MM-4XPD : 48 V DC Directional Miniature Self-Powered Loudspeaker
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Features & Benefits
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Directional hypercardioid pattern provides 10dB of attenuation between the front and the back of the loudspeaker, even at low frequencies
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Directional pattern reduces excitation of the room, desirable in highly reverberant spaces
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Extremely compact size fits in small spaces
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Patent pending technology that does not require additional tranducers to create directional effect, reducing energy, weight and volume
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A convenient u-bracket allows for quick and easy mounting
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Applications
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Restaurants, bars and highly reverberant public spaces
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Large distributed systems
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Trade show presentations
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The MM-4XPD directional miniature self-powered loudspeaker meets similar performance standards as the MM-4XP, with the added advantage of a directional hypercardioid pattern. The MM-4XPD patent
pending technology achieves a high degree
of attenuation between the front and the
back of the loudspeaker and passively
achieves a directional polar response.
Even at low frequencies this breakthrough
technology achieves attenuation in the order
of 10 dB on the back of the loudspeaker. At
higher frequencies the loudspeaker retains
directionality. All of this is achieved with
a single driver and avoids the complexity
and cost associated with a second driver
and dedicated amplification and signal
processing.
The MM-4XPD directional loudspeaker
was specifically designed for high-quality
distributed systems in highly reverberant
spaces. The directional polar pattern of the
loudspeaker at low frequencies significantly
reduces the excitation of the room and
increases the intelligibility of the system.
The single 4-inch cone transducer,
manufactured at Meyer Sound's Berkeley
factory, delivers an impressive maximum
peak SPL of 113 dB, and has a wide
operating frequency range of 120 Hz to 18
kHz with very low distortion. The MM-4XPD
exhibits the same high intelligibility and flat
frequency and phase responses for which
Meyer Sound loudspeakers are known.
Its flexible and easy-to-configure
mounting options, as well as its ability
to effortlessly reproduce both speech and
music, make it an excellent choice for
large distributed applications as well as
theatrical presentations, and small portable
systems for corporate AV solutions where
intelligibility is critical.
The MM-4XPD's amplifier and signal-
processing circuits are designed to store DC
power and tolerate voltage drops, thereby
accommodating light-gauge cables and long
cable runs. The MM-4XPD receives balanced
audio and DC power from a SwitchCraft EN3
connector on its rear panel.
MM-4XPD loudspeaker systems require an
external MPS Power Supply. The MPS-488
rackmount 8-channel power supply is
ideal for larger installations with multiple
loudspeakers and distributes power and
audio signal, while the compact MPS-481 is
designed for powering single loudspeakers
individually.
The MM-4XPD's extruded aluminum
enclosure acts as a heat sink to dissipate
heat from the driver's voice coil. The
enclosure is available in standard white or
black anodized finishes with a perforated
steel grille. The MUB-MM4XP U-bracket is
available for mounting the loudspeaker on
walls and ceilings at adjustable angles.
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