The A-912MK2 (120 W) Modular Mixer/Amplifiers is engineered for high performance with wide frequency response, very low noise and distortion, and excellent output regulation. Eight module slots allow you to easily configure custom configurations using 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. Outputs include transformerisolated 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 mutetype 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.
Modular design allows fast and easy custom configurations.Engineered for high performance with wide frequency response, very low noise and distortion, and excellent output regulation.Eight Module Slots accept any combination of TOA plug-in modules for unmatched flexibility.30, 60 or 120 Watts RMS Output Power.Dual Mute Bus permits multiple levels of paging priority using optional mute-type modules.Remote Master Volume controlled with an external 10k ohm linear-taper potentiometer.25 V, 70 V and 4/8 Ohm Speaker Outputs with screw terminal connector and protective cover plate.Protection Circuitry prevents potential damage from overload, short-circuit, DC offset or overheating.Front Panel Features:
Rear Panel Features:
- Individual Channel and Master Volume Controls.
- Bass/Treble Tone Controls with Tone Defeat Switch.
- Low Cut Switch to limit low frequency response.
- Normal, Peak, Power, Protect, and Signal LEDs provide instantly recognizable status indication.
Volume Control Security Covers included (4), model YA-920.Optional Rack-Mount Kit, model MB-25B (2 RU).UL / CSA Listed.Five Year Warranty.Specifications:
- Auxiliary Output for connecting an external mixer or recording device.
- Pre-amp. Out / Power Amp. In Insert Jacks for connecting external signal processors.
- Bridging Input/Output Jack for fast and easy system expansion.
|Type||8-channel modular mixer/amplifier|
|Output Power||120 W RMS|
|Power Bandwidth||(D) 20 - 20k Hz, 0.5% THD; (T) 50 - 20k Hz, 0.5% THD|
|Frequency Response||(D) 20 - 20k Hz, ±1 dB; (T) 20 - 15k Hz, ±1 dB; (T) 20 - 20k Hz, +1 dB / -3 dB|
|Total 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||Bridging Input/Output: 100 mV / 3.3k?|
|Pre-amp. Out/Power Amp. In||1 V, 600 ?/ 1 V, 10k ?|
|Main (T): 8 ?, 25 V & 70 V, balanced|
Main (D): 4 ?, unbalanced
Aux: 1 V, 10k ?
|Output Regulation (1k Hz)||(D): Less than 0.5 dB, no load to full load|
(T): Less than 1.0 dB, no load to full load
|Dynamic 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 dB
|Tone Controls||Bass: ±10 dB at 100 Hz; Treble: ±10 dB at 10k Hz|
|Indicators||Normal, Peak, Power, Protect, and Signal LEDs|
|Protection||Self-protection, with internal AC fuse|
|Power Consumption||180 W|
|Temperature Range||12° F to 140° F (-10° C to +60° C)|
|Dimensions (W x H x D)||16.5" x 3.9" x 14.1" (420 x 99.1 x 358 mm)|
|Weight (without modules)||25.1 lbs (11.4 kg)|
|Other Features||Output connects approx. 5 seconds after switching power on.|
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