Martin Audio MA4.8Q プリント
M
MA
A4
4..8
8Q
Q
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: +44 (0)1494 535312 Facsimile: +44 (0)1494 438669
E-mail: info@martin-audio.com
All information is Copyright © 2006 Martin Audio Ltd.
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 © 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.
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
PER CHANNEL
100 Vrms
DISTORTION
THD 20Hz – 20kHz FOR 1W
THD 20Hz – 20kHz FOR 1W
0.1%
THD AT 1kHz AND –1dB BELOW CLIP 0.05%
SIGNAL TO NOISE RATIO
SIGNAL TO NOISE RATIO
112dBA
CHANNEL SEPARATION @ 1kHz
70dB
FREQUENCY RESPONSE +0/-3dB
6.8Hz – 34kHz
INPUTS
GAIN SELECTABLE (dB)
GAIN SELECTABLE (dB)
23, 26, 29, 32, 35, 38, 41, 44
DEFAULT GAIN
35dB
FRONT PANEL
GAIN CONTROLS
GAIN CONTROLS
21 position detent
INDICATORS: (common)
NomadLink® Network connected
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
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
INPUT CONNECTORS
3-pin Phoenix, electronically balanced
OUTPUT CONNECTORS
Barrier strip 2-pole screw terminals
POWER
OPERATION VOLTAGE
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
WIDTH
483mm (19ins)
HEIGHT
88mm (3.5ins) 2U
DEPTH
343mm (13.5ins)
WEIGHT
12kg (26.4lbs)
electronics