Toa W-906A Operating Instructions Manual
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Toa W-906A Operating Instructions Manual

Toa W-906A Operating Instructions Manual

900 series in-wall mixer power amplifier
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See also: User Manual , Manual
NEW 900 SERIES
IN-WALL MIXER POWER AMPLIFIER

TABLE OF CONTENTS

1. GENERAL DESCRIPTION ............................ 2
2. FEATURES .................................................... 2
Front .............................................................. 3
5. SERVICING .................................................... 8
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.
OPERATING INSTRUCTIONS
900 SERIES
WALL AMPLIFIER
POWER
PEAK
POWER
AC FUSE
OUTPUT FUSE
COMPRESSOR
ON
250V 3A
250V 6A
OFF
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
6. OPERATION ................................................ 8
9. BLOCK DIAGRAM .................................... 10
10. SPECIFICATIONS ..................................... 11
Accessories ................................................ 12
W-906A
W-912A

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Summary of Contents for Toa W-906A

  • Page 1: Table Of Contents

    INPUT 4 INPUT 5 INPUT 6 MASTER 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 W-906A W-912A...

  • Page 2: 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.

  • Page 3: Nomenclature And Functions Front

    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.

  • Page 4: Front (Viewed With The Front Cover Removed)

    [Front] (viewed with the front cover removed) POWER AC FUSE OUTPUT FUSE 250V 3A 250V 6A EQUALIZER HIGH PASS LOW PASS INPUT 1 INPUT 2 INPUT 3 17. AC power cord Connects to power source. 18. Speaker output terminals Connects to speakers. 19.

  • Page 5: Installation And Connection

    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.
  • Page 6 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.
  • Page 7 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. •...

  • Page 8: Servicing

    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.

  • Page 9: How To Use Volume Control Cover

    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.

  • Page 10: Output Eq Characteristic

    8. OUTPUT EQ CHARACTERISTIC –2 –4 –6 –8 –10 –12 9. BLOCK DIAGRAM +24V DC Module Input Ports –20dB V (100mV) 10kΩ Master Volume Control Mute Bridging In/Out –20dBV, 3.3kHz 0 dBV = 1 V = approx. 2 dBm High-pass filter Low-pass filter (180Hz,12dB/Oct.) (7kHz,12dB/Oct.)

  • Page 11: Specifications

    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. W-906A Wall mounting 6-channel mixer power amplifier 60 W RMS (D): 20 –...

  • Page 12: Accessories

    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 BX-9F Expanding kit: Volume control cover (black): YA-910...

This manual is also suitable for:

W-912a

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