Martin Audio MA2.8s プリント
MA2.8s
Light weight, high performance power amplifier
features
!
Switch mode power supply
!
Superior sonic performance
!
Light weight
!
Advanced protection circuits
!
Efficient copper cooling system
!
Minimum load switches (MLS™)
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.
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 MA2.8s is one of a range of power amplifiers that have been
designed to combine reliability and high power with sonic
excellence. Utilising an advanced switch mode power supply, the
amplifier is characterised by a very high power-to-weight ratio in
a lightweight, 2U package. The innovative technology at the
heart of the MA2.8s enables it to set new standards in terms of
sonic accuracy, impact and clarity.
designed to combine reliability and high power with sonic
excellence. Utilising an advanced switch mode power supply, the
amplifier is characterised by a very high power-to-weight ratio in
a lightweight, 2U package. The innovative technology at the
heart of the MA2.8s enables it to set new standards in terms of
sonic accuracy, impact and clarity.
electronics
www.martin-audio.com
overall dimensions
technical specifications
MAX OUTPUT POWER
EIA AT 1 kHz AND 1% THD
MLS in 0dB position
8 PER CHANNEL
EIA AT 1 kHz AND 1% THD
MLS in 0dB position
8 PER CHANNEL
1100 W
4 PER CHANNEL
1500 W
2 PER CHANNEL
1700 W
8 BRIDGED
3000 W
4 BRIDGED
3100 W
MAX OUTPUT VOLTAGE
8Ω LOAD
8Ω LOAD
94 Vrms
PEAK VOLTAGE, NO LOAD
135 V
DISTORTION
THD 20Hz – 20kHz AND 1 W TO FULL POWER 0.08%
THD AT 1kHz AND –1dB UNDER CLIP
THD 20Hz – 20kHz AND 1 W TO FULL POWER 0.08%
THD AT 1kHz AND –1dB UNDER CLIP
0.03%
DIM AT –3dB UNDER CLIP
0.02%
HUM AND NOISE
<-105dB
CHANNEL SEPARATION @ 10kHz
80dB
OUTPUT IMPEDANCE
60 mΩ
SLEW RATE
20 V/µs
INPUTS
GAIN SELECTABLE (dB)
GAIN SELECTABLE (dB)
20, 23, 26, 29, 32, 35, 38, 41
IMPEDANCE
10 kΩ
COMMON MODE REJECTION
50dB
FRONT PANEL
GAIN CONTROLS
GAIN CONTROLS
31 position detent
INDICATORS: PROTECT
Yellow LED
INDICATORS: CLIP
Red LED
INDICATORS: SIGNAL PRESENT (-40dB)
Green LED
REAR PANEL
INPUT CONNECTORS
INPUT CONNECTORS
Neutrik Combo
LINK CONNECTOR
XLR-male
CLIP LIMITERS
On/off each channel
MLS SWITCH
0, -2, -4, -5dB
LINK-SWITH
CH. A-B
POWER
OPERATION VOLTAGE
OPERATION VOLTAGE
130-270V
SOFT START
Yes
PEAK INRUSH CURRENT
5 A
FULL OUTPUT POWER
180-260 V
MIN START VOLTAGE
175 V
115V OPTION
Yes
CURRENT DRAW AT 4Ω/230V
QUIESCENT POWER (NO LOAD)
QUIESCENT POWER (NO LOAD)
1 A rms
1/8 OF FULL POWER (-9dB)
5 A rms
1/3 OF FULL POWER (-5dB)
11 A rms
AT FULL POWER (0dB) @ 1kHz 1%THD
19 A rms
DIMENSIONS
WIDTH
WIDTH
483mm (19ins)
HEIGHT
88mm (3.5ins) 2U
DEPTH (incl.handles)
393mm (15.5ins)
WEIGHT
10kg (22lbs)