TOA a-903mk2 User Manual
Specifications
Type
Output Power
Power Band Width
Frequency Response
Total Hamonic Distortion
Inputs
Input Sensitivity/Impedance
Preamp OUT/Power Amp IN
Outputs (T)=Transformer
(D)=Direct
Output Regulation (1 kHz)
Signal to Noise Ratio
(Band Pass 20 ~20,000 Hz)
Tone Defeat SW ON
Tone Controls
Controls
Indicators
Protection
Connectors
Power Consumption
Temperature Range
Dimensions (W) x (H) x (D)
Weight
Color
Standard Accessories
Other Features
A-903MK2
A-906MK2
A-912MK2
8-channel mixer power amplifier
30W RMS
60W RMS
120WRMS
(D) 20 ~20,000 Hz, 0.5% THD
(T) 50 ~20,000 Hz, 0.5% THD
(D) 20 ~20,000 Hz, ± 1 dB
(T) 20 ~15,000 Hz, ± 1 dB
(T) 20 ~15,000 Hz, ± 1 dB
(T) 20 ~20,000 Hz, +1 dB, -3 dB
0.02% at 1 kHz, rated output
Eight Input Ports : Each port accepts any input module.
One Bridging Input/Output
One Bridging Input/Output
Input Port #1 to #8 : 100 mV/10k ohms
Bridging Input/Output: 100 mV/3.3k ohms
1000 mV into 600 ohms/1000 mV, 10k ohms
Main (T): 4 ohms, 25
& 70 volts, balanced
Main (D): 8 ohms,
unbalanced
Aux : 10k ohms, 1V
Main (T) : 8 ohms, 25 & 70 volts, balanced
Main (D) : 4 ohms, unbalanced ,
Main (D) : 4 ohms, unbalanced ,
Aux : 10k ohms, 1V
(D) Less than 0.5 dB, no load to full load
(T) Less than 1.0 dB, no load to full load
(T) Less than 1.0 dB, no load to full load
Master volume min : 90 dB
Master volume max : 77 dB
Power amplifier only : 105 dB
Master volume max : 77 dB
Power amplifier only : 105 dB
Bass : ± 10 dB at 100 Hz, Treble : ± 10 dB at 10 kHz
8 Input gain controls
1 Master gain control
1 Bass tone control
1 Treble control
1 Power ON/OFF switch
1 Tone defeat switch
1 Low-Cut switch (60 Hz, 6 dB/octave)
1 Power LED, 1 Protect LED, 1 Signal LED, 1 Normal LED, 1 Peak LED
Self-protection, with AC fuse (inside)
Input No.1 to No.8
Bridging, Mixer preamp. output
Bridging, Mixer preamp. output
Power amp. input, Aux output
Output
Mute, Remote VR
AC power cord/plug
AC outlet
Mute, Remote VR
AC power cord/plug
AC outlet
Card-edge connector
RCA phono jack
Screw-terminal strip
Screw-terminal strip
SJT, 3-prong type
3-pin grounding type
Screw-terminal strip
SJT, 3-prong type
3-pin grounding type
60 W
-10 °C ~ +60 "C [12°F~140°F]
100W
180W
420 x 99.1 x 318 mm
[16.5 X 3 . 9 X 12.5 in.]
7.8 kg [17.2 Ib.]
420 x 99.1 x 358 mm
9.6kg [21.2lb.]
[16.5 X 3 . 9 X 14.1 in.]
11. 4 kg [25.1 Ib.]
Black
4 Volume control covers (YA-920)
Output disconnected for approx. 5 seconds after switching power on.
* Specifications are subject to change without notice.
–10–