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M3D : Line Array Loudspeaker

The Meyer Sound® M3D™ loudspeaker is an
advanced line array system for mediumto long-throw applications. The product of
more than two years of intensive research
and development, the M3D features
BroadbandQ™ technology — a unique,
integrated set of engineered advancements
that optimize line array performance.
The M3D high-frequencysection comprises
two Meyer Sound 4-inch diaphragm
compression drivers coupled to a constantdirectivity horn through a patented REM™
ribbon emulaton manifold. The manifold
closely approximates the radiation
characteristic of a ribbon driver, affording
very tight vertical and wide 90-degree
horizontal coverage, while providing the
power capability of compression drivers.
Four 15-inch conedrivers in a vented
enclosure comprise the M3D's lowfrequency section. Two high-power
15-inch drivers (4-inch voice coil) with
neodymium magnets face forward. These
drivers are capable of a full half-inch of
linear excursion. In the rear of the cabinet,
two 15-inch cone drivers driven by a
sophisticated phase manipulation circuit
provide broadband directional control and

reinforce theoutput of the front-facing
drivers. This novel technology affords
controlled cardioid coverage to 35 Hz.
A complex mid-range phase and magnitude
alignment between the two front-facing
15-inch cone drivers prevents destructive
combing across the M3D's horizontal
coverage. TruPower® limiting technology
ensures maximum driver protection,
minimizes power compression and permits
high constantoutput under high continuous
and peak power conditions.
The self-powered M3D produces a maximum
output of 145 dB peak SPL at 1 meter within
its operating frequency range of 35 Hz to 18
kHz. The amplifier, control electronics and
power supply are integrated into a single,
field-replaceable module mounted at the
rear of the cabinet.
The four-channel class AB/H power
amplifier withcomplementary MOSFET
output stages produces 4500 watts
maximum. The M3D’s Intelligent AC™ power
supply affords automatic voltage selection,
EMI filtering, soft current turn-on and
surge suppression. Phase-corrected active
processing circuits help maintain excellent

features & benefits
Controlled broadband directivity minimizes
reverberation for greatest clarity
Cardioid low-frequency patternmaximizes
gain before feedback
Optimized line array behavior provides
consistent response over long throws
Multiple vertical line arrays may be splayed
horizontally to broaden coverage

performance and reliability, and the high
common-mode rejection of the lasertrimmed differential input permits long
signal runs through a simple shielded
twisted pair cable.
The M3D cabinet is coatedwith a textured
black finish. Integral metal grilles protect
the cone drivers, and a rain hood is fitted
to protect the electronics from moisture
intrusion. The optional QuickFly® MG-3D/M
multipurpose grid allows either flying or
ground stacking various combinations of
M3D and M3D-Sub. Up to 16 M3Ds (or the
equivalent weight of M3D and M3D-Sub)
may be flown with a 7:1 safety factor.
Up tofour M3Ds, four M3D-Subs or three
M3Ds and one M3D-Sub may be safely
ground stacked. Specially-designed caster
rails facilitate moving stacks of up to four
cabinets, and optional fabric covers protect
the cabinets in transit.
Meyer Sound's RMS™ remote monitoring
system is fitted as standard, providing
comprehensive monitoring of system
performance parameters over a Microsoft
Windows®network.

applications
Prodigious low-frequency capability can
eliminate need for subwoofers in some
applications
Self-powered for simplified setup and
increased reliability
Seamless integration with other M Series
models

Stadiums, arenas and concert halls
Touring sound reinforcement
Large-scale public events

15.88
[403 mm]

Architect Specifications

The loudspeaker shall...