At the heart of Meyer Sound's EXP line of cinema products are the Acheron® high-performance screen channel loudspeakers. The Acheron Designer is the most compact of the Acheron models, making it an excellent choice for sound design suites, screening rooms, private theatres, and small commercial theatres. Optimized for installation behind perforated screens, the Acheron Designer combines the advantages of self-powered technology and innovative horn design to deliver exceptional, precise coverage for the left, right, and center sound channels for cinema.
The Acheron Designer uses the same patentpending horn technology and high-frequency compression driver as the other Acheron models, delivering the same 38 Hz to 17 kHz frequency response. This consistency of fidelity between Acheron models ensures that soundtracks monitored with the Acheron Designer translate accurately when played back in larger rooms with the Acheron 100, Acheron 80, Acheron Studio, or other calibrated cinema system.
Designed specifically for cinema, the Acheron horn features a very soft roll-off beyond its 80-degree horizontal by 50-degree vertical coverage pattern. The extremely well-behaved horn ensures an accurate acoustic crossover and consistent vertical coverage pattern through the critical crossover range between the low- and high-frequency drivers. The optimized crossover point places most of the dialog in the horn, which is ideal for cinema applications.
Designed and manufactured at Meyer Sound's headquarters in Berkeley, California, the Acheron Designer’s drivers include one 12-inch lowfrequency cone driver, housed in an optimally tuned, ported enclosure, and one high-frequency 4-inch diaphragm compression driver. The drivers yield uncompromising quality and are powered by sophisticated onboard amplification. The selfpowered design ensures consistent results and simplifies installations in both new and existing rooms.
A proprietary two-channel, Class-D amplifier powers each driver channel independently. Onboard processing includes driver protection circuitry, an electronic crossover, and correction filters, ensuring flat frequency and phase responses. The rear-mounted, recessed heat sink yields efficient convection cooling, and allows the unit to be placed flat against walls, when necessary.
The optional RMS™ remote monitoring system provides comprehensive monitoring of system parameters on a Windows®-based computer.
The Acheron Designer enclosure is constructed of premium birch plywood and coated with a lowgloss, black-textured finish. The cabinet is fitted with two attachment points on the bottom for the optional MYA-DES cradle-style yoke, allowing the unit to be suspended from a single hanging point. An optional, black cloth grille frame is available for installations where the Acheron Designer is not placed behind a screen.
- High peak power output with ultralow distortion
- Exceptional fidelity and extended highfrequency performance
- Constant-Q horn yields uniform response throughout coverage area
- Extraordinarily flat amplitude and phase response for tonal accuracy
- Seamless integration with HMS-10 surround loudspeakers and X-800C subwoofer
- Sound design suites
- Small theatres
- Custom, private theatres
- Re-recording stages
- Mixing for postproduction facilities
|Operating Frequency Range
||37 Hz – 18 kHz
||38 Hz – 17 kHz ±4 dB
||230 Hz – 17 kHz ±30°
|Maximum Peak SPL
||80° horizontal x 50° vertical
||12" low-frequency cone driver
Nominal impedance: 2 Ω
Voice coil size: 4"
||4" compression driver
Nominal impedance: 8 Ω
Voice coil size: 4"
Diaphragm size: 4"
Exit size: 1.5"
||Differential, electronically balanced
|Maximum Common Mode Range
||±5 V DC, clamped to earth for voltage transient protection
||Female XLR input with male XLR loop output
||10 kΩ differential between pins 2 and 3
||Pin 1: Chassis/earth through 1 kΩ, 1000 pF, 15 V clamp network to
provide virtual ground lift at audio frequencies
Pin 2: Signal +
Pin 3: Signal –
Case: Earth ground and chassis
||Differential DC blocking up to the maximum common mode voltage
||>50 dB, typically 80 dB (50 Hz – 500 Hz)
||Common mode: 425 kHz; Differential mode: 142 kHz
||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
||Audio source must be capable of producing +20 dBV (10 V rms, 14 V peak) into 600 Ω to produce the maximum peak SPL over the operating bandwidth of the loudspeaker
||700 W (1 x 550 W, 1 x 250 W)
||1400 W peak
|THD, IM, TIM
||2 Ω low channel; 8 Ω high channel
||Convection, with recessed heat sink
||PowerCon® loop output
||Automatic, continuous range from 90 V AC to 265 V AC
|Safety Agency Rated Operating Range
||100–240 V AC, 50/60 Hz
|Turn-on and Turn-off Points
||90 V AC on, no turn-off, only fuse-protect above 265 V AC
|Current Draw: Idle Current
Maximum Long-Term Continuous Current (>10 sec)
Burst Current (<1 sec)7
Ultimate Short-Term Peak Current Draw
|0.23 A rms (115 V AC); 0.19 A rms (230 V AC); 0.24 A rms (100 V AC)
1.58 A rms (115 V AC); 0.83 A rms (230 V AC); 1.78 A rms (100 V AC)
3.1 A rms (115 V AC); 1.4 A rms (230 V AC); 3.6 A rms (100 V AC)
12.0 A peak (115 V AC); 8.0 A peak (230 V AC); 12.4 A peak (100 V AC)
25 A peak (115 V AC); 54 A peak (230 V AC); 20 A peak (100 V AC)
|RMS Network (Optional)
||Equipped with two-conductor twisted-pair network, reporting all operating parameters of amplifiers to system operator’s host computer
||19.00" w x 25.38" h x 14.58" d (483 mm x 645 mm x 370 mm) without optional grille frame
||76 lbs (34.5 kg) without optional grille frame
||Premium birch plywood
||Low gloss, black textured
||Attachment points on cabinet front corners for optional grille frame with black cloth
||Two threaded M6 attachment points on cabinet bottom for optional MYA-DES cradle-style yoke