Meyer Sound MJF-210-3, MJF-210-RMS-5, MJF-210-RMS-3 Data Sheet

DATASHEET ULTRA

[589 mm]

MJF-210

Low-Profile High-Power Stage Monitor

35°

11.80

[300 mm]

20.90

[531 mm]

Dimensions 23.18” w x 13.89” h x 20.90” d
(589 mm x 353 mm x 531 mm)
Weight 67 lbs (30.4 kg)
Enclosure Premium birch plywood
Finish Black textured
Protective Grille Powder-coat, hex-stamped steel

35°

13.89

[353 mm]

5°

6.12

[155 mm]

with black mesh screen

23.18

The MJF-210 low-profile high-power stage
monitor reproduces audio faithfully with high
intelligibility at high output levels with ample
low-frequency headroom. The self-powered
MJF-210 exceeds the stringent requirements
of today’s touring applications, withstanding
the rigors of road and stage while occupying
a small, lightweight footprint and a fraction of
the truck space of similar monitors requiring
external amplification.

The MJF-210’s phase-corrected 55 Hz to
18 kHz frequency range ensures that vocals
and instruments are reproduced accurately
with low distortion and no signal coloration.
Exhibiting flat phase and frequency responses,
as well as exceptional impulse response, the
MJF-210 surpasses the sonic capabilities of

Features & Benefits

Self-powered system guarantees



simplified setup and operation

Small lightweight footprint with no



external amplification occupies less truck
space

Low profile cabinet preserves

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onstage sight lines

conventional stage monitors while offering
the simplicity of self-powered setup and
operation.

The MJF-210’s durable, vented enclosure
houses two high-power, long-excursion, 10­inch low-frequency drivers, as well as a 4-inch
diaphragm compression driver coupled to a
50-degree horizontal by 70-degree vertical
constant directivity horn. The face of the
low-profile cabinet slopes 35 degrees from
the stage, ensuring optimal monitoring for
the performer, permitting freedom to move
upstage and downstage while remaining within
the horn’s consistent, wide vertical coverage.

Drivers are powered by a 3-channel, class D
amplifier. The Intelligent AC™ power supply

Wide vertical coverage permits the

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freedom to move upstage and downstage

High peak power ensures excellent

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transient response

Flat frequency and phase responses yield

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high gain before feedback

provides automatic voltage selection, EMI
filtering, soft current turn-on, and surge
suppression.

The optional RMS™ remote monitoring system
module provides comprehensive monitoring
of loudspeaker parameters from a Mac
Windows

®

-based computer. Optional XLR

®

or

5-pin connectors allow the use of composite
cables carrying both RMS and balanced audio.

Constructed of premium birch plywood, the
MJF-210’s cabinet is coated with a black­textured finish and includes protective rubber
strips on the bottom of the unit that prevent
changes in position due to vibrations. A hex­stamped steel grille lined with acoustical black
mesh protects the drivers.

Solutions

Main vocal monitor

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High output instrument monitor



MJF-210 Specifications

Acoustical

Operating Frequency Range
Frequency Response

1

55 Hz – 18 kHz

2

60 Hz – 16 kHz ±4 dB

Phase Response 200 Hz – 16 kHz ±45 degrees

Coverage

Horizontal 50 degrees
Vertical 70 degrees

Crossover

830 Hz

3

Transducers

Low Frequency Two high-power 10-inch cone drivers
High Frequency One 4-inch diaphragm compression driver

Audio Input

Type Differential, electronically balanced
Maximum Common Mode Range ±5 V DC
Connectors
Input Impedance 10 kOhm differential between pins 2 and 3
Wiring

4

XLR female input with XLR male loop output

5

Pin 1: Chassis/earth through 1 kOhm, 1000 pF, 15 V clamped network to

provide virtual ground lift at audio frequencies

Pin 2: Signal (+)
Pin 3: Signal (–)
Pin 4: RMS (polarity insensitive)
Pin 5: RMS (polarity insensitive)
Case: Earth ground and chassis
DC Blocking Differential DC blocking up to the maximum common mode voltage
CMRR >50 dB, typically 80 dB (50 Hz – 500 Hz)
RF Filter Common mode: 425 kHz; Differential mode: 142 kHz
TIM Filter Integral to signal processing (<80 kHz)
Nominal Input Sensitivity 0.0 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 +20 dBV (10 V rms, 14 V peak)

into 600 oms to produce the maximum peak SPL over the operating
bandwidth of the loudspeaker

Amplifier

Type 3-channel, class D
THD, IM, TIM <.02%
Cooling Convection

AC Power

Connectors powerCON 20 with loop output
Safety Rated Voltage Range 100–240 V AC, 50–60 Hz
Turn-on/off Points 90 V AC turn-on, no turn-off; internal fuse-protection above 265 V AC
115 V AC 230 V AC 100 V AC
Current Draw: Idle 0.26 A rms 0.25 A rms 0.28 A rms
Maximum Long-Term Continuous (>10 sec) 1.8 A rms 1.1 A rms 2.6 A rms
Burst (<1 sec)

6

3.5 A rms 1.8 A rms 4.2 A rms
Maximum Instantaneous Peak 16 A peak 8 A peak 18 A peak
Inrush 17 A peak 20 A peak 15 A peak

RMS Network (Optional)

Equipped with 2-conductor, twisted-pair network, reporting all amplifier

operating parameters to host computer

Notes:

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 meters.

3. At this frequency, the transducers
produce equal sound pressure levels.

4. Audio connectors available as XLR
5-pin or XLR 3-pin. XLR 5-pin
connectors accommodate both
balanced audio and RMS signals.

5. Pins 4 and 5 (RMS) included only with
XLR 5-pin connectors.

6. AC power cabling must be of
sufficient gauge so that under
burst current rms conditions, cable
transmission losses do not cause the
loudspeaker’s voltage to drop below
the specified operating range.

USC

N775

MJF-210 — 04.235.004.02 B3

Copyright © 2013, 2015
Meyer Sound Laboratories Inc.
All rights reserved

meyer sound laboratories inc.

2832 San Pablo Avenue
Berkeley, CA 94702

+1 510 486.1166

[e-mail]
www.meyersound.com

Architect Specifications

The loudspeaker shall be a self-powered stage moni­tor; its transducers shall include two 10-inch cone
drivers and one 4-inch diaphragm compression driver
on a 50-degree x 70-degree horn. The loudspeaker
shall incorporate internal processing electronics and a
3-channel amplifier, one channel for each driver. Pro­cessing functions shall include equalization, phase cor­rection, signal division, and protection for the low- and
high-frequency sections. The crossover point shall be
830 Hz.

Amplifier channels shall be class D. Distortion (THD, IM,
TIM) shall not exceed 0.02%.

Performance specifications for a typical production unit
shall be as follows, measured at 1/3-octave resolu­tion: operating frequency range, 55 Hz to 18 kHz; phase
response, 200 Hz to 16 kHz ±45 degrees. Coverage shall

be 50 degrees horizontal by 70 degrees vertical.

The audio input shall be electronically balanced with
a 10 kOhm impedance and accept a nominal 0 dBV
(1.0 V rms) signal. Audio connectors shall be XLR 3-pin,
female and male, accommodating balanced audio, or
XLR 5-pin, accommodating both balanced audio and
RMS. RF filtering shall be provided, and CMRR shall be
greater than 80 dB from 50 Hz to 500 Hz.

The internal power supply shall perform automatic volt­age selection, EMI filtering, soft current turn-on, and
surge suppression. Power requirements shall be nomi­nal 100, 110, or 230 V AC line current at 50–60 Hz. UL
and CE operating voltage range shall be 100–240 V AC
at 50–60 Hz. Maximum instantaneous peak current draw
shall be 15.8 A peak at 115 V AC, 7.9 A peak at 230 V AC,
and 18.2 A peak at 100 V AC. Current inrush during soft

turn-on shall not exceed 16.8 A peak at 115 V AC. AC
power connectors shall be powerCON 20 with loop
output.

The loudspeaker shall optionally include the RMS remote
monitoring system module.

Loudspeaker components shall be mounted in an
acoustically-vented, wedge-shaped enclosure con­structed of premium birch plywood with a black-tex­tured, hard-shell finish. The protective grille shall be
hex stamped steel with black mesh screen. Dimen­sions shall be 23.18 inches wide x 13.89 inches high x

20.90 inches deep (589 mm x 353 mm x 531 mm). Weight
shall be 67 lbs (30.4 kg). The enclosure’s front angle
shall be 35 degrees.

The loudspeaker shall be the Meyer Sound MJF-210.