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A4 Series

4-Channel Amplifiers

The A4 Series, four channel power amplifiers offer very affordable sound quality while still providing professional features such as balanced XLR inputs and Speakon TM speaker connectors. The rugged chassis and compact size (2U / 3.5" high, 10" deep) makes for easier shipping and installation in rack equipment. The A4 Series amplifiers are especially suited for monitor and fixed application in clubs, restaurants, stores, churches or hotels where a low cost, compact multi-channel amplifier is required.
 
 
Features

 Very light weight, 250W/per channel, only 12Kg.

 High power density. Four channel models built with 2U rack high chassis with only 10" depth.

 Compact size is excellent for fixed installation applications.

 Powerful, high current, low noise toroidal transformer.

 Built-in high pass filter 35 Hz, prevents woofer speaker over excursion.

 Balanced XLR input and SpeakonTM output.

 Quiet, auto-variable speed fan, forced air cooling system.

 Detent volume controls.

 4 Independent Channels or Dual Bridge Mode (Hi-Power) operation.
 
 
Specifications
  Condition A-4104 A-4154 A-4254 A-4404
Output
4 ohm
100W x 4
150W x 4
250W x 4
400W x 4
Output
8 ohm
60W x4
90W x 4
150W x 4
250W x 4
Output
8 ohm bridged
200W x 2
300W x 2
500W x 2
800W x 2
Distortion
At rated power
<0.05%
Freq. response
At rated power
20Hz~40kHz , -1dB
Input sensitivity
At rated power
0.775 Vrms
IM distortion
60Hz and 7kHz
<0.1%
Input impedance
Each leg to GND
10k ohm
Damping factor
1 kHz@8 ohm
>200
Crosstalk
<-100 dB
Noise
At rated power
<-105 dB
Slew rate
20V/uS
30V/uS
30V/uS
40V/uS
Voltage gain
31dB
32dB
33dB
34dB
Power supply
600W
900W
1400W
2400W
Max current draw
AC115V(230V)
6(3)A
8(4)A
10(5)A
20(10)A
I/O connector
XLR x 4, SPEAKONTM x 4
Status indicator
Signal, Clip, Protect, ON
Controls
4 Level controls, 2 Mode selectors, enable switch
Protection
Turn-on speaker mute, Short, DC, Over temperature
Dimension
2U Rack
3 1/2"(H) x 19"(W) x 10"(D)
15"(D)
Cooling
Two variable speed fans
Weight
lbs (kg)
22 (8.5)
24 (10)
28 (12)
40 (18)
 
 All specifications subject to change without prior notice
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