Meyer Sound MM-4 - Manual

system. This two-channel, single rack space
unit provides frequency and phase response
correction circuitry tailored to the MM-4
loudspeaker. In conjunction with professional
grade amplifiers, the MM-4CEU must be used
to protect your MM-4 loudspeakers against
damaging overload conditions, while ensuring
that they meet their published specifications.
Through a SpeakerSense™ connection to
the power amplifier output, the MM-4 CEU
continuously monitors the power applied to
the drivers, activating integral peak and RMS
limiters to protect against over-excursion and
overheating, respectively.
The required MM-4CEU incorporates Meyer
Sound’s MultiSense™ circuit to drive several
amplifiers, monitor two amplifier channels and
activate its protection circuits based on the
system branch with the highest signal level.
MultiSense allows the levels of individual zones
The MM-4 loudspeaker is a very compact, wide-
range loudspeaker for high quality distributed
system applications. Unlike conventional low
power 70-volt transformer based systems, the
MM-4 connects directly to the amplifier and
is capable of producing high sound pressure
levels while dramatically reducing distortion
and easing installation requirements.
The MM-4 comprises a single 4-inch cone
driver with a 16-ohm voice coil mounted in a
sealed enclosure. The MM-4 draws 150 watts
peak from the line, and produces 112.5 dB peak
SPL. Typically, with four MM-4s connected
in parallel on the line, the system requires a
direct drive power amplifier capable of 600
watts continuous output (49 volts rms) into
4 ohms.
The MM-4CEU is specifically designed and
required for use in an MM-4 loudspeaker
Extremely compact enclosure
Wide-range frequency response
Ultra-low distortion
Transformerless, wide-bandwidth signal
distribution
Amazing SPL/size ratio
features & benefits
Color matching available
Low distortion maximizes intelligibility
Effortlessly reproduces music as well as
speech
Flexible mounting options ease installation
Weather-resistant version available for
outdoor installations
MM-4 : Miniature Wide-Range Loudspeaker
DATASHEET
4.00" h x 4.00" w x 4.20" d excluding connector
(102 mm x 102 mm x 107 mm)
3 lbs 14 oz (1.76 kg)
Extruded aluminum
Black anodized; custom color available
Perforated metal screen
Two 3/8"-16 threaded side inserts; see below for a
description of mounting accessories Dimensions
Weight
Enclosure
Finish
Protective Grille
Mounting
to be adjusted using the power amplifier’s
attenuators. Typically, each channel of the
MM-4CEU can drive 12 or more amplifier
channels depending on the input impedance
of the amplifier.
The MM-4 enclosure’s black anodized extruded
aluminum acts as a sink to dissipate heat
from the driver voice coil. It can be ordered
custom-painted to match décor, and is fitted
with a perforated steel grille.
Two connector versions are available:
the sealed EN3 connector for outdoor
installations, and a Phoenix-style keyed
connector for use indoors. A MUB-MM4
U-bracket is available for mounting that affixes
to the cabinet with two 3/8"-16 screws and is
drilled to fit an OmniMount
® bracket. An optional
MMFA-MM4 flush mount assembly is available
for ceiling or wall mount applications.
applications
Space-sensitive fill for theatres
Easily concealed for on-stage effects
High-quality distributed systems, paging
and music
Background music systems in restaurants
and clubs
Exhibit audio for museum displays
High-quality corporate boardroom
installations
INDUSTRIAL SERIES
4.40"
(112 mm)
4.00"
(102 mm)
4.00"
(102 mm)
4.20"
(107 mm)
2.93"
(75 mm)
2.00" (51 mm)