MA4.2s

Light weight, high performance power amplifier

features

!Switch mode power supply

!Superior sonic performance

!Light weight

!Advanced protection circuits

!Efficient copper cooling system

!Minimum load switches (MLS™)

electronics

applications

!Live sound reinforcement

!Fixed installations

The MA4.2s 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 MA4.2s enables it to set new standards in terms of sonic accuracy, impact and clarity.

overall dimensions

technical specifications

MAX OUTPUT POWER

 

 

 

 

 

 

 

 

 

EIA AT 1 kHz AND 1% THD

 

 

 

 

 

 

 

 

 

MLS in 0dB position

 

 

 

 

 

 

 

 

 

8 PER CHANNEL

1300 W

 

4 PER CHANNEL

2300 W

 

2 PER CHANNEL

2900 W

 

8 BRIDGED

4600 W

 

4 BRIDGED

5800 W

 

MAX OUTPUT VOLTAGE

 

 

 

 

 

 

 

 

 

8LOAD

102 Vrms

 

PEAK VOLTAGE, NO LOAD

145 V

 

DISTORTION

 

 

 

 

 

 

 

 

 

THD 20Hz – 20kHz AND 1 W TO FULL POWER

0.1%

 

 

 

 

 

 

 

 

THD AT 1kHz AND –1dB UNDER CLIP

0.04%

 

 

 

 

 

 

 

 

DIM AT –3dB UNDER CLIP

0.04%

 

 

 

 

 

 

 

 

HUM AND NOISE

<-105dB

 

CHANNEL SEPARATION @ 10kHz

80dB

 

OUTPUT IMPEDANCE

60 m

 

SLEW RATE

20 V/µs

 

INPUTS

 

 

 

 

 

 

 

 

 

GAIN SELECTABLE (dB)

20, 23, 26, 29, 32, 35, 38, 41

 

IMPEDANCE

10 k

 

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 CONNECTOR

XLR-male

 

CLIP LIMITERS

On/off each channel

 

MLS SWITCH

0, -2, -4, -5dB

 

LINK-SWITH

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 4/230V

 

 

 

 

 

 

 

 

 

QUIESCENT POWER (NO LOAD)

0.6 A rms

 

1/8 OF FULL POWER (-9dB)

6 A rms

 

1/3 OF FULL POWER (-5dB)

14 A rms

 

AT FULL POWER (0dB) @ 1kHz 1%THD

26 A rms

 

DIMENSIONS

 

 

 

 

 

 

 

 

 

WIDTH

483mm (19ins)

 

HEIGHT

88mm (3.5ins) 2U

 

DEPTH (incl. handles)

393mm (15.5ins)

 

WEIGHT

10kg (22lbs)

 

Century Point, Halifax Road, Cressex Business Park,

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

High Wycombe, Buckinghamshire HP12 3SL, England.

 

 

 

 

 

 

 

 

 

Telephone: +44 (0)1494 535312 Facsimile: +44 (0)1494 438669

 

 

 

 

 

 

 

 

 

E-mail: info@martin-audio.com

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

All information is Copyright © 2003 Martin Audio Ltd.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

www.martin-audio.com

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Martin Audio MA4.2s technical specifications Features, Applications, Overall dimensions Technical specifications

MA4.2s specifications

The Martin Audio MA4.2s is a powerful four-channel amplifier that sets a new standard in sound amplification technology. Designed to deliver high-quality audio in various environments, the MA4.2s combines efficiency, flexibility, and outstanding sound performance, making it the suitable choice for professional audio setups ranging from touring to fixed installations.

One of the main features of the MA4.2s is its impressive power output. With a continuous output of 2,500 watts at 4 ohms, this amplifier provides ample power for driving multiple speaker systems. The four independent channels allow for versatile configurations, accommodating a wide array of speaker deployments. Whether for large concerts, corporate events, or venues requiring multiple zones, the MA4.2s can meet the demands of any professional audio engineer.

The MA4.2s boasts advanced technology that enhances its functionality. It features a highly efficient Class D amplification, which ensures lower power consumption and reduced heat generation. This not only contributes to the amplifier's durability but also allows for extended periods of use without the concern of overheating. The built-in processing capabilities, including DSP (Digital Signal Processing), offer extensive control over EQ, limiting, and delay settings. This provides users the ability to tailor the audio output precisely to the acoustic characteristics of the venue.

Another standout characteristic of the MA4.2s is its networked control capabilities. Integrated with CobraNet and Dante protocols, the amplifier allows for seamless audio distribution over a standard Ethernet network. This greatly simplifies system design and management, enabling remote monitoring and control from a computer or compatible device. In addition, its compatible software provides users with powerful tools to analyze performance metrics and make adjustments on the fly, ensuring optimal sound quality.

The physical design of the MA4.2s features a rugged chassis built to endure the rigors of the road, while its lightweight construction facilitates easy transport and installation. The amplifier includes a comprehensive set of connectivity options, including XLR inputs and speakON outputs, ensuring it integrates effortlessly within existing systems.

In conclusion, the Martin Audio MA4.2s is a robust yet versatile amplifier that merges power, efficiency, and advanced features, making it an excellent choice for professionals in the audio industry. Whether used in a live sound scenario or a permanent installation, the MA4.2s guarantees exceptional audio fidelity, reliability, and ease of use.