Meyer Sound Acheron Designer
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.
The loudspeaker shall be a self-powered, full-range system; the transducers shall consist of a 12-inch diameter cone driver and a 4-inch diaphragm compression driver on an 80-degree horizontal by 50-degree vertical horn. The loudspeaker system shall incorporate internal processing electronics and a twochannel amplifier, one channel for each driver. Processing functions shall include frequency and phase correction, signal division, and protection for the low- and high-frequency sections. The crossover point shall be 680 Hz.
Each amplifier channel shall be Class-D. Burst capability for the low-frequency channel shall be 550 watts total with a nominal 2-ohm resistive load and 250 watts for the highfrequency channel with a nominal 8-ohm resistive load. Total burst power shall be 700 watts (1400 watts peak). Distortion (THD, IM, TIM) shall not exceed 0.02 percent. Performance specifications for a typical production unit shall be as follows, measured at 1/3-octave resolution: operating frequency range shall be 37 Hz to 18 kHz; phase response shall be ±30 degrees from 230 Hz to 17 kHz; maximum peak SPL shall be 130 dB at 1 meter, free field.
The audio input shall be electronically balanced with a 10 kOhm impedance and accept a nominal 10 dBV (3.2 V rms, 4.5 V peak) signal. Connector shall be XLR (A-3) type female with parallel looping male. RF filtering shall be provided, and CMRR shall be greater than 80 dB from 50 Hz to 500 Hz.
The internal power supply shall perform automatic voltage selection, EMI filtering, soft current turn-on, and surge suppression. Power requirements shall be nominal 100, 110, or 230 V AC line current at 50 or 60 Hz. UL and CE operating voltage range shall be 100 to 240 V AC. Current draw during burst (<1 sec) shall be 3.1 A at 115 V AC, 1.4 A at 230 V AC and 3.6 A at 100 V AC. Ultimate short-term peak current draw shall be 12.0 A at 115 V AC, 54 A at 230 V AC, and 12.4 A at 100 V AC.
The AC power connector shall be a PowerCon locking connector with loop output.
The loudspeaker system shall provide facilities for installing Meyer Sound’s optional RMS remote monitoring system.
All loudspeaker components shall be mounted in an acoustically vented enclosure constructed of premium birch plywood with a low-gloss, black-textured finish. An optional grille frame with protective, black cloth shall be available. Dimensions shall be 19.00 inches wide by 25.38 inches high by 14.58 inches deep (483 mm x 645 mm x 370 mm) without the optional grille frame. Weight shall be 76 lbs (34.5 kg) with the optional grille frame. The cabinet bottom shall include protective, plastic skids, as
well as two M6 attachment points for the optional MYA-DES cradle-style yoke. The loudspeaker shall be the Meyer Sound Acheron Designer.
– 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