750-LFC OPERATING INSTRUCTIONS
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AMPLIFIER
TypeTwo-channel, open-loop, class D
Total Output Power3100 W peak
Note: Peak power based on the maximum unclipped voltage the amplifier will produce
into the nominal load impedance.
THD, IM, TIM<0.02%
CoolingConvection
AC POWER
ConnectorspowerCON 20 input with loop output
Automatic Voltage Selection90–265 V AC; 50–60 Hz
Safety Rated Voltage Range100–240 V AC, 50–60 Hz
Turn-on/off PointsTurn-on: 90 V AC; Turn-off: none; internal fuse protection above 265 V AC
Current Draw115 V AC230 V AC100 V AC
Idle0.39 A rms0.38 A rms0.42 A rms
Maximum Long-Term Continuous5.3 A rms2.7 A rms6.2 A rms
Burst9.2 A rms4.4 A rms10.7 A rms
Maximum Instantaneous Peak15.3 A peak7.8 A peak18 A peak
Inrush<20.0 A peak
RMS NETWORK (OPTIONAL)
Two-conductor, twisted-pair network, capable of reporting all operating parameters of
amplifiers to system operator’s host computer.
PHYSICAL
Dimensions21.80 in (554 mm) W20.30 in (515 mm) H20.88 in (530 mm) D
Dimensions (with rigging)21.55 in (547 mm) W20.43 in (519 mm) H20.88 in (530 mm) D
Weight89 lb (40.3 kg)
Weight (with rigging)105 lb (47.6 kg)
EnclosurePremium multi-ply birch with slightly textured black finish
Protective GrillePowder-coated, hex-stamped steel with acoustical black mesh
RiggingOptional MRK-750 rigging kit with end frames and captive GuideALinks secured with
0.25 in x 0.53 in quick release pins that allow (0°, 1.5°, 3.25°, and 4.75° splay angles);
detachable side handles. Rigging allows ground-stacked, flown, and cardioid
configurations
Pole MountU.S. version: 1 1/2 in (38 mm)
E.U. version: 1 3/8 in (35 mm and M20 thread at the bottom)
ENVIRONMENTAL
Operating Temperature0° C to +45° C
Non Operating Temperature–40° C to +75° C
HumidityTo 95% at 45° C (non-condensing)
Operating AltitudeTo 5,000 m (16,404 ft)
Non Operating AltitudeTo 12,000 m (39,000 ft)
Shock30 g 11 msec half-sine on each of 6 sides
Vibration10 Hz – 55 Hz (0.010 m peak-to-peak excursion)
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