TOA A-912MK2 UL 8-Channel Modular Mixer and Amplifier, 120W

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. The 120W A-912MK2 is engineered for high performance with wide frequency response, very low noise and distortion, and excellent output regulation.

The A-912MK2 Mixer Power Amplifier controls and mixes up to eight independent input signals. The Mixer Power Amplifier delivers up to 120 watts of output power. Optional plug-in modules are available for use with mixer power amplifier to provide versatility for a wide range of operating applications.

The A-912MK2 features eight module slots that allow you to easily customize your system by 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.

Outputs include transformer isolated 25V and 70V plus a direct 8Ω 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 8-channel mixer / amplifier for paging, background / foreground music distribution, and music / messaging on hold
• Wide frequency response, very low noise and distortion, and excellent output regulation
• 120 Watts
• 8 slots accept any combination of TOA plug-in modules
• 25V, 70V, and 8Ω transformer-isolated speaker outputs

Specifications

• Type: 8-channel mixer power amplifier
• Power Requirement: AC mains, 120V, 60Hz
• Power Consumption: 180W
• Output Power: 120W RMS
• Power Band Width: (D) 20 〜 20,000Hz, 0.5% THD, (T) 50 〜 20,000Hz, 0.5% THD
• Frequency Response:
  • (D) 20 〜 20,000Hz, ±1dB
  • (T) 20 〜 15,000Hz, ±1dB, (T) 20 〜 20,000Hz, +1dB, -3dB
  • T.H.D: 0.02% @ 1kHz, rated output
• Inputs:
  • Eight Input Ports : Each port accepts any input modules.
  • One Bridging Input / Output
  • Input Sensitivity / Impedance Input Port #1 to #8 : 100mV / 10kΩ
  • Bridging Input / Output : 100mV / 3.3kΩ
• Preamp OUT / Power Amp IN: 1000mV into 600Ω / 1000mV, 10kΩ
• Outputs:
  • (T) = Transformer: 8Ω, 25 and 70 volts, balanced, Main
  • (D)=Direct Main: 4Ω, unbalanced
  • Aux : 10kΩ, 1V
• Output Regulation (1kHz):
  • (D) Less than 0.5dB, no load to full load
  • (T) Less than 1.0dB, no load to full load
• S / N Ratio (Band Pass 20 〜 20,000Hz) Tone defeat switch on; Master volume min: 90dB
• Master volume max: 77dB
• Power amplifier only: 105dB
• Tone Controls: Bass : ±10dB @ 100Hz, Treble : ±10dB @ 10kHz
• Controls: 8 Input gain control, 1 Master gain control, 1 Bass control, 1 Treble control, 1 Power ON/OFF switch, 1 Tone defeat switch, 1 Low-Cut switch (60Hz, 6dB / octave)
• Indicators: 1 Power LED, 1 Protect LED, 1 Signal LED, 1 Normal LED, 1 Peak LED
• Protection: Self-protection, with AC fuse (inside)
• Connectors: Input No.1 to No.8 : Card-edge connector, Bridging, Mixer preamp. output, Power amp. input, Aux output: RCA phono jack
• Output: Screw-terminal strip
• Mute, Remote VR: Screw-terminal strip
• AC outlet: 3-pin grounding type
• AC power cord/plug: SJT, 3-prong type
• Temperature Range: -10℃ 〜 +60℃ (12°F 〜 140°F)
• Finish: Black
• Dimensions (W×H×D): 420 (16.54") × 99.1 (3.90") × 358mm (14.09")
• Weight: 11.4kgs (25.13lbs)