Meyer Sound Acheron LF RMS Screen Channel Loudspeaker for Cinema Applications with 3-Pin XLR
The Acheron LF loudspeaker can be paired with the Acheron 80 or Acheron 100 screen channel loudspeaker to deliver the low-frequency headroom required by larger theaters. The self-powered Acheron LF with dual 15-inch drivers boosts the headroom on the LCR channels, converting each Acheron loudspeaker to a system with three low-frequency drivers in an aligned column.
Features:
- Small footprint and narrow width are ideal for small venues or fill applications
- Amazing power-to-size ratio
- Exceptional linearity and transient reproduction at any level, high peak power output, and extremely low distortion
- Self-powered to simplify setup and increase reliability
- Flexible rigging for flown and ground-stacked arrays
- Integrates easily with Meyer Sound’s 750-LFC, 900-LFC, and LEOPARD loudspeakers
Specifications:
- Acoustical:
- Operating Frequency Range: 37 Hz – 370 Hz
- Frequency Response: 38 Hz – 340 Hz ±4 dB
- Phase Response: 60 Hz – 230 Hz ±30°
- Linear Peak SPL: 133 dB with crest factor > 11 dB (M-noise), 133 dB (Pink noise), 133 dB (B-noise)
- Coverage:
- Horizontal Coverage: N/A
- Vertical Coverage: N/A
- Crossover: 200 Hz
- Transducers: Two high-power 15-inch cone drivers with neodymium magnets; 4 Ω nominal impedance
- Audio Input:
- Type: Differential, electronically balanced
- Maximum Common Mode Range: ±5 V DC, clamped to earth for voltage transient protection
- Connectors: XLR 3-pin female input with male loop output; optional XLR 5-pin connector 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 -
- Case: Earth ground and chassis
- Nominal Input Sensitivity: 10 dBV (3.2 V rms) continuous is typically the onset of limiting for noise and music
- Input Level: Audio source must be capable of producing of +20 dBV (10 V rms) into 600 Ω to produce the maximum peak SPL over the operating bandwidth of the loudspeaker.
- Amplifier:
- Type: Two-channel with complementary MOSFET output stages (class AB/H)
- Total Output Power: 4500 W peak
- THD, IM, TIM: < 0.02%
- Cooling: Forced air cooling, two internal fans (one ultra low-speed fan, one reserve fan)
- AC Power:
- Connectors: 250 V NEMA L6-20 (twistlock) inlet or IEC 309 male inlet
- Automatic Voltage Selection: Automatic, two ranges, each with high-low voltage tap (uninterrupted)
- Safety Agency Rated Operating Range: 95–125 V AC; 208–235 V AC, 50/60 Hz
- Turn-on and Turn-off Points: 85–134 V AC; 165–264 V AC
- Current Draw:
- Idle Current: 0.64 A rms (115 V AC); 0.32 A rms (230 V AC); 0.85 A rms (100 V AC)
- Maximum Long-Term Continuous Current (>10 sec): 8.8 A rms (115 V AC); 4.4 A rms (230 V AC); 10.0 A rms (100 V AC)
- Burst Current (<1 sec): 19.0 A rms (115 V AC), 9.5 A rms (230 V AC), 22.0 A rms (100 V AC)
- Maximum Instantaneous Peak Current: 39 A peak (115 V AC), 20 A peak (230 V AC), 45 A peak (100 V AC)
- Inrush Current: 7 A peak (115 V AC), 7 A peak (230 V AC), 10 A peak (100 V AC)
- Physical:
- Dimensions: W: 31 in (787 mm) x H: 36.18 in (919 mm) x D: 20.5 in (521 mm)
- Weight: 185 lb (83.91 kg)e
- Enclosure: Premium multi-ply birch with slightly textured black finish
- Protective Grille: Powder-coated, hex-stamped steel with black mesh
- Rigging: 3/8-inch threaded points on side corners for optional bracket adapters that allow the Acheron to be mounted to floors with uptilt or down tilt, as well as on top of the Acheron LF (also with uptilt or down tilt)
