Martin Audio MA4.2s Manuel utilisateur

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™)

applications

!Live sound reinforcement

!Fixed installations

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: [email protected]

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.

electronics

www.martin-audio.com

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

8ΩLOAD 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 mΩ

SLEW RATE 20 V/µs

INPUTS

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 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 4Ω/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)

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