TOA Electronics W-912A, W-906A User Manual

189.83 Kb

OPERATING INSTRUCTIONS

NEW 900 SERIES

IN-WALL MIXER POWER AMPLIFIER

W-906A

W-912A

900 SERIES

WALL AMPLIFIER

 

 

 

 

 

POWER

PEAK

 

 

 

 

POWER

AC FUSE

OUTPUT FUSE

 

 

 

COMPRESSOR

ON

 

 

 

OFF

250V 3A

 

250V 6A

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

OFF

MAX

EQUALIZER

 

HIGH PASS

LOW PASS

 

 

 

 

OUT

IN

 

OFF

 

ON

OFF

 

ON

 

 

 

 

63

125

250

500

1k

2k

4k

8k

16k

 

 

 

 

12

 

 

 

 

 

 

 

12

 

 

 

 

6

 

 

 

 

 

 

 

6

 

 

 

 

0

 

 

 

 

 

 

 

0

 

 

 

 

6

 

 

 

 

 

 

 

6

 

 

 

 

12

 

 

 

 

 

 

 

12

 

 

 

 

63

125

250

500

1k

2k

4k

8k

16k

 

 

 

 

INPUT 1

INPUT 2

 

INPUT 3

 

INPUT 4

INPUT 5

INPUT 6

MASTER

TABLE OF CONTENTS

 

1. GENERAL DESCRIPTION ............................

2

2. FEATURES ....................................................

2

3. NOMENCLATURE AND FUNCTIONS

 

Front ..............................................................

3

Front (viewed with the front cover removed) ....

4

4. INSTALLATION AND CONNECTION ..........

5

5. SERVICING ....................................................

8

6. OPERATION ................................................

8

7. HOW TO USE VOLUME CONTROL COVER ....

9

8. OUTPUT EQ CHARACTERISTIC .............

10

9. BLOCK DIAGRAM ....................................

10

10. SPECIFICATIONS .....................................

11

Accessories ................................................

12

Please follow the instructions in this manual to obtain the optimum results from this unit. We also recommend that you keep this manual handy for future reference.

1. GENERAL DESCRIPTION

The TOA W-906A and W-912A Mixer Power Amplifiers control and mix up to six independent input signals plus two inputs with use of expanding kit. The W-906A delivers up to 60 W of output power and the W-912A 120 W. Optional accessory modules are available for use with the W-906A and W-912A to provide versatility for a wide range of operating applications. Edge connectors at the bottom of the front panel permit the selection of the TOA plug-in modules: The H-01 series, H-02 series, H-03 series, H-21 and H-22 Microphone Preamplifiers, the E-01 series and E-11 series Mag. Phono Preamplifiers, the X-01 series, X-11 series and X- 21 Auxiliary Preamplifiers for high-level sources, the B-01 series and B-11 series Bridging Transformers for bridging high-impedance lines, the L-01 series Line Matching Transformers for matching 600 Ω lines, I-01 Paging Input for combining with TOA Intercom Systems EXES-1000, EXES-5000 and EX-16, T-01 series Line Outputs for matching 600 Ω lines and the S-01, S-02 and S-03 Tone Signal Generators for generating attention-getting signals and 1 kHz sine wave for testing within the total system. Other features include a muting function. Sources fed to particular input module accessories are muted by short-circuiting at MUTE TERMINALS on the front. To perform this function, Module E-11, X-11 series or B-11 series is required. Using any of the modules H-21, H-22 and X-21 permits the input signal level to be controlled remotely by means of an external potentiometer.

The W-906A and W-912A have a built-in one-octave graphic equalizer with 9 bands to tailor sound system frequency response to room acoustics, reducing feed-back tendencies and improving intelligibility. A built-in compressor circuit is provided to protect the output level from distortion as a result of excessive input and keeps it constant. Compressor's threshold level can be adjusted.

The W-906A and W-912A Mixer Power Amplifiers have output terminals to match 4 or 8 Ω speaker systems, or speaker distribution system may be connected to the 25 or 70 V terminals. User's (blank) space is provided for additional functions to be made by the customers. The expanding kit (optional) may be loaded in this space when the number of input is increased. Protection against tampering is assured by means of a key-locked hinged door. The W-906A and W-912A can be mounted in any four-inch wall with of the BX-9F Flush Mounting Black Box. On-wall mounting is also possible with the BX-9S Surface Mounting Box.

2. FEATURES

6-channel mixer power amplifier

Expandable to 8-input

Output power: 120 W for W-912A, 60 W for W-906A

Wide frequency response: 30 to 20,000 Hz ±1dB

Low distortion and noise

Excellent output regulation

Built-in one-octave equalizer

Built-in compressor

Self-protection circuitry design

Separate output terminals: 4 and 8 Ω, 25 and 70 V

Extra space for customizing

LED pilot light

LED peak indicator

Full range of plug-in modules

Flush and surface mounting

2

3. NOMENCLATURE AND FUNCTIONS

 

 

 

 

 

 

 

 

 

 

[Front]

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

11

 

 

 

 

 

 

900 SERIES

 

 

Equalizer Section

 

 

6

 

 

7

 

8

 

 

 

 

 

 

 

WALL AMPLIFIER

 

 

 

 

 

 

 

 

 

 

 

10

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

12

 

 

 

 

 

 

 

 

 

 

 

5

 

EQUALIZER

 

HIGH PASS

 

LOW PASS

13

 

 

 

 

 

 

 

 

 

 

 

14

 

OUT

IN

 

OFF

 

ON

OFF

ON

 

 

 

 

 

 

 

 

 

 

 

 

63

125

250

500

1k

2k

4k

8k

16k

 

 

 

 

 

POWER

PEAK

 

 

 

12

 

 

 

 

 

 

 

12

1

POWER

AC FUSE

OUTPUT FUSE

 

 

 

COMPRESSOR

 

6

 

 

 

 

 

 

 

6

 

 

 

 

 

 

 

 

 

 

 

 

 

ON

 

 

 

 

6

 

 

 

 

 

 

 

6

 

OFF

 

250V 3A

 

250V 6A

 

 

 

 

 

 

0

 

 

 

 

 

 

 

0

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

OFF MAX

 

 

 

 

 

 

 

 

 

 

 

EQUALIZER

HIGH PASS

LOW PASS

 

 

 

 

 

 

 

 

 

 

 

 

 

 

OUT

IN

OFF

 

ON

OFF

 

ON

 

 

 

 

12

 

 

 

 

 

 

 

12

15

63

125

250

500

1k

2k

4k

8k

16k

 

 

 

16

 

 

 

 

 

 

 

12

 

 

 

 

 

 

 

12

 

 

 

 

 

 

 

 

 

 

 

 

 

12

 

 

 

 

 

 

 

12

 

 

 

 

63

125

250

500

1k

2k

4k

8k

16k

 

6

 

 

 

 

 

 

 

6

 

 

 

 

 

 

 

 

 

 

 

 

 

 

0

 

 

 

 

 

 

 

0

 

 

 

 

 

 

 

 

 

 

 

 

 

 

6

 

 

 

 

 

 

 

6

 

 

 

 

 

 

 

 

 

 

 

 

 

 

63

125

250

500

1k

2k

4k

8k

16k

 

 

 

 

 

 

 

 

 

 

 

 

 

2

INPUT 1

INPUT 2

 

INPUT 3

 

INPUT 4

INPUT 5

INPUT 6

MASTER

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

9

 

 

 

 

 

 

4

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

3

 

Equalizer Section

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1.Power switch

Applies line power. Two-position push button switch for on-off modes.

2.Input volume controls

Adjust gain of input 1 – 6 respectively.

3.Master volume controls

Adjust overall gain of unit.

4.Modules (optional)

Select appropriate modules according to the application.

5.Compressor control (limiter)

Setting the control switch to OFF position bypasses the compressor circuit and turning it clockwise will reduce the limiter level (will limit the output).

6.Equalizer switch

Place this switch in the IN position to activate an equalizer.

7.High-pass filter switch

Place this switch in the ON position to cut off unnecessary low frequency.

8.Low-pass filter switch

Place this switch in the ON position to cut off unnecessary high frequency.

9.Equalizer controls

9 band filters. 12 dB boots and cut at each center frequency.

10.Power indicator

Comes on when power is switched on.

11.Peak indicator

Comes on when the output signal reaches the rated output power level.

12.Output fuse

Prevents excessive current flow. W-906A: 250 V, 6 A W-912A: 250 V, 10 A

13.AC fuse

Prevents excessive current flow. W-906A: 250 V, 3 A W-912A: 250 V, 5 A

14.Blank panel (user's space)

The space of 103 (w) x 63 (h) x 95 (d) mm is provided. An optional expanding kit may be loaded in this space.

15.Equalizer security cover

Prevents inadvertent changes of the equalizer controls set at proper level.

16.Key-locked door

Prevents tampering.

3

[Front] (viewed with the front cover removed)

19

 

 

 

 

 

 

 

 

 

 

 

 

 

20

POWER

AC FUSE

OUTPUT FUSE

 

 

 

COMPRESSOR

 

ON

 

 

 

 

OFF

250V 3A

 

250V 6A

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

OFF

MAX

 

EQUALIZER

 

HIGH PASS

LOW PASS

 

 

 

 

 

OUT

IN

 

OFF

 

ON

OFF

 

ON

 

 

 

 

 

63

125

250

500

1k

2k

4k

8k

16k

 

 

 

 

 

12

 

 

 

 

 

 

 

12

 

 

 

 

 

6

 

 

 

 

 

 

 

6

 

 

 

 

 

0

 

 

 

 

 

 

 

0

 

 

 

 

 

6

 

 

 

 

 

 

 

6

 

 

 

 

 

12

 

 

 

 

 

 

 

12

 

 

 

 

 

63

125

250

500

1k

2k

4k

8k

16k

 

 

 

 

 

INPUT 1

INPUT 2

 

INPUT 3

 

INPUT 4

INPUT 5

INPUT 6

MASTER

 

 

 

 

 

 

 

 

 

 

 

 

 

22

21

 

 

 

 

 

 

 

 

 

 

 

 

23

 

 

 

 

 

 

 

 

 

 

 

 

 

24

18 17

Junction Box

17.

AC power cord

23.

Mute terminal

 

Connects to power source.

 

With modules employing muting function, which

 

 

 

are optionally available, the input signals fed to

18.

Speaker output terminals

 

the modules are muted by short-circuiting at this

 

Connects to speakers.

 

terminal.

19.

Output terminals

24.

Cord clamp

 

Select output impedance with this terminal.

 

Clamps off lead wires from module inputs, mute

 

 

 

terminals and bridging input/output terminals.

20.Low-cut switch

Cuts off unnecessary low frequency.

21.Module input ports

Accept PLUG-IN MODULES which are optionally available. Module selection is determined by application.

22.Bridging input/output

This terminal is used as a mixing bus. Mixing is achieved when the similar terminal of another amplifier is connected to this terminal. The output level taken from this terminal is independent of the all CONTROLS (except INPUT VOLUME CONTROLS) so that the terminal can also be used as recording output. The input impedances

of the equipment to be connected here should be more than 10 kΩ.

4

4. INSTALLATION AND CONNECTION

Installing this amplifier requires the optional back box, which is Model BX-9F for flush mounting in any 4 inch wall and Model BX-9S for surface mounting.

Fix the back box first in installing the amplifier...

Installing Procedure

Step 1. Attach hinges to the back box by means of screws. (The hinges and screws are accessories supplied free of change.)

Step 2. Fix the amplifier to the back box by inserting the amplifier bolts into the hinges as illustrated.

POWER

AC FUSE

OUTPUT FUSE

 

 

 

COMPRESSOR

INPUT 1

INPUT 2

INPUT 3

INPUT 4

INPUT 5

INPUT 6

MASTER

HINGE

M3 x 6 mm (6 pcs)

Amplifier

Back

Box

(main chassis)

BX-9F,

BX-9S

Step 3. Connecting power cable

Be sure to make proper cable connections according to color cording of the power cable.

After connection is completed, insulate sufficiently the jointed sections and put them in a junction box.

Step 4. Attaching the junction box to the back box

From indoor wiring

BLACK

GREEN

WHITE

 

GREEN

WHITE

 

 

BLACK

 

Junction Box

The BX-9F differs from the BX-9S in the way to attach the junction box to the back box.

[BX-9F]

[BX-9S]

+ M3 x 10 screw (4 pcs)

+ M3 x 8 Tapping screw

Nut M3 (4 pcs)

(4 pcs)

 

SPEAKER TERMINAL

Step 5. Connecting the speaker cable

Connect the speaker cable to the speaker terminals on the junction box. Amplifier output impedance may be selected at the output terminals on the front panel.

Class 2 Wiring

may be used.

SPEAKER CORD

5

Step 6. Fixing the amplifier

Fix the amplifier to the back box with screws after connecting the power cable and the speaker cable.

M4 x 10 mm Screw (3 pcs)

POWER

AC FUSE

OUTPUT FUSE

 

 

 

COMPRESSOR

EQUALIZER

HIGH PASS

LOW PASS

 

 

 

INPUT 1

INPUT 2

INPUT 3

INPUT 4

INPUT 5

INPUT 6

MASTER

Step 7. Selecting output impedance

Select appropriate output impedance that matches the speaker to be used. Class 2 wiring may be used.

Since these outputs consist of 8 Ω, 25 V and 70 V via the output transformer (matching transformer) and direct output of 4 Ω, the connecting method differs in each case. See the following diagram.

Note: Impedances indicated below imply total speaker system (load) impedances.

When connecting speakers to any one of the outputs of 8 Ω, 25 V or 70 V (BALANCED TRANSFORMER OUTPUT); connect as illustrated below.

[W-906A]

Change cable connection for required impedance according to the speaker used.

[W-912A]

Change cable connection for required impedance according to the speaker used.

SPEAKER

c b

a

OUTPUT

 

 

OT

70V 25V 8Ω COM IN + 4Ω –

Insert shorting bar between 4 Ω + and OT IN

a8 Ω or

b10.4 Ω (25 V line) or

c83 Ω (70 V line)

SPEAKER

c b a

OUTPUT

OT

Ω –

70V 25V 8Ω COM IN + 4

Insert shorting bar between 4 Ω + and OT IN

a8 Ω or

b5.2 Ω (25 V line) or

c41 Ω (70 V line)

Note

In this case, the LOW-CUT SWITCH should be in "CUT" position. The amplifier is characteristically flat even in the low frequency range. Therefore, in TRANS OUTPUT, the acoustic effect and frequencyresponse characteristics may be altered. In TRANS OUTPUT, cut off unnecessary low frequency to obtain the best acoustic condition.

CUT

LOW-CUT

FLAT

Place the LOW-CUT SWITCH in "CUT" position

When connecting speakers to the 4 Ω, output (UNBALANCED DIRECT OUTPUT); connect as illustrated below.

4 Ω

OT 70V 25V 8Ω COM IN + 4Ω –

SPEAKER OUTPUT

Remove shorting bar

6

Step 8. Input connections

This unit has six INPUT PORTS for plug-in modules. Select the desired modules for each application.

Plug the modules into INPUT PORTS, sliding them between the guide rails, and secure each with two screws.

CAUTION

Modules should no be inserted or removed while the amplifier is turned on.

When not all INPUT PORTS are occupied, cover the vacant PORTS with back panels, and secure them with screws.

PLUG-IN MODULES are provided in the following:

Balanced low impedance microphone preamp. module (with presettable low-cut

H-01, H-21

filter, high-cut filter and gain controls)

 

 

 

Balanced low impedance microphone preamp. module (with presettable low-cut

H-02, H-22

filter, and gain controls)

 

 

 

Unbalanced high impedance microphone preamp. module (with presettable low-

H-03

cut filter, high-cut filter and gain control)

 

 

 

Equalized mag. phono preamp. module (with presettable gain controls)

E-01, E-11

 

 

Unbalanced high impedance auxiliary preamp. module (with presettable gain

X-01, X-11, X-21

control)

 

 

 

Balanced 10 kΩ bridging transformer module

B-01, B-11

 

 

Balanced 600 Ω line matching transformer module

L-01

 

 

Balanced paging input module (with presettable gain control and MUTE Delay)

I-01

 

 

Balanced 600 Ω line output module (with presettable gain control)

T-01

 

 

Signal tone generator module (with presettable output level control)

 

· 1 kHz sine wave

S-01

· Yelp and buzzer

S-02

· One-tone chime and continuous one-tone chime

S-03

 

 

·With H-21, H-22 and X-21 modules employing volume remote control functions, connecting a potentiometer (10 kΩ) to the terminal of any of these modules permits the sound volume to be remotely controlled by means of the connected potentiometer.

·E-11, X-11 and B-11 modules incorporate muting functions. If a switch is connected to MUTE TERMINAL on the rear panel of the amplifier and closed, these input signals can be muted.

·T-01 is used to feed out mixed signals to external equipment.

·T-01 should be inserted only in Input Port 5 or 6. (See the supplied "NEW 900 SERIES MODULES" manual for details.)

Unite these cables to allow free rotation of the amplifier.

Note

Use modules with suffix "S" for standard input port.

7

Input Expander

The optional expanding kit (WE-2) is necessary to increase the number of input. Up to two inputs may be added by loading the expanding kit in the user's space. For details, refer to the instruction manual of the kit.

CAUTION

Installation of optional items should be performed by a qualified service personnel.

Expanding kit WE-2

Modules

Note

When the temperature of heat sink exceeds 105°C, the protection circuit is activated and the output is disconnected from the circuit. The signal automatically begins to be output as the temperature goes down. In such a case, confirm whether or not unit is overloaded or operated on an excessive output.

5. SERVICING

Unpacking

Upon receipt of the amplifier shipment, please incurred for any damage incurred in transit. If damage is found, please notify your local TOA representative and the transportation company immediately.

State date, nature of damage, whether any damage was noticed on the shipping container, prior to unpacking. Please give waybill number of shipping order.

Failure

Should amplifier fail, contact your nearest TOA authorized contractor or service center.

6. OPERATING

When all connections are completed, turn power switch on.

Then, the power indicator is illuminated. Approx. 5 seconds after switching power on, the amplifier comes into operation.

Adjustment of Volume

Adjust the individual input and master volume controls to obtain appropriate output level.

When the peak indicator remains lit, reduce the sound volume to turn it off. If the system is operated with the peak indicator lighting, it downgrades sound quality.

Adjusting graphic equalizer

The one-octave graphic equalizer tailors sound system frequency response to room acoustics, reducing feedback tendencies and improving intelligibility. Characteristic of this equalizer is as per below graph. Adjust it to obtain the desired frequency response by actually hearing the sound or by using pink noise.

To make the adjustment, place the EQ switch in the IN position.

If a control knob is moved toward the plus (+) direction, center frequency is boosted and if toward the minus (–) direction, it is cut. Placing the EQ switch in the OUT position bypasses the equalizer circuit and makes frequency response flat.

Filter

When the HIGH PASS FILTER switch is in the ON position, low frequency is cut. In this event, low frequency below 180 Hz may be cut at a 12 dB/OCTAVE rate. When LOW PASS FILTER switch is in the ON position, high frequency of 7 kHz or higher may be cut at a 12 dB/OCTAVE rate.

To bypass the filter, place the filter in the OFF position.

8

Compressor

If the COMPRESSOR CONTROL switch is set to OFF, it bypasses the compressor circuit. Turn it clockwise to activate the compressor and to adjust the limiting level. Since turing it fully clockwise far too much limits the output level, set the switch at a maximum point that does not cause the peak indicator to light up.

Output

Clip

OFF

 

 

COMPRESSOR

 

 

CONTROL

Rated

 

HALF

 

 

1/2

 

MAX

 

 

Input

Adjusting release time

Compressor release time is set at 2 seconds on the amplifier supplied from the factory. Adjust the release time, if necessary, by means of the release time controls at the rear of the amplifier.

Release time control

VR303

VR302

MIN MAX

VR301

Equalizer printed

 

circuit board

CN302

Output Fuse

Each amplifier has an output fuse to protect the amplifier from short-circuiting at the output or overloading. Check the fuse when speakers connected do not sound even if the meter deflects normally. If the fuse blew, replace with the same type fuse after confirming the following points.

Step 1. Speaker cables are not short-circuited or the load does not exceed the rating specified.

Step 2. Wiring is correctly done at the output terminal board.

7. HOW TO USE VOLUME CONTROL COVER

Step 1. After adjusting the input volume control, remove its knob.

Step 2. Attach the supplied volume control cover to the chassis in place of the knob.

2

Volume control cover YA-910

1

Input volume control cover knob

Note: The unit comes with 3 volume control covers as standard accessories. Ask for the optional one model YA-910 as necessary.

9

8. OUTPUT EQ CHARACTERISTIC

dB +12 +10 +8 +6 +4 +2 0

–2

–4

–6

–8

–10

–12

20

50 100 200

500

1 k

2 k

5 k

10 k 20 k

Hz

9. BLOCK DIAGRAM

 

 

 

 

 

 

+24V DC

 

 

 

 

 

 

 

#1

High-pass filter

Low-pass filter

 

 

 

 

Module

 

 

 

 

(180Hz,12dB/Oct.)

(7kHz,12dB/Oct.)

 

 

OT

 

Input Ports

 

 

Balanced

–20dB V

 

 

 

 

 

 

 

 

 

 

 

 

Transformer

(100mV)

 

 

 

 

 

 

 

 

 

 

 

 

Output

10kΩ

on

 

on

 

 

 

 

 

 

 

8Ω, 25V, 70V

 

 

 

 

 

 

off

 

off

 

 

 

Unbalanced

 

 

 

 

 

Compressor

 

 

 

 

 

 

 

Direct Output

 

 

 

Equalizer

(Limiter)

Thermostat 105°C

4Ω

 

 

 

Out

off

 

 

 

 

 

 

 

Power

 

 

 

 

 

 

In

Amp.

Output

 

 

 

 

 

Low-cut

 

 

Master

 

 

 

Fuse

 

 

 

 

 

(60Hz,6dB/Oct.)

 

#5

 

 

 

 

 

Volume

 

 

 

 

 

 

 

 

 

 

 

 

Control

 

 

 

 

Relay

 

 

 

 

 

 

 

 

 

 

 

EQ

COMP.

Peak

1

Speaker

 

 

 

Indicator

A

Output

 

 

 

 

 

 

 

 

 

 

 

 

Terminal

 

2

Relay

 

 

 

 

 

#6

B

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Equarizer Control

Release Compressor

Protecting Circuit

 

 

 

• Output Muting

 

 

 

63Hz – 16kHz

Time

(Limiter)

 

 

 

• DC Drift

 

 

 

 

 

 

Control

 

 

 

 

 

 

 

 

 

 

 

 

+24V DC

250V

PT

 

 

 

 

 

 

1A

Power

 

Mute

Bridging In/Out

 

Power

 

 

 

 

 

 

Switch

 

 

–20dBV, 3.3kHz

 

Indicator

 

 

 

AC 120V

 

 

 

 

+Vcc

 

 

60Hz

 

 

 

 

 

AC

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Fuse

 

0 dBV = 1 V = approx. 2 dBm

–Vcc

 

 

10

10. SPECIFICATIONS

Model No.

W-906A

 

W-912A

Type

Wall mounting 6-channel mixer power amplifier

 

 

 

 

Output Power

60 W RMS

 

120 W RMS

 

 

 

Power Bandwidth

(D): 20 – 20,000 Hz, 0.5% THD

 

(T): 20 – 20,000 Hz, 0.5% THD

Frequency Response

(D): 30 – 20,000 Hz, ±1 dB

 

(T): 30 – 15,000 Hz, ±1 dB

 

(T): 30 – 20,000 Hz, ±1 dB, – 3 dB

 

 

 

Total Harmonic Distortion

0.02% at 1 kHz, rated output

 

 

 

Inputs

Six input ports: Each port accepts any input module except T-01S.

 

Use T-01S only in port 5 or 6. One bridging input/output.

Input Sensitivity/Impedance

Input ports 1 to 6: 100 mV, 10 kΩ

 

Bridging input/output: 100 mV, 3.3 kΩ

Outputs

(T): 8 Ω, 25 V and 70 V, balanced

 

(D): 4 Ω, unbalanced

Output Regulation (1 kHz)

(D): Less than 0.5 dB, no load to full load.

 

(T): Less than 1.0 dB, no load to full load.

Signal to Noise Ratio

Controls OFF:

90 dB

(Band Pass: 20 – 20,000 Hz)

Master volume Max: 77 dB

 

Equalizer IN:

88 dB

 

Compressor IN:

84 dB

 

 

 

 

Compression

Attack time:

No greater than 2 milliseconds

 

Compression range: 20 dB

 

Release time:

Adjustable 20 – 2,000 milliseconds

 

Distortion:

Less than 1%

 

 

 

Equalization

9-Band ISO One-octave graphic equalizer

 

Center frequencies: 63, 125, 250, 500, 1000, 2000, 4000, 8000, 16000 Hz

 

Equalization range: ±12 dB

 

 

Filters

High-pass filter: 180 Hz, 12 dB/octave

 

Low-pass filter: 7 kHz, 12 dB/octave

 

 

 

Controls

6 Input gain controls, 1 Master gain control, 1 Compression level control,

 

9 Equalizer controls, 1 Power ON/OFF switch, 1 Equalizer ON/OFF switch,

 

1 High-pass filter ON/OFF switch, 1 Low-pass filter ON/OFF switch,

 

1 Low-cut switch (60 Hz, 6 dB/octave, inside)

 

 

 

Indicators

1 LED power indicator, 1LED peak indicator

Protection

Self-protection, with 2 AC fuses (1 inside) and 1 output fuse

 

 

 

 

Connectors

Input 1 to 6:

 

Card-edge connector

 

Output:

 

Screw-terminal strip

 

Bridging input/output: Screw-terminal strip

 

Mute:

 

Screw-terminal strip

 

AC Power cord:

SJT 3-conductor

 

 

 

 

Power Consumption

AC120 V, 60 Hz, 100 W

 

AC120 V, 60 Hz, 180 W

Color

 

Silver

 

 

 

 

Dimensions

Face panel:

412 (w) x 680 (h) x 28 (d) mm

 

BX-9F Back Box: 362 (w) x 628 (h) x 98 (d) mm

 

BX-9S Back Box: 412 (w) x 680 (h) x 98 (d) mm

 

 

 

 

Weight

13.7 kg

 

17.3 kg

 

(without input modules and back box)

(without input modules and back box)

Other Features

Output disconnect for approx. 5 sec after power turned on.

 

Muting Function: Accomplished by input module X-11S, B-11S and E-11S.

 

 

 

 

* Power Bandwidth and Frequency Response are from input port to power amplifier output.

Note: The design and specifications are subject to change without notice for improvement.

11

• Accessories

 

Volume control cover ..........................................

3

Key (for door) ......................................................

2

Lift-off hinge (receptacle) ....................................

2

Machine screw M4 x 10 ......................................

5

Machine screw M3 x 6 ........................................

6

Machine screw M3 x 10 ......................................

4

Flange nut ...........................................................

4

Tapping screw 3 x 8 ............................................

4

Inch screw ...........................................................

4

Indication label ....................................................

1

Instruction manual (W-906A/-912A) ....................

1

Instruction manual (New 900 series modules) ....

1

• Optional products

 

 

 

Flush-mounting (in-wall) back box:

BX-9F

Expanding kit:

WE-2

Surface-mounting (on-wall) back box: BX-9S

Volume control cover (black):

YA-910

133-02-738-9B