TOA Electronics A-903MK2 UL 8-Channel Mixer Power Amplifier

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.

Technical Specifications

Type
8-channel mixer power amplifier
Power Requirement
AC mains, 120 V, 60 Hz
Power Consumption
60 W
Output Power
30 W RMS
Power Band Width
(D) 20 20,000 Hz, 0.5% THD, (T) 50 20,000 Hz, 0.5% THD
Frequency Response
(D) 20 20,000 Hz, -1 dB
(T) 20 15,000 Hz, -1 dB, (T) 20 20,000 Hz, +1 dB, -3 dB
T.H.D
0.02% at 1 kHz, rated output
Inputs
Eight Input Ports : Each port accepts any input modules.
One Bridging Input/Output
Input Sensitivity /Impedance
Input Port #1 to #8 : 100 mV/10 k
Bridging Input/Output : 100 mV/3.3 k
Preamp OUT /Power Amp IN
1000 mV into 600 /1000 mV, 10 k
Outputs(T)=Transformer (D)=Direct
Main (T) : 4 , 25 and 70 volts, balanced, Main (D) : 8 , unbalanced
Aux : 10 k, 1 V
Output Regulation(1kHz)
(D) Less than 0.5 dB, no load to full load
(T) Less than 1.0 dB, no load to full load
S/N Ratio(Band Pass 20 ? 20,000 Hz) Tone defeat switch on
Master volume min : 90 dB
Master volume max : 77 dB
Power amplifier only : 105 dB
Tone Controls
Bass : -10 dB at 100 Hz, Treble : -10 dB at 10 kHz
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 (60 Hz, 6 dB/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 (12F 140F)
Finish
Black
Dimensions(WHD)
420(16.54") - 99.1(3.90") - 318(12.52") mm
Weight
7.8 kg (17.20 lb.)
Accessories
Volume control cover (YA-920)-4