TOA W-912A - Manuals - manualsarea.com

Page 2 - GENERAL DESCRIPTION

2 1. GENERAL DESCRIPTION The TOA W-906A and W-912A Mixer Power Amplifiers control and mix up to six independent input signalsplus two inputs with use of expanding kit. The W-906A delivers up to 60 W of output power and the W-912A120 W. Optional accessory modules are available for use with the W-906A...

Page 3 - NOMENCLATURE AND FUNCTIONS; Input volume controls; Adjust gain of input 1 – 6 respectively.; Master volume controls; Adjust overall gain of unit.; Equalizer controls; Comes on when power is switched on.; Equalizer security cover; Equalizer Section

3 3. NOMENCLATURE AND FUNCTIONS [Front] 1. Power switch A p p l i e s l i n e p o w e r . T w o - p o s i t i o n p u s h b u t t o nswitch 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)...

Page 4 - Connects to power source.; Speaker output terminals; Connects to speakers.; Module input ports; Junction Box

4 [Front] (viewed with the front cover removed) 17. AC power cord Connects to power source. 18. Speaker output terminals Connects to speakers. 19. Output terminals Select output impedance with this terminal. 20. Low-cut switch Cuts off unnecessary low frequency. 21. Module input ports Accept PLUG-IN...

Page 5 - INSTALLATION AND CONNECTION; Installing Procedure; Step 3. Connecting power cable

4. INSTALLATION AND CONNECTION Installing this amplifier requires the optional back box, which is Model BX-9F for flush mounting in any 4 inchwall 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 ...

Page 6 - , 25 V and 70 V via the output transformer (matching transformer) and; Note; • When connecting speakers to the 4; and OT IN; Remove shorting bar

Step 6. Fixing the amplifier Fix the amplifier to the back box with screwsa f t e r c o n n e c t i n g t h e p o w e r c a b l e a n d t h espeaker cable. Step 7. Selecting output impedance Select appropriate output impedance that matches the speaker to be used.Class 2 wiring may be used.Since thes...

Page 7 - Step 8. Input connections; CAUTION

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. • When not all INPUT PORTS are occupied, cover the vacant PORT...

Page 8 - Input Expander; Unpacking; Adjusting graphic equalizer; Modules

8 Input Expander The optional expanding kit (WE-2) is necessary to increasethe number of input. Up to two inputs may be added byloading the expanding kit in the user's space. For details, referto the instruction manual of the kit. Note When the temperature of heat sink exceeds 105°C, the protection ...

Page 9 - Output Fuse; Wiring is correctly done at the output terminal board.; HOW TO USE VOLUME CONTROL COVER; After adjusting the input volume control, remove its knob.

Compressor If the COMPRESSOR CONTROL switch is set toOFF, it bypasses the compressor circuit. Turn itclockwise to activate the compressor and to adjustthe limiting level. Since turing it fully clockwise fartoo much limits the output level, set the switch at am a x i m u m p o i n t t h a t d o e s n...

Page 10 - OUTPUT EQ CHARACTERISTIC

10 9. BLOCK DIAGRAM 8. OUTPUT EQ CHARACTERISTIC 1 A 2 B High-pass filter(180 Hz, 12 dB/Oct.) Low-pass filter(7 kHz, 12 dB/Oct.) EqualizerOut Compressor(Limiter)Control ReleaseTime Equarizer Control63 Hz – 16 kHz Bridging In/Out–20 dBV, 3.3 kHz 0 dBV = 1 V = approx. 2 dBm Mute Compressor(Limiter)off ...