TOA A-903MK2 UL 8-Channel Modular Mixer and Amplifier, 30W

OUR PART #: A903MK2UL MFR #: A-903MK2 UL

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THE TOA 900 SERIES are widely recognized as the industry standard in installed sound system amplification. ...Read more

TOA A-903MK2 UL 8-Channel Modular Mixer And Amplifier, 30W Image 1
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TOA A-903MK2 UL 8-Channel Modular Mixer And Amplifier, 30W
Our Price: $515.90
List Price: $638.40
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Product Overview

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 A-903MK2 (30W) Modular Mixer/Amplifier is engineered for high performance with wide frequency response, very low noise and distortion, and excellent output regulation.

Outputs include transformer isolated 25V, 70V and 4Ω 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.

The A-903MK2 Mixer Power Amplifier controls and mixes up to eight independent input signals. The Mixer Power Amplifier delivers up to 30 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.

Includes:

  • Volume control Security Knobs (YA-920) x4

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.
  • Eight Module Slots accept any combination of TOA plug-in modules for custom system configurations.
  • 25V, 70V and 4Ω Transformer-Isolated Speaker Outputs with screw terminal connector and protective cover plate
  • 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 10kΩ 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.
  • UL / cUL Listed
  • Five Year Warranty

Specifications:

  • Type: 8-channel mixer power amplifier
  • Power Requirement: AC mains, 120V, 60Hz
  • Power Consumption: 60W
  • Output Power: 30W 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: 4Ω, 25 and 70 volts, balanced, Main
    • (D) = Direct Main: 8Ω, 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°C to +60°C (12°F to 140°F)
  • Finish: Black
  • Dimensions (W×H×D): 420 (16.54") × 99.1 (3.90") × 318mm (12.52")
  • Weight: 7.8kgs (17.20lbs)

WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov.

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