the UPA-1P horn in an
anechoic chamber by
measuring coverage patterns
using angular and frequency
resolutions of 1° and
1
⁄36
octave, respectively. The UPA-1P
horn provides a much wider
horizontal, and slightly
narrower vertical beam width
(100°H x 40°V) than the UPA-2P.
Both speakers share the
following remarkable attributes:
• uniform frequency response
within the beam width
• rapid and uniform amplitude
attenuation for all frequen-
cies outside the beam width
• minimal side lobes
The UPA-P Series is ideally
suited for small PA applications
requiring complete coverage
with a compact, high-powered
system, and also make
excellent under-balcony, down-
fill.
The UPA-P’s integrated
electronics employs the
Intelligent AC power supply,
which auto-selects the correct
The Meyer UPA-P Series self-
powered loudspeakers (UPA-1P,
UPA-2P) are more than powered
versions of the Meyer UPA-C
Series (UPA-1C, UPA-2C). The
UPA-P Series features phase-
corrected electronics that
produce flat acoustical phase
and amplitude responses,
resulting in exceptional system
impulse response and precise
imaging. Despite the inclusion
of amplification and control
electronics, the UPA-P is the
same size as, and only 10 lb.
heavier than the UPA-C.
Additionally, the UPA-P’s
advanced horn designs achieve
a consistent polar response
and smooth arraying behavior.
The beam width of a horn is
the angle at which the sound
pressure at a given frequency
decreases to half (–6 dB) its
on-axis amplitude. Existing
technologies produce horns
whose beam width varies over
the operating frequency range.
These horns also display non-
uniform frequency response
within, and significant side lobe
energy outside their beam
width. Both undesirable
characteristics, particularly
prevalent for horns with a wide
beam width, make array design
extremely problematic.
The UPA-P horns exhibit
constant Q: the beam width
remains consistent across the
horn’s operating frequency
range in both the vertical and
horizontal planes. The UPA-2P
uses the same horn as the
UPA-2C: the original design
achieved constant Q for its
narrow beam width (45°H x
45°V). Meyer Sound developed
FEATURES
operating voltage (facilitating
international use), suppresses
high voltage transients, and
provides soft-start power-up
(eliminating high inrush current).
The UPA-P can be equipped
to operate with the Remote
Monitoring System
™
(RMS)
network and software
application. The UPA’s are
shipped with one of two audio
input and control options. The
Basic module contains an XLR
input and a loop connector.
The second module provides
features that facilitate array
building and integration into
full-range systems without
incurring the cost of external
processors. These inter-
changeable modules can be
installed in the field with a
Phillips screwdriver. RMS
displays signal and power
levels, driver and cooling fan
status, limiter activity, and
amplifier temperature for all
speakers in the network on a
Windows-based PC.
Self-Powered Reinforcement Loudspeaker
UPA-1P & 2P
Integrated control
electronics and amplifiers
Modular audio
input options
Intelligent AC
™
System
Compatible with the
Remote Monitoring
System
™
(RMS)
Phase-corrected
Constant-Q Beam width
facilitates predictable
array design
High-Power, flat
frequency response
Meyer
Sound
Superior
engineering
for the art
and science
of sound.
PATENT PENDING
UPA-2P
UPA-1P
(2 pages)
(32 pages)
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