Specifications

48
MCA 4240 A
MULTI-CHANNEL CONSTANT VOLTAGE (100 V)
POWER AMPLIFIERS
482
132
Power amplifier with
4 independent channels
of 316W each
• 4 output transformers for
constant voltage systems, with
several output sockets
• Frequency response 40Hz-20kHz
• Congurations possible 4x316W
RMS, 2x632W RMS, 1x1264W RMS
• Designed to operate in
emergency conditions
• 2 inputs for each power stage,
one of which has priority over
the other
• Phantom power supply
• Optional card for remote volume
control (MMZ-VRC)
• Remote failure signal control,
which may also command a
recovery module
• Protections: thermal, short
circuit and fuse on each
amplier
• PWM technology with 90%
performance
• 3 rack units
48
4 ZONE PAGING AND CALL FOR
INDIVIDUAL PRIORITY ZONE
Zone 1
Zone 2
ZONE 1
ZONE 2ZONE 3
ZONE 4
Zone 3
MB-T 8004
Microphone base
MMZ 8004S
4 zones preamplifier
Zone 4
Local Paging System
Local Paging System
Local Paging System
Local Paging System
MCA 4240 A
Code 17758
Characteristics Monoblock amplifier with 4 channels 4x316 W RMS
Continuous power 4x316 W RMS at 100V, 50V, 33V or 8 Ohm, 25V or 4 Ohm
with all piloted channels 2x632 W RMS at 100V, 70V, 50V
1x1264 W RMS at 100V, 70V
Frequency response @1 W 40Hz÷20kHz
measured on output 33V
Harmonic distortion THD+N < 0.1%
@ 240 W RMS, 1kHz
Signal/noise ratio 80dB (with filter 22Hz-22kHz)
Separation between channels -66dB @100Hz, -75dB @ 1kHz, -70dB @ 10kHz
Inputs A and B balanced, with screw connector (B priority)
Input impedance 10kOhm (unbalanced) 20kOhm (balanced)
Input sensitivity 0dBu (0.775V) with balanced input,
6dBu with unbalanced input
Controls Level control for each channel on rear panel
Emergency input signals 0 dBu
“Failure” Output, Emergency Open collector 12 VDC/80mA max
Phantom Power supply 48 V activated on all B inputs of each channel
Output power supply Power supply ±15 VDC, max 100mA on each channel
Output connector type three “Faston” connectors: common, line, emergency
VAC power supply 230V 50 Hz
Absorption 1000 W (@ max power with music signal)
Operating conditions -20°C+40°C with max. humidity < 90%
Protections Thermal, short circuit, fuse on each amplifier
Dimensions 482x132x430mm (3 U rack)
LED indicators Input signal, saturation, thermal protection,
for each power stage power stage malfunction
Optional accessories Card for remote volume control of 2 channels
Model MMZ-VRC