USER'S MANUAL NEW 900 SERIES IN-WALL MIXER POWER AMPLIFIERS W-906A W-912A 900 SERIES WALL AMPLIFIER POWER POWER PEAK AC FUSE OUTPUT FUSE ON OFF 250V 3A COMPRESSOR 250V 6A OFF EQUALIZER OUT HIGH PASS OFF IN 63 125 250 500 ON 1k 2k OFF 4k ON 8k 16k 12 12 6 6 0 0 6 6 12 12 63 INPUT 1 MAX LOW PASS 125 250 500 INPUT 2 1k 2k 4k INPUT 3 8k 16k INPUT 4 INPUT 5 INPUT 6 MASTER Thank you for purchasing TOA's New 900 series In-wall Mixer Power Amplifier.
TABLE OF CONTENTS 1. IMPORTANT SAFETY INSTRUCTIONS .................................................... 3 2. SAFETY PRECAUTIONS ................................................................................. 4 3. GENERAL DESCRIPTION .............................................................................. 6 4. FEATURES ........................................................................................................... 6 5. NOMENCLATURE AND FUNCTIONS Front ......................................
1. IMPORTANT SAFETY INSTRUCTIONS • • • • • • • • • • • • Read these instructions. Keep these instructions. Heed all warnings. Follow all instructions. Do not use this apparatus near water. Clean only with dry cloth. Do not block any ventilation openings. Install in accordance with the manufacturer's instructions. Do not install near any heat sources such as radiators, heat registers, stoves, or other apparatus (including amplifiers) that produce heat.
2. 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.
CAUTION Indicates a potentially hazardous situation which, if mishandled, could result in moderate or minor personal injury, and/or property damage. ATTENTION Indique une situation risquant d'entraîner des blessures moyennement graves ou mineures, et/ou des dommages matériels. • Do not place 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.
3. GENERAL DESCRIPTION The TOA W-906A and W-912A In-Wall Mixer Power Amplifiers control and mix up to six independent input signals plus two inputs with use of WE-2 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.
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6. SERVICING Failure Should amplifier fail, contact your nearest TOA authorized contractor or service center. 7. OPERATION Be sure to complete all connections before operation. 7.1. Basic Operation Procedure Step 1. Press the power switch to turn on the power. The power indicator lights. The amplifier comes into operation about 5 seconds after the power has been switched on. Step 2. Adjust the individual input and master volume controls for the optimum level.
8. VOLUME CONTROL COVER ATTACHMENT To protect the input volume control from accidental operation, it is recommended to replace the control knob with the supplied volume control cover. Step 1. After adjusting the input volume control, remove its knob. Step 2. Attach the supplied volume control cover in place of the knob. 2 Volume control cover YA-910 (accessory) 1 Input volume control knob Note The unit comes with 3 volume control covers as standard accessories.
. SPECIFICATIONS Model No. Type Output Power Power Bandwidth Frequency Response Total Harmonic Distortion Inputs Input Sensitivity/Impedance Outputs Output Regulation (1 kHz) Signal to Noise Ratio (Band Pass: 20 Hz – 20 kHz) Compression Equalization Filters Controls Indicators Protection Connectors Power Source Power Consumption (1/3 Non-Clip Maximum Power) Color Dimensions Weight Other Features W-906A W-912A Wall mounting 6-channel mixer power amplifier 60 W RMS 120 W RMS (D): 20 Hz – 20 kHz, 0.
• Accessories Volume control cover YA-910 ................... 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 for M3 ...................................... 4 Tapping screw 3 x 8 .................................. 4 Inch screw .........................................
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