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Meyer Sound Documentation

Specifications
In this section:
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ACOUSTICAL1

Operating Frequency Range2

35 Hz – 140 Hz

Frequency Response3

36 Hz – 125 Hz ± 4 dB

Phase Response

45 Hz – 120 Hz ±30°

Linear Peak SPL4

119.5 dB with > 10 dB crest factor (M-noise), 119.5 dB (Pink Noise), 121.5 dB (B-noise)

TRANSDUCER

Low Frequency

One 12-inch cone driver; 3 Ω nominal impedance

AUDIO INPUT

Type

Differential, electronically balanced

Maximum Common Mode Range

±15 V DC, clamped to earth for voltage transient protection

Connector

Phoenix 5-pin male

Input Impedance

10 kΩ differential between Audio (+) and Audio (–)

Wiring

Pin 1: DC Power (–) Pin 2: DC Power (+)

Pin 3: Audio Shield, Chassis/earth Pin 4: Audio (–)

Pin 5: Audio (+)

Nominal Input Sensitivity

0 dBV (1.0 V rms) continuous is typically the onset of limiting for noise and music

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.

AMPLIFIER

Type

Open-loop, Class-D

Total Output Power5

600 W peak

THD, IM, TIM

< 0.02%

Cooling

Convection

DC POWER

Connector

Phoenix 5-pin male provides power and audio connection (see Wiring above)

Safety Rated Voltage Range6,7

48 V DC—Meyer Sound MPS-482HP or MPS-488HP Power Supply required (NEC ANSI/NFPA 70 Class 2 Wiring Approved)

PHYSICAL

Dimensions

W: 13.5 in (343 mm) x H: 23.5 in (597 mm) x D: 12 in (305 mm)

Weight

43 lb (19.5 kg)

Enclosure

Premium multi-ply birch with slightly textured black finish

IP Rating

IP54 for weather-protected units with rain hood properly installed. See the USW-112XP Operating Instructions, available at meyersound.com/documents for details.

Protective Grille

Powder-coated, round-perforated steel

Rigging

Two integrated M8 threaded points; 35 mm Pole Mount with M20 thread; optional U-bracket for wall, ceiling, or truss mounting

Notes
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  1. Loudspeaker system predictions for coverage and SPL are available in Meyer Sound’s MAPP System Design Tool.

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

  3. Measured in half-space with 1/3 octave frequency resolution at 4 m.

  4. Linear Peak SPL is measured in half-space at 4 m referred to 1 m. Loudspeaker SPL compression measured with M-noise at the onset of limiting, 2-hour duration, and 50 °C ambient temperature is < 2 dB.

    M-noise is a full bandwidth (10 Hz–22.5 kHz) test signal developed by Meyer Sound to better measure the loudspeaker’s music performance. It has a constant instantaneous peak level in octave bands, a crest factor that increases with frequency, and a full bandwidth Peak to RMS ratio of 18 dB. The presence of a greater-than (>) symbol with regard to crest factor indicates it may be higher depending on EQ and boundary loading.

    Pink noise is a full bandwidth test signal with Peak to RMS ratio of 12.5 dB.

    B-noise is a Meyer Sound test signal used to ensure measurements reflect system behavior when reproducing the most common input spectrum, and to verify there is still headroom over pink noise.

  5. Peak power based on the maximum unclipped peak voltage the amplifier will produce into the nominal load impedance.

  6. Tolerates voltage drops (due to long cable runs) up to 30%.

  7. For information about the MPS-482HP or the MPS-488HP, refer to their datasheets or operating instructions.