Specifications

14 TECHNICAL SPECIFICATIONS
MA4.2
INPUT IMPEDANCE 20kohms (balanced) 10kohms single ended
GAIN SELECT SWITCH 41dB (I/P sens 0.775V), 32dB (I/P sens 2.26V)
CMRR@1kHz >50dB
OUTPUT IMPEDANCE@1kHz < 0.06 ohms
POWER BANDWIDTH 5Hz - 20kHz
SLEW RATE 20V/us
HUM/NOISE <-95dB
CHANNEL SEPARATION 1kHz - 80dB
10kHz - 70dB
MAINS OPERATING VOLTAGE 120 - 270 (minimum start voltage 190) full
output power maintained 180 - 280V.
Optional (65 - 135V) operation.
PROTECTION DC, High temperature, Turn on, VHF, Over and
under voltage, Clip Limiters.
AFS (Adaptive Fuse Saver), Short circuit.
DISTORTION
THD 20Hz - 20kHz and 1W - 1000W 4 ohms 0.1%
THD at 1kHz and 2000W 4 ohms 0.04%
DIM 30 at 500W 4 ohms 0.04%
CCIF (13 and 14kHz) at 500W 4 ohms 0.04%
SMPTE (60Hz and 7kHz) at 500W 4 ohms 0.04%
POWER MATRIX
MLS SWITCH SETTING
LOAD CONFIGURATION -5dB -4dB -2dB 0dB
16 ohms Stereo (2 channel) 220W 260W 410W 650W
8 ohms Stereo (2 channel) 430W 520W 820W 1300W
4 ohms Stereo (2 channel) 830W 1000W 1600W 2100W
2 ohms Stereo (2 channel) 1660W 2000W 2200W 2400W[1]
3050W[2] 3200W[2]
16 ohms Bridged mono 860W 1040W 1640W 2600W
8 ohms Bridged mono 1660W 2000W 3200W 4200W
4 ohms Bridged mono 3320W 4000W 4400W 4800W[1]
[1] = Component tolerance dependent.
[2] = Continuous power, one channel driven or peak power both channels driven.
Thermal protection may occur at high continuous power.
Power in watts (E1A 1kHz, 1% THD).
DIMENSIONS (W) 483mm x (H) 88mm x (D) 347mm
(W) 19ins x (H) 3.5ins x (D) 13.7ins
WEIGHT 10Kg (22lbs)
SHIPPING DIMENSIONS (W) 560mm x (H) 190mm x (D) 500mm
(W) 22.4ins x (H) 7.6ins x (D) 20ins
SHIPPING WEIGHT 12Kg (26.4lbs)
Martin Audio – MA4.2 Power Amplifier
ENGLISH
25
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