TOA W-912A In-Wall PA Amplifier



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. (Please contact your local TOA dealer for details on TOA plug-in modules.) 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 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.

Type In-Wall Mounting 6 Channel Mixer Power Amplifier
Output Power 120W RMS
Power Bandwidth (D)20 to 20,000 Hz, 0.5% THD
(T)50 to 20,000 Hz, 0.5% THD
Frequency Response (D) 30 to 20,000 Hz ±1 dB
(T) 30 to 15,000 Hz ±1 dB
(T) 30 to 20,000 Hz +1dB, -2 dB
Total Harmonic Distortion 0.02% at 1 kHz, Rated Output
Inputs Six Input Ports ; 100mV / 10kohms
Each port accepts any input module except T-01S.
(Use T-01S only in port #5 or #6)
One Bridging Input/Output ; 100mV / 3.3kohms
Outputs (T) 8 ohms, 25 V & 70 V, Balanced
(D) 4 ohms, Unbalanced
Output Regulation (1kHz) (D) Less Than 0.5 dB, No Load to Full Load
(T) Less Than 1.0 dB, No Load to Full Load
S/N Ratio (Band Pass : 20 to 20,000 Hz
Controls OFF ; 90 dB
Equalizer IN ; 88 dB
Master Volume Max. ;77 dB
Compressor IN ; 84 dB
Compression Attack Time ; No Greater Than 2msec.
Compression Range ; 30 dB
Release Time ; Variable 20msec. to 2 sec
Distortion ; Less Than 1 %
Equalization 9-band One-octave Graphic Equalizer
Center Frequencies ; ISO 63, 125, 250, 500, 1k, 2k, 4k, 8k, 16kHz
Equalization Range ; ±12 dB
Filters High-pass Filter ; 180 Hz, 12 dB / octave
Low-pass Filter ; 7kHz, 12 dB / octave
Indicators 1 LED Power Indicator
1 LED Peak Indicator
Protection Circuitry Built-in with 2 AC Fuse (1 inside) and 1 Output Circuitry
Output Circuitry Protection when Heatsink Temperature Overheats
Connectors Input #1 to #6 ; Card-edge Connector
Output ; Screw-terminal strip
Bridging Input/Output ; Screw-terminal Strip
Mute ; Screw-terminal strip
Power Requirement 120 V AC, 60 Hz
Power Consumption 100 W
User’s Space (Blank Panel) Size (WxHxD) ; 101.6 (4″) x 60.3 (2.4″) x 95.3 (3.8″) mm
Effective Space for Customizing
Optional expanding kit WE-2 may be loaded.
Weight 17.3 kg (38.14 lbs) ; Without Input Modules and Back Box
Color Silver
Accessories Volume Control Cover x 3 pcs
Associated Equipment Plug-in Modules for Input ; M-01S, U-01S, B-01S, L-01S, I-01S
Plug-in Modules for Input with MUTE ; U-11S, U-12S, B-11S, L-11S, M-11S
Plug-in Modules for Input with Remote Volume Control Facility ; M-21S, U-21S
Plug-in Modules for Line Output ; T-01S
Plug-in Modules for Tone Signal ; S-01S, S-02S, S-03S
Volume Control Cover ; YA-910
Expanded Kit ; WE-2
Notes) (D) : Direct Output, (T) : Transformer Output Power Bandwidth and Frequency Response are from input port to power amplifier output.