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Meyer Sound Documentation

Operating Instructions — Acheron Designer

Compact High-Performance Cinema Screen Channel Loudspeaker
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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, center, and right screen channels for cinema.

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Acheron Designer (without Optional Grille Frame)

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.

Specifically designed 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 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.

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Acheron Designer with Recessed Heat Sink

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 low-gloss, black-textured finish. The cabinet bottom is fitted with two threaded M6 attachment points for the optional MYA-Acheron Designer cradle-style yoke, allowing the unit to be suspended from a single hanging point.

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Acheron Designer with Optional MYA-Acheron Designer Yoke

An optional, black cloth grille frame update kit is available for installations where the Acheron Designer is not placed behind a screen.

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Acheron Designer with Optional Grille Frame

The Acheron Designer combines advanced loudspeaker technology with equally advanced power capabilities.

Understanding power distribution, voltage and current requirements, and electrical safety guidelines is critical to the safe operation of the Acheron Designer.