Martin Audio MA6.8Q User Manual

MMAA66..88QQ

High power amplifier

features

 Uncompromised sound quality
 Integrated CAT-5 based monitoring and

control system

 Patented Class TD Topology
 Regulated Switch Mode PSU
 Voltage and Current Limiters
 Over-Temperature and Fuse Protection
 Four Discrete Channels

applications

 Churches
 Theatres
 Clubs
 Theme Parks
 Arenas
 Stadiums

Century Point, Halifax Road, Cressex Business Park,
High Wycombe, Buckinghamshire HP12 3SL, England.
Telephone: [phone] Facsimile: [phone]
E-mail: [e-mail]
All information is Copyright © 2007 Martin Audio Ltd.

Housed in a convenient 2U package, the MA6.8Q 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 MA6.8Q 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 650 W
8Ω PER CHANNEL 1200 W
4Ω PER CHANNEL 1700 W
Hi-Z: 70/100V 1600 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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