Overview
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 theaters, and small commercial theaters. 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 patented 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 systems.
Designed specifically for cinema, the Acheron horn features a very soft roll-off beyond its 80° horizontal by 50° 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 low-frequency 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 self-powered 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 loudspeaker parameters from a Mac® or Windows®-based computer running Compass® Control Software.
The Acheron Designer enclosure is constructed of premium multi-ply birch and coated with a slightly textured black 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.
Features and Benefits
- High peak power output with ultra-low distortion
- Exceptional fidelity and extended high-frequency performance
- Uniform response throughout coverage area due to the Constant-Q horn
- Extraordinarily flat amplitude and phase response for tonal accuracy
- Seamless integration with HMS-10 surround loudspeakers and the X-800C subwoofer
Applications
- Sound design suites
- Small theaters
- Custom, private theaters
- Re-recording stages
- Mixing for postproduction facilities
Specifications
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ACOUSTICAL1 |
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Operating Frequency Range2 |
37 Hz – 18 kHz |
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Frequency Response3 |
38 Hz – 17 kHz ±4 dB |
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Phase Response |
230 Hz – 17 kHz ±30° |
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Linear Peak SPL4 |
128 dB with 18 dB crest factor (M-noise), 125.5 dB (Pink noise), 129 dB (B-noise) |
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COVERAGE |
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Horizontal Coverage |
80° |
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Vertical Coverage |
50° |
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TRANSDUCERS |
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Low Frequency |
12-inch cone driver; 2 Ω nominal impedance |
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High Frequency |
4-inch diaphragm compression driver; 8 Ω nominal impedance |
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AUDIO INPUT |
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Type |
Differential, electronically balanced |
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Maximum Common Mode Range |
±5 V DC, clamped to earth for voltage transient protection |
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Connectors |
3-pin XLR female input with male loop output |
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Input Impedance |
10 kΩ differential between pins 2 and 3 |
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Wiring |
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 |
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Nominal Input Sensitivity |
10 dBV (3.2 V rms) continuous is typically the onset of limiting for noise and music |
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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. |
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AMPLIFIER |
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Type |
Two channel, Class-D |
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Total Output Power5 |
1400 W peak |
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THD, IM, TIM |
< 0.02% |
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Cooling |
Convection, with recessed heat sink |
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AC POWER |
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Connector |
powerCON 20 input with loop output |
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Automatic Voltage Selection |
90–265 V AC |
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Safety Rated Voltage Range |
100–240 V AC, 50–60 Hz |
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Turn-on and Turn-off Points |
90 V AC turn-on, no turn-off; internal fuse-protection above 265 V AC |
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CURRENT DRAW |
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Idle Current |
0.23 A rms (115 V AC); 0.19 A rms (230 V AC); 0.24 A rms (100 V AC) |
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Maximum Long-Term Continuous Current (>10 sec) |
1.58 A rms (115 V AC); 0.83 A rms (230 V AC); 1.78 A rms (100 V AC) |
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Burst Current (<1 sec)6 |
3.1 A rms (115 V AC); 1.4 A rms (230 V AC); 3.6 A rms (100 V AC) |
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Maximum Instantaneous Peak Current |
12.0 A peak (115 V AC); 8.0 A peak (230 V AC); 12.4 A peak (100 V AC) |
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Inrush Current |
25 A peak (115 V AC); 54 A peak (230 V AC); 20 A peak (100 V AC) |
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RMS NETWORK (OPTIONAL) |
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Two-conductor twisted-pair network that reports all operating parameters of amplifiers to system operator’s host computer. |
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PHYSICAL |
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Dimensions |
W: 19.00 in (483 mm) x H: 25.38 in (645 mm) x D: 14.96 in (380 mm) |
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Weight |
76 lb (34.5 kg) |
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Enclosure |
Premium multi-ply birch with slightly textured black finish |
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Protective Grille |
Attachment points on cabinet front corners for optional grille frame with black cloth |
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Rigging |
Two threaded M6 attachment points on cabinet bottom for optional MYA-DES cradle-style yoke |
