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 900
Series
Modular Mixer/Amplifiers
NEW TOA Amplifier Products:
9000 Series Digital Matrix
Mixer/Amplifiers
DA Series Multi-channel
Amplifiers
 The
Industry Standard
THE TOA 900 SERIES are widely recognized as the industry standard in
installed sound system amplification. When reliability and performance are
critical – such as in paging and music distribution for airport, hospital,
and industrial sound systems – you can count on the TOA 900 Series to
perform consistently, day-in and day-out.
High Performance
The A-903MK2 (30 W), A-906MK2 (60 W) and A-912MK2 (120 W) Modular
Mixer/Amplifiers are engineered for high performance with wide frequency
response, very low noise and distortion, and excellent output regulation.
Modular Design
Eight module slots allow you to easily configure custom configurations
choosing from over fifty TOA plug-in modules with an extensive array of
features and connector types. You can increase the input capacity by
connecting a second mixer or mixer/amplifier to the rear-panel Bridge In/Out
jack.
Versatile Features
Outputs include transformer isolated 25 V, 70 V and 8 ohm (A-903MK2: 4
ohm) plus a direct low-impedance mode if non-transformer operation is
required. Multiple paging priorities are easily configured using optional
mute-type modules activated by external switch-closure or mute-send modules.
Pre-Out/Power-In jacks allow connection of external signal processing
between the mixer and amplifier sections. Other features include protection
circuitry, auxiliary output, bass/treble controls and remote master volume
terminals. The 900 Series Mixer/Amplifiers are UL and cUL Listed and carry a
five year warranty.
FEATURES
Modular Eight Channel
Mixer/Amplifiers for paging, background/foreground music distribution
and music/messaging-on-hold.
Proven TOA Quality and
Reliability
Engineered for High Performance with
wide frequency response, very low noise and distortion, and excellent
output regulation.
Three Models: A-903MK2 (30 W),
A-906MK2 (60 W), A-912MK2 (120 W)
Eight Module Slots accept any
combination of TOA plug-in modules for custom system configurations.
25 V, 70 V and 8 Ohm
Transformer-Isolated Speaker Outputs with screw terminal connector and
protective cover plate (A-903MK2: 4 ohm).
Direct Low-Impedance Output Mode
bypasses output transformer.
Dual Mute Bus permits
multiple levels of paging priority using optional mute-type modules.
External Mute Terminals for
activating mute function with external switch closure.
Remote Master Volume Terminals
for control with an external 10k ohm linear-taper potentiometer.
Individual Channel and Master
Volume Controls.
Bass/Treble Tone Controls
with tone defeat switch.
Low Cut Switch to limit low
frequency response.
Auxiliary Output for
connecting an external mixer or recording device.
Insert Jacks for connecting
external signal processing.
Bridging Input/Output for
input expansion or recording device.
Normal, Clip, Power, Protect, and
Signal Indicators provide unit status.
Rear Panel AC Convenience Outlet
for powering external equipment
Turn-On Delay disconnects
output during power-up.
Over-current and Thermal
Protection Circuitry prevents potential damage from overload,
short-circuit and overheating.
Volume Control Security Knobs
Included (4)
Optional Rack-Mount Kit,
MB-25B
UL / cUL Listed
Five Year Warranty
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TOA Electronics, Inc.,
601 Gateway Blvd, #300,
So. San Francisco, CA 94080
TEL: (650) 452-1200 (800) 733-7088
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