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Meyer Sound Documentation

Specifications
In this section:
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ACOUSTICAL1

Operating Frequency Range2

75 Hz – 20 kHz

Frequency Response3

80 Hz – 16 kHz ±4 dB

Phase Response

300 Hz – 18 kHz ±60 degrees

Linear Peak SPL4

118.5 dB with crest factor >14 dB (M-noise), 113 dB (Pink noise), 115.5 (B‑noise)

COVERAGE

Horizontal Coverage

100°

Vertical Coverage

100°

TRANSDUCERS

Low Frequency

Two 5‑inch cone drivers; 8 Ω nominal impedance

High Frequency

One 1‑inch metal dome tweeter; 8 Ω nominal impedance

AUDIO INPUT

Type

Differential, electronically balanced

Maximum Common Mode Range

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

Connectors

Phoenix 5‑pin Male; SwitchCraft 5‑pin Male; ECO‑M 7‑pin Male (two pins for 48 V DC power, three pins for balanced audio)

Input Impedance

10 kΩ differential between positive (+) and negative (–) audio pins

Wiring5

Phoenix 5‑pin Male

Pin 1: DC Power (‑)

Pin 2: DC Power (+)

Pin 3: Chassis/earth through 1 kΩ, 1000 pF, 15 V clamp network to provide virtual

ground lift at audio frequencies

Pin 4: Audio (‑)

Pin 5: Audio (+)

SwitchCraft EN3 5‑pin Male

Pin 1: DC Power (‑)

Pin 2: DC Power (+)

Pin 3: Chassis/earth through 1 kΩ, 1000 pF, 15 V clamp network to provide virtual

ground lift at audio frequencies

Pin 4: Audio (‑)

Pin 5: Audio (+)

ECO‑M 7‑pin Male5

Pin 1: DC Power (‑)

Pin 2: DC Power (+)

Pin S: Chassis/earth through 1 kΩ, 1000 pF, 15 V clamp network to provide virtual

ground lift at audio frequencies

Pin 5: Audio (‑)

Pin 6: Audio (+)

Nominal Input Sensitivity

–8.0 dBV (0.4 V rms) continuous average 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

3‑channel, class D

Total Output Power6

650 W peak

THD, IM, TIM

< 0.02%

Cooling

Convection

DC POWER

Connector

Phoenix 5‑pin Male; SwitchCraft 5‑pin Male; ECO‑M 7‑pin Male (two pins for 48 V DC power, three pins for balanced audio)

Safety Rated Voltage Range

48 V DC

RMS NETWORK (OPTIONAL)

Equipped with two‑conductor twisted‑pair network, reporting all operating parameters of amplifiers to system operator’s host computer.

PHYSICAL

Dimensions

W: 6.85 in (174 mm) x H: 18.00 in (457 mm) x D: 7.70 in (196 mm)

Weight

17 lb (7.7 kg)

Enclosure

Premium multi‑ply birch with slightly textured black finish

Protective Grille

Powder‑coated, hex‑stamped steel with black mesh

Rigging

Three 3/18‑inch‑16 or metric M10 nut plates

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. Free‑field, measured with 1/3 octave frequency resolution at 4 m.

  4. Linear Peak SPL is measured in free‑field at 4 m referred to 1 m. Loudspeaker SPL compression measured with M‑noise at the onset of limiting, 2‑hour duration, and 50‑degree 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. Pins 3 and 4 not used in ECO‑M connector.

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

Compliance
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Compliance_1.ai