Meyer Sound 750-LFC Compact Low-Frequency Control Element with 3-Pin XLR, Remote Monitoring System, Weather Protected Foldable Rain Hood, and Rig
Meyer Sound’s 750-LFC compact low-frequency control element reproduces low frequencies at high, continuous output levels with extremely low distortion. The 750-LFC offers the same sonic linearity as Meyer Sound’s 900-LFC low-frequency control element in a smaller, lighter cabinet, making it ideal for building scalable systems to suit portable applications or fixed installations of any size.
Features:
- Compact cabinet with small footprint and extraordinary power-to-size ratio
- High peak power output with extremely low distortion
- Exceptional linearity, transient reproduction, and low-frequency clarity
- Self-powered design for simplified setup and increased reliability
- Stackable and flyable in regular and cardioid arrays with splay options
- Integral pole-mount receptacle to facilitate pairing with LINA or ULTRA Series loudspeakers
Specifications:
- Acoustical:
- 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)
- Coverage: 360° (single unit); varies with number of units and configuration
- Transducers:
- Low Frequency: One 15-inch, dual-coil, long-excursion cone driver; 2 Ω nominal impedance
- Audio Input:
- 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.
- 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 –
- 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
- Amplifier:
- Type: 2-channel, open-loop, class D
- Total Output Power: 3100 W peak
- THD, IM, TIM: < 0.02%
- Cooling: Convection
- AC Power:
- Connectors: powerCON 20 input with loop output
- Automatic Voltage Selection: 90–265 V AC; 50–60 Hz
- Safety 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
- Current Draw:
- 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: 10.5 A rms (230 V AC)
- Burst Current (<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 Current: 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
- RMS Network(Optional): Two-conductor, twisted-pair network, capable of reporting all operating parameters of amplifiers to system operator’s host computer.
- Physical:
- Dimensions with Rigging: W: 21.55 in (547 mm) x H: 20.43 in (519 mm) x D: 20.88 in (530 mm)
- 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: 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)
MRK-750 RIGGING KIT
The optional MRK-750 rigging kit allows the 750-LFC to be flown and groundstacked with the MG-MINA/LINA/750 multipurpose grid. The kit also allows 750-LFCs to be flown and groundstacked with LINA with no transition hardware. The rigging kit is available as a factory-installed option or as a field upgrade and uses rugged GuideALinks and intuitive quickrelease pins to securely link adjacent loudspeakers in flown and groundstacked array configurations.
Foldable Rain Hood:
Weather-protected 750-LFCs include a rain hood for indoor/outdoor touring and sheltered outdoor installations. Meyer Sound offers two rainhood models: A fixed rigid rainhood for permanent installations and a foldable hood for portable applications.
750-LFC FOLDABLE RAIN HOOD: The 750-LFC foldable rain hood is installed on the unit when shipped. Four screws secure its frame permanently.
