Light weight, high performance power amplifier   

 

The Martin MA2.8s MA Series Power Amplifier 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 Martin MA2.8s MA Series Power Amplifier 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^TM)

 

APPLICATIONS

 

• Live sound reinforcement
• Fixed installations

 

TECHNICAL SPECIFICATIONS Martin MA2.8s MA Series Power Amplifier

MAX OUTPUT POWER            

EIA AT 1kHz AND 1% THD     

MLS in 0dB position    

8 OHMS PER CHANNEL         1100 W

4 OHMS PER CHANNEL         1500 W

2 OHMS PER CHANNEL         1700 W

8 OHMS BRIDGED     3000 W

4 OHMS 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)

 

Martin MA2.8s MA Series Power Amplifier