Operating Instructions — HMS
Cinema Surround Loudspeaker
The HMS cinema surround loudspeaker is optimized for use in cinemas, high-end private theaters, screening rooms, and other surround applications. Designed to complement Meyer Sound’s Acheron™ screen channel loudspeakers, the self-powered HMS maintains a wide dynamic range, exceptional fidelity, and precise clarity during the most demanding of digital soundtracks. Boasting a wide frequency range and a generous linear peak SPL with very low distortion, the HMS delivers the full intensity and nuance of cinema surround channels to every listener without compromise.
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HMS-10 Cinema Surround Loudspeaker (With Grille)
The HMS cinema surround loudspeaker is available in five models: HMS-5, HMS-10, HMS-12, HMS-15, and HMS-15AC, ranging in size, weight, driver size, and power to accommodate a wide range of venues and applications. The proprietary long-excursion cone drivers and diaphragm compression drivers are driven by an onboard amplifier that includes an active crossover, driver protection circuitry, and correction filters for flat phase and frequency response. A constant-directivity horn provides uniform, full-range, consistent coverage.
The HMS-5, HMS-10, HMS-12, and HMS-15 are equipped with IntelligentDC technology and receive DC power and balanced audio from composite Phoenix™ 5-pin connectors. Powering the loudspeakers from an external DC source eliminates the need for AC conduits while preserving the advantages of self-powered systems. IntelligentDC loudspeakers require an MPS-488HP external power supply. The single-space 19-inch rack unit distributes DC power and balanced audio to up to eight HMS-5, HMS-10, or HMS-12 loudspeakers, or up to four HMS-15 loudspeakers. Composite multiconductor cables, such as Belden® 1502 or equivalent, can deliver both DC power and balanced audio to loudspeakers at cable lengths up to 150feet with just 1dB of loss in peak SPL using 18AWG wire. Longer cable runs are possible with heavier gauge wire. The MPS-488HP is optionally available with an RMS™ remote monitoring system module for monitoring voltage and current draw for its attached loudspeakers from a Mac® or Windows®-based computer.
The HMS-15AC is an AC-powered version of the HMS-15. Its IntelligentAC™ power supply provides automatic voltage selection, EMI filtering, soft current turn-on, and surge suppression. The HMS-15AC is optionally available with its own onboard RMS remote monitoring system module for comprehensive monitoring of loudspeaker parameters from a Mac or Windows-based computer.
The versatile HMS can be suspended or mounted on walls or ceilings at fixed or adjustable angles with optional halfyoke, U-bracket, or wall-mount brackets, allowing it to be deployed per the requirements of any surround application or immersive cinema format.
Meyer Sound’s industry-leading self-powered technology not only delivers unparalleled and consistent audio fidelity but also simplifies installation, whether designing new rooms from scratch or adding surround channels to existing installations. The HMS cabinet features a black textured finish and an acoustically transparent, detachable, black cloth grille that blend smartly with any theatre decor.
These operating instructions document the following HMS loudspeakers:
HMS-5 compact cinema surround loudspeaker
HMS-10 cinema surround loudspeaker
HMS-12 high-power cinema loudspeaker
HMS-15 high-power cinema loudspeaker
Note
For the sake of brevity, when referring to these loudspeakers collectively, this document will refer to them as HMS loudspeakers.
The AC-powered HMS-15AC is not documented in these operating instructions. For information about it, refer to the HMS-15AC Operating Instructions (PN05.242.005.01).