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Meyer Sound Documentation

Specifications
In this section:
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ACOUSTICAL1

Operating Frequency Range1

100 Hz – 18 kHz

Frequency Response2

110 Hz – 16 kHz ± 4 dB

Phase Response

290 Hz – 16 kHz ±45°

Linear Peak SPL3

112 dB with 19 dB crest factor (M-noise), 104.5 dB (Pink Noise), 107.5 dB (B-noise)

COVERAGE

110° conical

TRANSDUCERS

Low Frequency

One 5-inch cone driver

High Frequency

One 0.75-inch dome tweeter mounted concentrically in wave guide

AUDIO INPUT

Type

Differential, electronically balanced

Connectors

Two Phoenix 5-pin male (one input and a hardwired loop output)

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

-2.5 dBV (0.25 V rms) continuous average is typically the onset of limiting for noise and music where pink noise has 12 dB peak-to-RMS ratio

Input Level

Audio source must be capable of producing of +16 dBV (6.3 V rms) into 600 Ω to produce the maximum peak SPL over the operating bandwidth of the loudspeaker.

AMPLIFIER

Type

High-efficiency, Class-D

Total Output Power4

440 W peak

THD, IM, TIM

<0.02%

Cooling

Natural convection through metal enclosure

DC POWER

Connectors

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

Safety Agency Rated Operating Range5,6

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

CURRENT DRAW

Idle Current

0.16 A rms

Maximum Long-Term Continuous Current (>3 sec)

0.32 A rms

Maximum Instantaneous Peak Current

1.70 A peak

PHYSICAL

Outside Dimensions

8.92 in (226.5 mm) diameter; 7.17 in (182 mm) depth: front of ceiling surface to built-in safety attachment ring

Cutout Diameter Range

7.70 – 7.95 in (195.5 – 201.9 mm)

Weight

7.8 lb (3.53 kg)

Enclosure

Zinc-plated steel-back can and UL 94 V-0 rated baffle

Grille

Perforated steel 9.34 in (237.3 mm) in diameter

Mounting Options

C-Ring with bridge kit, new construction bracket, and pendant mount

COMPLIANCE

Safety Agency Certification

Standard for audio, video and similar electronic apparatus:

  • UL 60065, CSA C22.2 NO. 60065-03 (AMD 2), IEC 60065, IEC 62368-1

  • Fire Rated to UL Standard 2043, Product and Accessories Installed in Air-Handling Spaces

EMC Certification

CE and FCC Part 15 Emission Class B emission limits applied.

MAXIMUM CABLE LENGTH7

Number of Speakers

Maximum Cable Length (feet) — Imperial

Maximum Cable Length (meters) — Metric

12 AWG

14 AWG

16 AWG

18 AWG

2.5 mm2

1.5 mm2

1.0 mm2

0.75 mm2

1

1800

1125

700

450

480

260

135

80

2

900

550

350

225

240

130

70

40

3*

*This also applies to one 8C and one 5C looped.

600

375

237

150

160

87

45

27

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

  2. Half-space loading, measured with 1/3-octave frequency resolution at 4 m.

  3. Linear Peak SPL is measured 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.

    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.

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

  5. Tolerates voltage drops up to 30% due to long cable runs. Normal operating conditions with recommended cable gauge, length, and number of speakers assures peak SPL to remain within 2 dB of max SPL specification.

  6. See MPS-482HP or MPS-488HP for information about compatible power supplies.

  7. Some high frequency loss can occur from long analog audio cables. For lengths greater than 500 ft (150 m)–indicated by grey background in above table—Meyer Sound recommends using low capacitance shielded audio cable or AES Digital audio cable. Discuss expected high frequency loss with the cable manufacturer to determine acceptability.