The Meyer Sound UPM-1P loudspeaker provides vocalrange
reinforcement as a small PA system, or as a fill or delay loudspeaker
in larger indoor or outdoor systems. A full-range system can be created
with the addition of an optional subwoofer.
The Meyer Sound UPM-1P high-frequency section comprises a 1-inch metal
dome tweeter on a symmetrical constant-directivity high-frequency horn
with 100-degree beamwidth. At lower frequencies, sophisticated phasecorrection
circuitry assures true pointsource performance without the off-axis cancellation
effects that plague customary dual-woofer designs. Two 5-inch low-frequency
cone drivers are driven in parallel at low frequencies to take advantage
of their combined acoustic output. To prevent destructive interference
and comb filtering effects in the mid-band frequencies close to the crossover
area, one of the drivers rolls off above 320 Hz.
Two channels of power amplification are provided (350 watts total), along
with an active crossover, driver protection voltage limiters, and frequency-
and phaseresponse alignment circuitry. A lasertrimmed differential input
stage affords superior common-mode rejection to allow long signal runs
through shielded twistedpair cable. The standard UPM-1P is switchable
between the 115 V AC and 230 V AC ranges. A 100 V AC version is also available.
The UPM-1P’s integral power supply suppresses high-voltage transients,
while two PowerCon AC connectors facilitate AC looping.
The rugged cabinet is coated with a textured black finish. Mounting is
via three 3/8"-16 or metric M10 threaded recessed nut plates. Optional
U-bracket, yoke, and pole-mount hardware is available. The UPM-1P loudspeaker
can be supplied with either the standard audio input module incorporating
looping XLR connectors, or an alternate that adds attenuation and a polarity
switch. The UPM-1P easily integrates with the RMS™ remote monitoring
system network and software (optional). RMS displays signal and power
levels, driver status, limiter activity, and amplifier temperature on
a remote Windows® computer.
Options available for the UPM-1P cabinet include weather protection
and finishes in custom colors for fixed installations and situations requiring
specific cosmetics.
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