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MA2.8s
Light weight, high performance power amplifier
ELECTRONICS

The MA2.8s is one of a range of power amplifiers that have been designed to combine reliability and high power with sonic excellence. Utilising an advanced switch mode power supply, the amplifier is characterised by a very high power-to-weight ratio in a lightweight, 2U package. The innovative technology at the heart of the MA2.8s enables it to set new standards in terms of sonic accuracy, impact and clarity.

FEATURES

  • Switch mode power supply
    Superior sonic performance
    Light weight
    Advanced protection circuits
    Efficient copper cooling system
    Minimum load switches (MLS™)

APPLICATIONS

  • Live sound reinforcement
    Fixed installations

Click pic for larger image
TECHNICAL SPECIFICATIONS
MAX OUTPUT POWER  
EIA AT 1kHz AND 1% THD  
MLS in 0dB position  
8 PER CHANNEL 1100 W
4 PER CHANNEL 1500 W
2 PER CHANNEL 1700 W
8 BRIDGED 3000 W
4 BRIDGED 3100 W
MAX OUTPUT VOLTAGE  
8Ω LOAD 94 Vrms
PEAK VOLTAGE, NO LOAD 135 V
DISTORTION  
THD 20Hz – 20kHz AND I W TO FULL POWER 0.08%
THD AT 1kHz AND –1dB UNDER CLIP 0.03%
DIM AT –3dB UNDER CLIP
0.02%
HUM AND NOISE <-105dB
CHANNEL SEPARATION @ 10kHz 80dB
OUTPUT IMPEDANCE 60 mΩ
SLEW RATE 20 V/µs
INPUT  
GAIN SELECTABLE (dB) 20, 23, 26, 29, 32, 35, 38, 41
IMPEDANCE 10 kΩ
COMMON MODE REJECTION 50dB
FRONT PANEL
  
GAIN CONTROLS 31 position detent
INDICATORS: PROTECT Yellow LED
INDICATORS: CLIP Red LED
INDICATORS: SIGNAL PRESENT (-40dB) Green LED
REAR PANEL  
INPUT CONNECTORS Neutrik Combo
LINK CONNECTORS XLR-Male
CLIP LIMITERS On/off each channel
MLS SWITCH 0, -2, -4, -5dB
LINK - SWITCH CH. A-B
POWER  
OPERATION VOLTAGE 130-270V
SOFT START Yes
PEAK INRUSH CURRENT 5 A
FULL OUTPUT POWER 180 - 260 V
MIN START VOLTAGE 175 V
115V OPTION Yes
CURRENT DRAW AT 4Ω/230V  
QUIESCENT POWER (NO LOAD) 1 A rms
1/8 OF FULL POWER (-9dB) 5 A rms
1/3 OF FULL POWER (-5dB) 11 A rms
AT FULL POWER (0dB) @ 1kHz 1%THD 19 A rms
DIMENSIONS  
WIDTH 483mm (19ins)
HEIGHT 88mm (3.5ins) 2U
DEPTH (incl. handles) 393mm (15.5ins)
WEIGHT 10kg (22lbs)
 
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All material © 2010. Copyright Martin Audio Ltd. Subject to change without notice. Martin Audio Ltd. Reg. No. 4824341
Martin Audio and the Martin Audio Logo are trademarks of Martin Audio Ltd and are registered in the United Kingdom, United States and other countries.

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