Meyer Sound Acheron LF - Cinema Monitoring LF Loudspeaker
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Availability:
Special Order ItemMeyer Sound products are built to order in the USA - please contact us for lead time and pricing.
Description
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 theatres. The self-powered Acheron LF with dual 15-inch drivers boosts the headroom on the LCR channels be converting each Acheron loudspeaker to a system with three low-frequency drivers in an aligned column.
The unique multi-way, gradated design offers smooth coverage and maximum low-frequency impact with all drivers active at the lowest frequencies and each rolling off, one at a time, via the integral active crossover. This technique eliminates interference between drivers that would otherwise occur at shorter wavelengths, enabling the system to maintain ideal polar, phase, and frequency responses throughout the low and low-mid operating ranges. As a result, the system can deliver the necessary power to completely fill a large theatre with rich, clean sound, thereby ensuring that the full intensity and nuance so carefully crafted into today's movie soundtracks reach every listener without compromise.
The Acheron LF was designed exclusively for use with Acheron loudspeakers. The Acheron LF's 37 Hz to 370 Hz operating frequency range and 136 dB maximum peak SPL were carefully chosen to compliment the Acheron. The Acheron LF also features the same high-power 15-inch cone driver used in the low frequency section of the Acheron. Engineered to deliver optimum performance, the high-excursion, backvented drivers include 4-inch voice coils and are housed in a tuned, vented enclosure that shares the same rectangular footprint as the Acheron.
The Acheron LF is powered by an onboard two-channel class AB/H amplifier with complementary MOSFET output stages. Total output power is 2250 W (4500 W peak) and provides the system with enough headroom to easily accommodate the extreme demands of digital soundtracks. The optional RMS remote monitoring system allows comprehensive monitoring of system parameters on a Windows-based computer. Strategically placed 3/8-inch threaded points on the side corners of the Acheron LF cabinet allow the unit to be mounted to floors with optional mounting brackets. The Acheron 100 and Acheron 80 can be mounted on top of the Acheron LF with uptilt or downtilt with optional stacking brackets.
Suggested Applications:
- Small to medium-sized theatres
- Larger theatres with use of Acheron LF
- Re-recording stages
- Production and postproduction studios
| Operating Frequency Range | 37 Hz Ð 370 Hz |
| Frequency Response | 38 Hz Ð 340 Hz ±4 dB |
| Phase Response | 60 Hz Ð 230 Hz ±30¡ |
| Maximum Peak SPL | 136 dB |
| Dynamic Range | >110 dB |
| Crossover | 580 Hz |
| Transducers | |
| Low Frequency | Two high-power 15" cone drivers with neodymium magnets Nominal impedance: 4 ½ Voice coil size: 4" Power handling: 1200 W (AES) |
| High Frequency | N/A |
| Audio Input | |
| Type | Differential, electronically balanced |
| Maximum Common Mode Range | ±15 V DC, clamped to earth for voltage transient protection |
| Connectors | Female XLR input with male XLR loop output |
| Input Impedance | 10 k½ differential between pins 2 and 3 |
| Wiring | Pin 1: Chassis/earth through 220 k½, 1000 pF, 15 V clamp network to provide virtual ground lift at audio frequencies Pin 2: Signal + Pin 3: Signal Ð Case: Earth ground and chassis |
| DC Blocking | None on input, DC blocked through signal processing |
| CMRR | >50 dB, typically 80 dB (50 Hz Ð 500 Hz) |
| RF Filter | Common mode: 425 kHz; Differential mode: 142 kHz |
| TIM Filter | Integral to signal processing (<80 kHz) |
| Nominal Input Sensitivity | 10 dBV (3.2 V rms, 4.5 V peak) 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, 14 V peak) into 600 ½ to produce the maximum peak SPL over the operating bandwidth of the loudspeaker |
| Amplifier | |
| Type | Complementary MOSFET output stages (class AB/H) |
| Output Power | 1125 low channels |
| Total Output | 4500 W peak |
| THD, IM, TIM | <.02% |
| Load Capacity | 4 ½ low channels |
| Cooling | Forced air cooling, twointernal fans (one ultra lowspeed fan, one reserve fan) |
| AC Power | |
| Connector | 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 | 95Ð125 V AC; 208Ð235 V AC, 50/60 Hz |
| Turn-on and Turn-off Points | 85Ð134 V AC; 165Ð264 V AC |
| Current Draw: Idle Current Max. Long-Term Continuous Current (>10 sec) Burst Current (<1 sec)9 Ultimate Short-Term Peak Current Inrush Current |
0.64 A rms (115 V AC); 0.32 A rms (230 V AC); 0.85 A rms (100 V AC) 8.8 A rms (115 V AC); 4.4 A rms (230 V AC); 10.0 A rms (100 V AC) 19.0 A rms (115 V AC), 9.5 A rms (230 V AC), 22.0 A rms (100 V AC) 39 A peak (115 V AC), 20 A peak (230 V AC), 45 A peak (100 V AC) 7 A peak (115 V AC), 7 A peak (230 V AC), 10 A peak (100 V AC) |
| RMS Network (Optional) | Equipped with two-conductor twisted-pair network, reporting all operating parameters of amplifiers to system operatorÕs host computer |
| Dimensions | 31.00" w x 36.18" h x 20.50" d (787 mm x 919 mm x 521 mm) |
| Weight | 185 lbs (83.91 kg) |
| Enclosure | Premium birch plywood |
| Finish | Low gloss, black textured |
| Mounting | 3/8" threaded points on side corners for optional bracket adapters, which allow the Acheron LF to be mounted to floors; The Acheron 100 and Acheron 80 can be mounted on top of the Acheron LF with uptilt or downtilt |
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 theatres. The self-powered Acheron LF with dual 15-inch drivers boosts the headroom on the LCR channels be converting each Acheron loudspeaker to a system with three low-frequency drivers in an aligned column.
The unique multi-way, gradated design offers smooth coverage and maximum low-frequency impact with all drivers active at the lowest frequencies and each rolling off, one at a time, via the integral active crossover. This technique eliminates interference between drivers that would otherwise occur at shorter wavelengths, enabling the system to maintain ideal polar, phase, and frequency responses throughout the low and low-mid operating ranges. As a result, the system can deliver the necessary power to completely fill a large theatre with rich, clean sound, thereby ensuring that the full intensity and nuance so carefully crafted into today's movie soundtracks reach every listener without compromise.
The Acheron LF was designed exclusively for use with Acheron loudspeakers. The Acheron LF's 37 Hz to 370 Hz operating frequency range and 136 dB maximum peak SPL were carefully chosen to compliment the Acheron. The Acheron LF also features the same high-power 15-inch cone driver used in the low frequency section of the Acheron. Engineered to deliver optimum performance, the high-excursion, backvented drivers include 4-inch voice coils and are housed in a tuned, vented enclosure that shares the same rectangular footprint as the Acheron.
The Acheron LF is powered by an onboard two-channel class AB/H amplifier with complementary MOSFET output stages. Total output power is 2250 W (4500 W peak) and provides the system with enough headroom to easily accommodate the extreme demands of digital soundtracks. The optional RMS remote monitoring system allows comprehensive monitoring of system parameters on a Windows-based computer. Strategically placed 3/8-inch threaded points on the side corners of the Acheron LF cabinet allow the unit to be mounted to floors with optional mounting brackets. The Acheron 100 and Acheron 80 can be mounted on top of the Acheron LF with uptilt or downtilt with optional stacking brackets.
Suggested Applications:
- Small to medium-sized theatres
- Larger theatres with use of Acheron LF
- Re-recording stages
- Production and postproduction studios
| Operating Frequency Range | 37 Hz Ð 370 Hz |
| Frequency Response | 38 Hz Ð 340 Hz ±4 dB |
| Phase Response | 60 Hz Ð 230 Hz ±30¡ |
| Maximum Peak SPL | 136 dB |
| Dynamic Range | >110 dB |
| Crossover | 580 Hz |
| Transducers | |
| Low Frequency | Two high-power 15" cone drivers with neodymium magnets Nominal impedance: 4 ½ Voice coil size: 4" Power handling: 1200 W (AES) |
| High Frequency | N/A |
| Audio Input | |
| Type | Differential, electronically balanced |
| Maximum Common Mode Range | ±15 V DC, clamped to earth for voltage transient protection |
| Connectors | Female XLR input with male XLR loop output |
| Input Impedance | 10 k½ differential between pins 2 and 3 |
| Wiring | Pin 1: Chassis/earth through 220 k½, 1000 pF, 15 V clamp network to provide virtual ground lift at audio frequencies Pin 2: Signal + Pin 3: Signal Ð Case: Earth ground and chassis |
| DC Blocking | None on input, DC blocked through signal processing |
| CMRR | >50 dB, typically 80 dB (50 Hz Ð 500 Hz) |
| RF Filter | Common mode: 425 kHz; Differential mode: 142 kHz |
| TIM Filter | Integral to signal processing (<80 kHz) |
| Nominal Input Sensitivity | 10 dBV (3.2 V rms, 4.5 V peak) 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, 14 V peak) into 600 ½ to produce the maximum peak SPL over the operating bandwidth of the loudspeaker |
| Amplifier | |
| Type | Complementary MOSFET output stages (class AB/H) |
| Output Power | 1125 low channels |
| Total Output | 4500 W peak |
| THD, IM, TIM | <.02% |
| Load Capacity | 4 ½ low channels |
| Cooling | Forced air cooling, twointernal fans (one ultra lowspeed fan, one reserve fan) |
| AC Power | |
| Connector | 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 | 95Ð125 V AC; 208Ð235 V AC, 50/60 Hz |
| Turn-on and Turn-off Points | 85Ð134 V AC; 165Ð264 V AC |
| Current Draw: Idle Current Max. Long-Term Continuous Current (>10 sec) Burst Current (<1 sec)9 Ultimate Short-Term Peak Current Inrush Current |
0.64 A rms (115 V AC); 0.32 A rms (230 V AC); 0.85 A rms (100 V AC) 8.8 A rms (115 V AC); 4.4 A rms (230 V AC); 10.0 A rms (100 V AC) 19.0 A rms (115 V AC), 9.5 A rms (230 V AC), 22.0 A rms (100 V AC) 39 A peak (115 V AC), 20 A peak (230 V AC), 45 A peak (100 V AC) 7 A peak (115 V AC), 7 A peak (230 V AC), 10 A peak (100 V AC) |
| RMS Network (Optional) | Equipped with two-conductor twisted-pair network, reporting all operating parameters of amplifiers to system operatorÕs host computer |
| Dimensions | 31.00" w x 36.18" h x 20.50" d (787 mm x 919 mm x 521 mm) |
| Weight | 185 lbs (83.91 kg) |
| Enclosure | Premium birch plywood |
| Finish | Low gloss, black textured |
| Mounting | 3/8" threaded points on side corners for optional bracket adapters, which allow the Acheron LF to be mounted to floors; The Acheron 100 and Acheron 80 can be mounted on top of the Acheron LF with uptilt or downtilt |
We are your source for all your pro audio needs, delivered by experts. Call us today.
We are your source for all your pro audio needs, delivered by experts. Call us today.
