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MA1400
High performance power amplifier
features
! Superior sonic performance
! Increased output current capacity
! Versatile input connections
! Removable dust filters
! Advanced protection circuits
! Multiple gain selection
! Soft Start
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: info@martin-audio.com
All information is Copyright © 2003 Martin Audio Ltd.
The MA1400 is one of a versatile range of professional power
amplifiers designed to meet the increasing demands of both the
rental and installation markets whilst remaining cost efficient.
By harnessing a conventional toroidal transformer power supply
with the latest semiconductor technology and a proprietary
copper cooling system the MA1400 amplifier offers outstanding
sonic performance, power and reliability in a shallow (359mm)
2U package.
electronics
www.martin-audio.com
overall dimensions
technical specifications
MAX OUTPUT POWER
EIA AT 1 kHz AND 1% THD
8 PER CHANNEL 425 W
4 PER CHANNEL 700 W
2 PER CHANNEL 1050 W
8 BRIDGED 1400 W
4 BRIDGED 2100 W
MAX OUTPUT VOLTAGE
8Ω LOAD 58 Vrms
PEAK VOLTAGE, NO LOAD 91 V
DISTORTION
THD 20Hz – 20kHz AND 1 W TO FULL POWER 0.07%
THD AT 1kHz AND –1dB UNDER CLIP 0.01%
DIM AT –3dB UNDER CLIP 0.008%
HUM AND NOISE <-105dB
CHANNEL SEPARATION @ 10kHz 70dB
OUTPUT IMPEDANCE 30 mΩ
SLEW RATE 45 V/µs
INPUTS
GAIN SELECTABLE (dB) 20, 23, 26, 29, 32, 35, 38, 41
IMPEDANCE 20 kΩ (balanced) 10 kΩ single ended
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 + 3 pin Phoenix
CLIP LIMITERS On/off each channel
POWER
OPERATION VOLTAGE 150-260 V
SOFT START Yes
PEAK INRUSH CURRENT 20 A
FULL OUTPUT POWER 230 V
MIN START VOLTAGE 180 V
115V OPTION Yes
CURRENT DRAW AT 4Ω/230V
QUIESCENT POWER (NO LOAD) 0.75 A rms
1/8 OF FULL POWER (-9dB) 5.2 A
1/3 OF FULL POWER (-5dB) 8.0 A
AT FULL POWER (0dB) @ 1kHz 1%THD 14.0 A
DIMENSIONS
WIDTH 483mm (19ins)
HEIGHT 88mm (3.5ins) 2U
DEPTH (incl. handles) 359mm (14.1ins)
WEIGHT 17kg (37lbs)