- Description
Details
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 (60W) and A-912MK2 (120W) 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
Features
- Modular Eight Channel Mixer Amplifier
- Engineered for High Performance
- Eight Module Slots
- 25 V, 70 V and 8 Ohm Transformer-Isolated Speaker Outputs
- Direct Low-Impedance Output Mode
- Dual Mute Bus
- External Mute Terminals
- Remote Master Volume
- Individual Channel and Master
- Volume Controls
- Bass/Treble Tone Controls
- Auxiliary Output
- Turn-On Delay
- Volume Control Security Knobs
- Optional Rack-Mount Kit (MB-25B)
- Specification
Type 8-channel modular mixer/amplifier Power Requirement AC mains, 120 V, 60 Hz Power Consumption 180 W Output Power 120 W Power Bandwidth (D) 20 - 20k Hz, 0.5% THD
(T) 50 - 20k Hz, 0.5% THDFrequency Response (D) 20 - 20k Hz, ±1 dB
(T) 20 - 15k Hz, ±1 dB
(T) 20 - 20k Hz, +1 dB / -3 dBTotal Harmonic Distortion 0.02% at 1k Hz, rated output Inputs 8 input ports: every port accepts any input module 1 Bridging Input/Output Input Sensitivity & Impedance Input Port #1 to #8: 100 mV/ 10 k Ohm
Bridging Input/ Output: 100 mV/ 3.3 k OhmsPre-amp. Out/ Power Amp. In 1 V, 600 Ohm / 1 V, 10k Ohm Outputs (T)=Transformer (D)=Direct Main (T): 8 Ohm, 25 V & 70 V, balanced
Main (D): 4 Ohm, unbalanced
Aux: 1 V, 10k OhmOutput Regulation(1k Hz) (D): Less than 0.5 dB, no load to full load
(T): Less than 1.0 dB, no load to full loadDynamic Range
(Band Pass: 20 - 20k Hz
with Tone Controls centered)Master volume set to min.: 90 dB
Master volume set to max.: 77 dB
Power amplifier only: 105 dBTone Controls Bass: ±10 dB at 100 Hz
Treble: ±10 dB at 10k HzIndicators 1 Power LED, 1 Protect LED, 1 Signal LED, 1 Normal LED, 1 Peak LED Temperature Range 12° F to 140° F (-10° C to +60° C) Dimensions (H x W x D) 3.9" (99.1 mm) x 16.54" (420 mm) x 12.52" (318 mm) Weight 25.1 lbs (11.4 kg) - Documents
- Reviews
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