Rane MA 4 MA 4 Amplifier Data Sheet
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- Rane MA 4 | MA 4 Amplifier Data Sheet - Page 1
DATA SHEET MA 4 MULTICHANNEL AMPLIFIER General Description The 100 watt per channel, four-channel MA 4 amplifier achieves unparalleled power density, reliability and features in a space saving 1U, 19 inch rack mount chassis weighing only eight pounds (3.6 kg). A universal-voltage switching power - Rane MA 4 | MA 4 Amplifier Data Sheet - Page 2
MA 4 MULTICHANNEL AMPLIFIER Specifications Parameter Input impedance Maximum input Sensitivity range/resolution Remote level control range/resolution Fault flag in/out Limiter ..........Load compensated Compressor ..........Threshold ..........Attack ..........Decay ..........Knee Span Expander - Rane MA 4 | MA 4 Amplifier Data Sheet - Page 3
MA 4 MULTICHANNEL AMPLIFIER MADE IN U.S.A. RANE CORP. MA 4 COMMERCIAL AUDIO EQUIPMENT 24TJ R 100-240V 50/60 Hz 500 WATTS FOR CONTINUED GROUNDING PFROORTCEOCNTITOINNUDEODNGORTORUENMDOINVGE TPHRIOSTSECRTIEOWN. DO NOT REMOVE THIS SCREW. INT EXT 4 OUTPUTS Class 2 Wiring INT EXT INT EXT 3 2 - Rane MA 4 | MA 4 Amplifier Data Sheet - Page 4
MA 4 MULTICHANNEL AMPLIFIER Block Diagram INPUT CH1 INPUT CH2 INPUT CH3 INPUT CH4 IEC APPLIANCE INLET H G N 3 2 1 FUSE EMI FILTER INRUSH OVER VOLTAGE POWER-FACTORCORRECTION (100 kHz) SWITCH-MODE +25 POWER SUPPLY GND 2-SW FORWARD -25 (200 kHz) COMBINATION CONTROLLER SUPPLY CLOCK DSP - Rane MA 4 | MA 4 Amplifier Data Sheet - Page 5
LOW VOLTAGE FLYBACK Vrelay +5d +3.3 +5a PEAK LIMITER DETECT RMS OUTPUT LEVEL PEAK LIMITER DETECT RMS OUTPUT LEVEL PEAK LIMITER DETECT RMS OUTPUT LEVEL PEAK LIMITER DETECT RMS OUTPUT LEVEL DAC FILTER ATT. DAC FILTER ATT. AMPLIFIER CURRENT SENSE CH1 CH2 CH3 CH4 TEMP SENSE A1/A2 A3/A4 - Rane MA 4 | MA 4 Amplifier Data Sheet - Page 6
MA 4 MULTICHANNEL AMPLIFIER Attack: 1.5 seconds Release: 3 dB per second Output Power Output dB Power-Factor-Correction (PFC) Near perfect Power-Factor with ⅓ the peak current and ½ the average current (green) compared to non power-factor-corrected supply with conduction of 3 ms (black). The - Rane MA 4 | MA 4 Amplifier Data Sheet - Page 7
MA 4 MULTICHANNEL AMPLIFIER Basic Application Don't let those extra connections and switches intimidate you. The MA 4 is a high-quality general-purpose amplifier and connects like any other. MADE IN U.S.A. RANE CORP. MA 4 COMMERCIAL AUDIO EQUIPMENT 24TJ R 100-240V 50/60 Hz 500 WATTS INT EXT 4 - Rane MA 4 | MA 4 Amplifier Data Sheet - Page 8
normal operation and goes low (passive pull down) when a fault occurs. For information about Fault Flag operation (applications and reported faults) see the Manual, page 3. Remote Level Control inputs are provided for each channel. The Rane VR 2 or any 10k to 100 kΩ potentiometer may be connected to
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Data Sheet-1
MA 4
MULTICHANNEL AMPLIFIER
Features
•
Universal voltage, power-factor-corrected power supply
•
Very low inrush current
•
100 watts x 4 channels in 1U chassis
•
Built-in load monitoring
•
Remote fault reporting and redundancy switching
•
Optional 4 channel 70/100 volt transformers in 1U chassis
•
Adjustable high-pass filters and remote level controllable
•
Advanced dynamics control adjusts for sensitivity setting, load Z
and temperature
DATA SHEET
General Description
°e 100 watt per channel, four-channel MA 4 amplifier achieves
unparalleled power density, reliability and features in a space
saving 1U, 19 inch rack mount chassis weighing only eight
pounds (3.6 kg). A universal-voltage switching power supply
provides near perfect Power-Factor, reducing peak currents to
⅓ compared to non power-factor-corrected supplies. A long list
of unique features ranging from constant load power to built in
automatic redundancy switching to advanced dynamics control,
qualify the MA 4 for the most demanding fixed installation
applications. °e MA 4 excels in music & paging systems, small
conference rooms and speech reinforcement applications requir-
ing multiple amplifiers. Advanced dynamics control algorithms
adapt to changes in temperature, load impedance and sensitivity
setting.
°e result is a truly plug-and-play amplifier that ensures
excellent signal integrity at all times.
MT 4
MULTICHANNEL
TRANSFORMER
1
2
3
4
MADE IN U.S.A.
RANE CORP.
MT 4
IN
OUT
IN
OUT
IN
OUT
IN
OUT
IN
OUT
IN
OUT
IN
OUT
IN
OUT
+
–
100V 70V COM
+
–
100V 70V COM
+
–
100V 70V COM
+
–
100V 70V COM
Accessories
4
0
2
6
8
10
LEVEL
MT 4 Multichannel Transformer provides 100V or 70.7V constant-voltage distribution.
VR 2 Volume Remotes
can control the level from
within each zone.