750-LFC

Specifications

Operating Frequency Range: 35 Hz – 125 Hz
Frequency Response: 37 Hz – 110 Hz ±4 dB
Phase Response: 43 Hz – 110 Hz ±30°
Linear Peak SPL: 130.5 dB with crest factor >9 dB (M-noise), 130.5 dB (pink noise), 132 dB (B-noise)

Low Frequency: One 15-inch, dual-coil, long-excursion cone driver; 2 Ω nominal impedance

Type: Differential, electronically balanced
Maximum Common Mode Range: ±15 V DC, clamped to earth for voltage transient protection
Connectors: XLR 3-pin female with male loop. Optional 5-pin connectors to accommodate both balanced audio and RMS signals
Input Impedance: 10 kΩ differential between pins 2 and 3
Wiring: Pin 1: Chassis/earth through 1 kΩ, 1000 pF, 15 V clamped network to provide virtual ground lift at audio frequencies Pin 2: Signal (+) Pin 3: Signal (–) Pin 4: RMS Pin 5: RMS Case: Earth ground and chassis
Nominal Input Sensitivity: 6.0 dBV (2.0 V rms) continuous is typically the onset of limiting for noise and music
Input Level: Audio source must be capable of producing +20 dBV (10 V rms) into 600 Ω to produce the maximum peak SPL over the operating bandwidth of the loudspeaker

Connectors: powerCON 20 input with loop output
Automatic Voltage Selection: 90–265 V AC; 50–60 Hz
Safety Agency Rated Voltage Range: 100–240 V AC, 50–60 Hz
Turn-on and Turn-off points: Turn-on: 90 V AC; Turn-off: none; internal fuse protection above 265 V AC

Idle: 0.39 A rms (115 V AC), 0.38 A rms (230 V AC), 0.42 A rms (100 V AC)
Maximum Long-Term Continuous: 5.3 A rms (115 V AC), 2.7 A rms (230 V AC), 6.2 A rms (100 V AC)
Burst (<1 sec): 9.2 A rms (115 V AC), 4.4 A rms (230 V AC), 10.7 A rms (100 V AC)
Maximum Instantaneous Peak: 15.3 A peak (115 V AC), 7.8 A peak (230 V AC), 18 A peak (100 V AC)
Inrush Current: < 20.0 A peak

Dimensions without Rigging: W: 21.80 in (554 mm) x H: 20.30 in (515 mm) x D: 20.88 in (530 mm)
Dimensions with Rigging: W: 21.55 in (547 mm) x H: 20.43 in (519 mm) x D: 20.88 in (530 mm)
Weight without Rigging: 89 lbs (40.3 kg)
Weight with Rigging: 105 lbs (47.6 kg)
Enclosure: Premium multi-ply birch with slightly textured black finish
Protective Grille: Powder-coated, hex-stamped steel with acoustical black mesh
Rigging: Optional 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°, or 4.75° splay angles; detachable side handles. Rigging allows ground-stacked, flown, and cardioid configurations
Pole Mount: U.S. version: 1.5 in (38 mm) E.U. version: 1.375 in (35 mm and M20 thread at the bottom)