Toa W-912A Manual - Manual (Page 6)

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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. (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 speaker output terminals are designed to match 25 or 70 V line, or 4 or 8 Ω speaker systems.
User’s space (blank) is provided for loading the WE-2 Expanding kit (optional), enabling the number of inputs
to be increased by two. 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 (in-wall) back
box. On-wall mounting is also possible with the BX-9S Surface-mounting (on-wall) back box.
4. 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 Hz to 20 kHz ±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 peak indicator
• Full range of plug-in modules
• Flush and surface mounting