The Meyer Sound UPA-1P is distinguished by the extraordinarily smooth
and predictable behavior of its proprietary high-frequency horn. The result
of intensive research in Meyer Sound’s anechoic chamber, the patented
UPA-1P horn design exhibits constant Q. The beamwidth remains consistent
within close tolerances, in both the horizontal and vertical planes and
across the horn’s operating frequency range of 1200 Hz to 18 kHz.
The result is uniform attenuation of all frequencies outside the specified
beamwidth with minimal side lobing. Uniformly predictable polar behavior
takes much of the guesswork out of system design and assures arrays that
exhibit minimal destructive interference.
The Meyer Sound UPA-1P is biamplfied with a proprietary two-channel,
class AB/bridged power amplifier with complementary MOSFET output stages.
Total peak power output is 550 watts; audio is processed through an electronic
crossover and correction filters for phase and frequency response, as
well as driver protection circuitry. Phase-corrected electronics ensure
flat acoustical amplitude and phase response, resulting in exceptional
impulse response and precise imaging. The field-replaceable amplifier/processing
package incorporates Meyer Sound’s Intelligent AC™, which
auto-selects the correct operating voltage, suppresses high voltage transients,
filters EMI and provides soft-start power-up. The high commonmode rejection
of the laser-trimmed differential input circuit permits long signal runs
through a simple shielded twisted-paircable. Audio input modules accommodate
a range of applications. The standard version offers looping XLR input
and output connectors, while an enhanced looping version adds polarity
switching (the looping output is not affected) and input attenuation (0
dB to -18 dB). A summing mono version with two inputs is also available.
The durable trapezoidal enclosure is covered with a black textured hard-shell
finish. A protective hex-stamped steel grille and charcoal grey foam cover
are included. Standard rigging points are four ring and stud pan fittings
(two each, top and bottom) with load rating of 420 lbs (190.51 kg) at
a 5:1 safety factor. Adjustable yokes and pole mount adaptors are available.
Options include weather protection, custom color finishes, and cabinets
with no handles for fixed applications requiring specific cosmetics. The
UPA-1P is compatible with the RMS™ remote monitoring system, which
offers comprehensive monitoring of system parameters on a Windows®-based