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The HMS12 highpower surround loudspeaker

is optimized for use in cinemas, theatres, and

rerecording stages. The selfpowered, fullrange

HMS12 maintains a wide dynamic range, full

fidelity, and clarity during the most demanding of

digital soundtracks. As part of Meyer Sounds EXP

cinema series, the HMS12 integrates seamlessly

with Acheron screen channel loudspeakers, as

well as with other HMS surround loudspeakers.

Boasting a wide frequency range of 59 Hz to 18 kHz

and a maximum peak SPL of 130 dB at 1 meter

with very low distortion, the HMS12 ensures that

the full intensity and nuance of cinema surround

channels reach each listener without compromise.

The HMS12s transducers include a 12inch low

frequency, longexcursion cone driver and a

3inch diaphragm highfrequency compression

driver on a symmetrical constantdirectivity

100degree horn that delivers exceptional

consistency. The proprietary drivers designed

and manufactured at Meyer Sounds headquarters

in Berkeley, California are powered by two

channels of onboard amplification that include

an active crossover, driver protection circuitry,

and correction filters for flat phase and frequency

responses.

The versatile HMS12 can be mounted on walls

or ceilings at fixed or adjustable angles with the

optional wallmount brackets (fixed or adjustable),

hinge bracket, Ubracket, and halfyoke, allowing

the unit to be deployed per the requirements of any

surround or immersive surround format.

HMS-12 : High-Power Cinema Surround Loudspeaker

PRELIMINARY PRODUCT INFORMATION

DC power and balanced audio are received by the

HMS12 from a Phoenix 5pin male connector

on its top panel. Powering the unit from an

external source eliminates the need for wiring

conduits while still preserving the advantages of

selfpowered, biamplified loudspeaker systems.

The HMS12s amplifier and signalprocessing

circuits store DC power and tolerate voltage

drops, thereby accommodating lightgauge

cables and lengthy cable runs.

1. Recommended maximum operating frequency range. Response depends on loading conditions and room acoustics.

2. Free field, measured with 1/3-octave frequency resolution at 4 meters.

3. Measured with music referred to 1 meter.

meyer sound laboratories inc.

2832 San Pablo Avenue

Berkeley, CA 94702

T: +1 510 486.1166

F: +1 510 486.8356

techsupport@meyersound.com

www.meyersound.com

HMS12 04.227.004.01 A

Copyright 2013

Meyer Sound Laboratories Inc.

All rights reserved

Operating Frequency Range1

Frequency Response2

Phase Response

Maximum Peak SPL3

Coverage

Transducers

Voltage Requirement

Audio/Power Connector

Input Impedance

Nominal Input Sensitivity

Amplifier

Load

Cooling

59 Hz 18 kHz

63 Hz 17 kHz 4 dB

240 Hz 18 kHz 45

130 dB

100 symmetrical

One 12 lowfrequency, longexcursion cone driver

One 3 diaphragm highfrequency compression driver

48 V DC (MPS488HP external power supply)

Single Phoenix 5pin male (3 pins for balanced audio, 2 for DC power)

10 k differential between positive (+) and negative () audio pins

6.0 dBV (2.0 V rms, 2.8 V peak) continuous average is typically the

onset of limiting for noise and music

2channel amplifier with active crossover

4 low channel, 8 high channel

Convection

Preliminary Specifications

Notes:

16.80 w x 25.12 h x 9.78 d(427 mm x 638 mm x 248 mm)

46 lbs (20.87 kg)

Multiply hardwood

Black textured

Acoustically transparent, blackclothcovered frame

Rear attachment points foroptional wallmount brackets(fixed or adjustable), hingebracket, Ubracket, andhalfyoke

Dimensions

Weight

Enclosure

Finish

Protective Grille

Mounting

The MPS488HP external power supply is availabl

for conveniently distributing DC power and balanceaudio to up to eight HMS12 loudspeakers. The us

of composite multiconductor cables allows a singl

cable to carry both DC power and balanced audio

to each surround loudspeaker.

Meyer Sounds industry leading selfpowered

loudspeaker technology not only delivers unparallele

and consistent audio fidelity but also simplifie

installation, whether designing a new room from

scratch or adding surround channels to an existing

setup. The HMS12s textured finish and black clot

grille blend smartly with any theatre decor.

Exceptional fidelity and extended high

frequency performance

ConstantQ horn yields uniform response

throughout coverage area

Extraordinarily flat amplitude and phase

responses for tonal accuracy

Features & Benefits

Seamless integration with Acheron

screen channel loudspeakers

External DC power affords the flexibility

of lengthy cable runs without conduits

Mounts on walls or ceilings with optional

wallmount brackets (fixed or adjustable),

hinge bracket, Ubracket, and halfyoke

Applications

Cinemas and theatres

Rerecording stages

Surround mixing for production and

postproduction facilities

(Pending)