaker or not to lean against it.
• Up to eight line array speakers can be stacked together. However, one SR-C15B sub-woofer is counted
as two units. No more than eight units can be stacked together.
Quick release pins
Rigging support bracket
Quick release pins
13. TILTING THE SPEAKER DOWNWARD
29
[SR-C8S x 1, SR-C8L x 4]
The line array speaker (except the sub-woofer) mounted in the lowermost position can also be tilted another 5
to 15 degrees with the use of the optional SR-TP8 Tilt Joint Bracket. Attach the bracket, as shown in the figure
below.
Representative stacking example using the tilt joint bracket
[SR-C15B x 1, SR-C8S x 1, SR-C8L x 3]
Note
Avoid using the tilt joint bracket for connections between the line array speakers (except the sub-woofer)
or between the sub-woofer and the rigging frame, as well as in flying applications.
[Attachment to the rigging frame] [Attachment to the sub-woofer]
Tilt joint bracket
SR-TP8
Tilt joint bracket
SR-TP8
5degrees
15degrees
5degrees
15degrees
14. SPECIFICATIONS
14.1. SR-C8L and SR-C8S
Model No. SR-C8L SR-C8S
Enclosure Bass-reex type
Power Handling
Capacity
Rated Impedance 16 Ω (single-amp mode)
Sensitivity 98 dB (1 W , 1 m) (single-amp mode)
Frequency Response
Crossover Frequency
Directivity Angle Horizontal: 110°, Vertical: 5° Horizontal: 110°, Vertical: 15°
Speaker Component
Input Connector M5 screw terminal, distance between barriers: 12.2 mm (0.48")
Finish Enclosure: Plywood, black, urethane paint
Dimensions 526.6 (w) x 293 (h) x 296 (d) mm
Weight 17 kg (37.48 lb) 16 kg (35.27 lb)
Accessory M8 connection bolt ...... 4
Option Cluster bracket: SR-CL8
Low frequency:
High frequency:
110°(horizontal) x 5°(vertical)
+ compression driver x 2
(20.73" x 11.54" x 11.65")
Continuous program: 360 W (single-amp mode)
Low: 360 W, High: 180 W (bi-amp mode)
Low: 16 Ω, High : 16 Ω (bi-amp mode)
Low: 95 dB (1 W, 1 m), High: 110 dB (1 W, 1 m) (bi-amp mode)
65 Hz to 20 kHz*
1.6 kHz*
20 cm (8") cone-type
Wave front control horn
and Neutrik NL4MP x 2
Front grille: Punched steel plate, black, paint
Rigging frame: SR-RF8
Tilt joint bracket: SR-TP8
Digital speaker processor: DP-SP3
Low frequency:
High frequency:
+ compression driver x 2
526.6 (w) x 293 (h) x 294 (d) mm
(20.73" x 11.54" x 11.57")
20 cm (8") cone-type
Wave front control horn
110°(horizontal) x 15°(vertical)
* When recommended parameters are applied by the optional digital speaker processor DP-SP3
Note: The design and specications are subject to change without notice for improvement.
14.2. SR-C15B
Enclosure Bass-reex type
Power Handling
Capacity
Rated Impedance 8 Ω
Sensitivity 93 dB (1 W, 1 m)
Frequency Response
Crossover Frequency
Speaker Component 38 cm (15") cone-type
Input Connector M5 screw terminal, distance between barriers: 12.2 mm (0.48")
Finish Enclosure: Plywood, black, urethane paint
Dimensions 526.6 (w) x 594.8 (h) x 550 (d) mm (20.73" x 23.42" x 21.65")
Weight 41 kg (90.39 lb)
Accessory M8 connection bolt ...... 4
Option Rigging frame: SR-RF8
Continuous program: 450 W
40 to 400 Hz*
125 Hz*
and Neutrik NL4MP x 2
Front grille: Punched steel plate, black, paint
Digital speaker processor: DP-SP3
* When recommended parameters are applied by the optional digital speaker processor DP-SP3
Note: The design and specications are subject to change without notice for improvement.
30
14.3. SR-RF8
Applicable Speaker SR-C8L, SR-C8S, SR-C15B
Number of Speakers
to be Mounted
Finish Steel plate, black, paint
Dimensions 510 (w) x 167 (h) x 690 (d) mm (20.08" x 6.58" x 21.17") (excluding bolt)
Weight 18.5 kg (40.78 lb) (including accessories)
Accessory Fixing plate ................................ 4
Option Rigging support bracket: SR-SB8
Note: The design and specifications are subject to change without notice for improvement.
Flying: Max. 12 (SR-C15B is counted as 2 pieces.)
Stacked system: Max. 8 (SR-C15B is counted as 2 pieces.)
Plate mounting bolt (M10) ......... 12
Sub-woofer receptacle piece ..... 2
(absolutely needed when stacking 6 or more speakers)
14.4. SR-SB8
Finish Steel plate, black, paint
Dimensions 517.5 (w) x 208 (h) x 275.8 (d) mm (20.37" x 8.19" x 10.86")
Weight 10 kg (22.05 lb) (total weight of 4 pieces)
Note: The design and specifications are subject to change without notice for improvement.
14.5. SR-TP8
Applicable Speaker SR-C8L, SR-C8S
Variable Angle Range
to be Mounted
Finish Steel plate, black, paint
Weight 1.7 kg (3.75 lb) (1 pair)
Note: The design and specifications are subject to change without notice for improvement.
5 to 15°
14.6. SR-CL8
Applicable Speaker SR-C8L, SR-C8S
Number of Speakers
to be Mounted
Finish Steel plate, black, paint
Weight 1.5 kg (3.31 lb) (1 pair)
Option Mounting bolt ....... 4
Max. 4
Note: The design and specifications are subject to change without notice for improvement.
31
Traceability Information for Europe
Manufacturer:
TOA Corporation
7-2-1, Minatojima-Nakamachi, Chuo-ku, Kobe, Hyogo,
Japan
Authorized representative:
TOA Electronics Europe GmbH
Suederstrasse 282, 20537 Hamburg,
Germany
URL: http://www.toa.jp/
133-01-00149-00
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