Rane MA 4, Инструкция по эксплуатации

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Data Sheet-2
MA 4
MULTICHANNEL AMPLIFIER
Specifications
Parameter Specification
Conditions/Comments
Input impedance 10 kΩ Each leg, differential, 1 kHz
Maximum input +22 dBu
Sensitivity range/resolution +22 to +4 dBu 256 steps
Remote level control range/resolution Attenuate only; 0 dB to –80 dB Audio taper response, 256 steps
Fault flag in/out Active 5V high-side drive, passive pull down. NO Fault = +5V; Fault = 0V
Limiter Oversampled instantaneous attack 3 dB per second decay
..........Load compensated Limit set for 7.5 amps peak Based on load Z
Compressor 50 ms rms detector Threshold relative to limiter
..........Threshold 10 dB re peak dBFS Rear panel dipswitch on/off
..........Attack 1.5 second
..........Decay 3 dB per second
..........Knee Span 10 dB
Expander Select on rear panel rms detector
..........Threshold -70 dBFS
..........Attack 50 ms Gain reduction release time constant
..........Decay 10 dB per second Rate of gain reduction
High-pass filter 12 dB per octave, Butterworth 20, 40, 60, 80 Hz dipswitch select
Load sensing 2 to 16Ω normal Green Load indicator on
..........Low load detect Below 2Ω is low Green Load indicator flashing
..........High load detect Above 16Ω is high Green Load indicator off
..........Min average power 3.3 watts average required for good load estimate
Output
..........Power
100 watts 3 to 8 Ω
..........Frequency response 20 Hz to 20 kHz +0, -3 dB
..........Dynamic range >90 dB A-weighted, typical
..........THD+N 0.1% typ 100 watts into 4Ω, 20-20 kHz
..........Clock fundamental 310 kHz <10 mV residual
..........Relay switching Turn on mute, fault protection, redundancy switching
Fan cooling Temperature controlled, variable speed Intake left side, exhaust right side
Heat load in Btu/hr 100 / 240 volts AC 50/60 Hz
..........Standby 10.2 / 13.3
..........Run mode, no signal 112.3 / 95.5
..........All channels driven 167 / 139 pink noise, average ⅛ th power, 4:1 crest
AC Mains 100 to 240 VAC ±10%, 50 or 60 Hz
PFC 100 kHz boost
DC/DC 200 kHz forward
Unit: Conformity FCC, CULUS
..........Construction All Steel
..........Size 1.75"H x 19"W x 9.25"D (4.4 cm x 48.3 cm x 23.5 cm)
..........Weight: 8 lb (3.6 kg)
Shipping: Size 4.5" x 20.3" x 13.75" (11.5 cm x 52 cm x 35 cm)
..........Weight: 11 lb (5 kg)
All specifications typical unless otherwise noted.