Martin Audio MA4.8Q - Manual

M MA A4 4..8 8Q Q
High power amplifier
features
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Uncompromised sound quality
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Integrated CAT-5 based monitoring and
control system
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Patented Class TD Topology
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Regulated Switch Mode PSU
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Voltage and Current Limiters
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Over-Temperature and Fuse Protection
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Four Discrete Channels
applications
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Churches
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Theatres
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Clubs
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Theme Parks
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Arenas
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Stadiums
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]
All information is Copyright © 2006 Martin Audio Ltd.
Housed in a convenient 2U package, the MA4.8Q 4-channel amplifier
allows for the adjustment of maximum voltage peak, gain adjustment
and has on-board network capability for monitoring and control. With
these features it is now possible to specify identical amplifiers in an
installation and then adjust each output to the very specific requirements
of the speaker system. A typical large-scale system is a combination of
high-powered speakers, full range in-fill speakers, 70/100V ceiling
speakers, with an active speaker management system. With switchable
outputs and on-board network capabilities, the MA4.8Q can be
designed into a complete value engineered system handling all
amplification tasks.
www.martin-audio.com
overall dimensions
technical specifications
MAX OUTPUT POWER Four Channels
16Ω PER CHANNEL 625 W
8Ω PER CHANNEL 1000 W
4Ω PER CHANNEL 1200 W
Hi-Z: 70/100V 900 W
MAX OUTPUT VOLTAGE
PER CHANNEL
100 Vrms
DISTORTION
THD 20Hz – 20kHz FOR 1W
0.1%
THD AT 1kHz AND –1dB BELOW CLIP 0.05%
SIGNAL TO NOISE RATIO
112dBA
CHANNEL SEPARATION @ 1kHz 70dB
FREQUENCY RESPONSE +0/-3dB 6.8Hz – 34kHz
INPUTS
GAIN SELECTABLE (dB)
23, 26, 29, 32, 35, 38, 41, 44
DEFAULT GAIN 35dB
FRONT PANEL
GAIN CONTROLS
21 position detent
INDICATORS: (common)
NomadLink® Network connected
Blue LED
Power Average Limiter Red LED
Power On Green LED
Option Card (on) Yellow LED
FRONT PANEL INDICATORS: (per channel)
Signal present / Hi impedance warning
Green/Red LED
-10dB and –4dB output signal present 2 x Green LED
Voltage Peak Limiter (VPL) clipping Red LED
Current Peak Limiter (CPL) active Orange LED
Very High Frequency (VHF) warning Yellow LED
High Temperature warning Yellow LED
Fault warning 2 x Yellow LED
Mute 2 x Yellow LED
REAR PANEL
INPUT CONNECTORS
3-pin Phoenix, electronically balanced
OUTPUT CONNECTORS Barrier strip 2-pole screw terminals
POWER
OPERATION VOLTAGE
130-265 V / 65-135 V
MINIMUM POWER-UP VOLTAGE 230V / 115V 171V / 85V
POWER AVERAGE LIMITER Yes
SOFT START / INRUSH CURRENT DRAW Yes / max 5A
DIMENSIONS
WIDTH
483mm (19ins)
HEIGHT 88mm (3.5ins) 2U
DEPTH 343mm (13.5ins)
WEIGHT 12kg (26.4lbs)
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