Meyer Sound Portable Speaker UPM 1 User Manual

Features  
Ultra-compact  
Lightweight  
Efficient high power  
Versatile  
UltraSeries™  
Reinforcement  
Loudspeaker  
Uncompromised quality  
Even dispersion  
Long-term reliability  
UPM-1  
Applications  
Music playback in small clubs  
Multi-channel AV playback  
Side fill in live music clubs  
Stage monitoring  
Delayed fill in installations  
Paging and announcing  
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6
4
2
0
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Inches  
Designed for sound reinforcement  
applications requiring minimum size, the  
UPM-1 delivers high sound pressure levels  
The rugged cabinet is easily handled  
and installed. It has three 38"-16 threaded  
rigging points, and may be mounted on a  
with very low distortion and extremely even stand. An optional steel bracket facilitates  
coverage in both axes.  
mounting in permanent installations.  
The UPM-1 system requires a high-  
Suitable for a wide range of applica-tions  
from music playback and delay fill systems quality professional power amplifier cap-  
to stage monitoring, the UPM-1 features  
able of delivering 125 watts continuously  
outstanding low-frequency performance in into 16 ohms, with a signal voltage gain  
an unusually compact package. Its ultra-  
flat frequency response simplifies room  
equalization requirements and ensures  
high gain-before-feedback.  
of 20 dB (minimum) to 30 dB (maximum).  
The loudspeaker consists of two 5-inch  
low-frequency cone drivers in a vented  
enclosure, and a 2 by 5-inch horn-loaded  
piezoelectric high-frequency driver with  
passive crossover.  
Meyer Sound Laboratories, Inc.  
2832 San Pablo Avenue  
Berkeley, CA 94702  
(510) 486-1166  
FAX (510) 486-8356  
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The P-1A Control  
Electronics Unit  
6
5
8
4
3
2
1
Lo Cut  
Flat  
10  
20  
Power  
Sense Limit  
0
UltraSeries™ P-1A  
Attn dB  
drivers, and limits the signal output when  
the safe operating limits of the drivers are  
exceeded. Until the onset of overload, the  
SpeakerSense circuitry has no effect on the  
signal.  
Six stages of Meyers exclusive comple-  
mentary phase equalization in the P-1A  
Control Electronics Unit give the UPM-1  
flat frequency response with outstanding  
phase characteristics.  
The UPM-1 operates as a system  
with the P-1A Control Electronics Unit.  
Optimized for the UPM-1 and pre-aligned  
at the factory, the P-1A contains frequency  
response and phase response alignment  
circuitry, and Meyer Sounds exclusive  
SpeakerSensedriver protection circuitry,  
incorporating both peak and RMS signal  
limiting.  
SpeakerSense protects the UPM-1  
A single-channel device operating at line  
level, the P-1A is the final component in  
the signal chain before the amplifier.  
loudspeaker components from damage due  
to overheating under high power condi-  
tions. This unique circuit continuously  
monitors the power applied to the UPM-1  
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Meyer Sound Laboratories has  
devoted itself to designing,  
Architectural and  
Engineering Specifications  
UPM-1⁄P-1A  
manufacturing, and refining com-  
ponents that deliver superb sonic  
reproduction. Every part of every  
component is designed and built  
to exacting specifications and  
undergoes rigorous, comprehen-  
sive testing in the laboratories.  
The ultra-compact, high-power rein-  
automatically activates under high power  
forcement speaker system shall be a passive conditions, RMS limiter which protects  
Research remains an integral,  
driving force behind all produc-  
tion. Meyer strives for sound  
quality that is predictable and  
neutral over an extended lifetime  
and across an extended range.  
3-way type with two 5-inch low-frequency  
loudspeakers, front mounted in a ducted  
brass-reflex hardwood plywood enclosure  
with a high-frequency piezo-electric driver  
mounted on a 2" x 5" horn. The enclosure  
shall be fitted with three 38"–16 threaded  
mounting points, and shall operate with  
a separate Control Electronics Unit.  
The Control Electronics Unit shall con-  
tain a power supply capable of operating  
from a 120/240V AC 50/60 Hz line, equal-  
ization circuitry for amplitude and phase  
alignment, protection circuitry which  
the speakers from overheating, active bal-  
anced input, active push-pull output, and  
LED indicators for power on and limiters.  
Total harmonic distortion at + 26 dBu  
at the balanced output loaded with 10k  
shall be less than .1% at 1kHz. The “A-  
weighted noise level shall be at least  
105 dB below maximum rated output  
of +26 dBu.  
The speaker system combined with a  
125W (16 ohm rating) amplifier shall  
meet the following performance criteria:  
Frequency response, 60 Hz to 20 kHz plus  
or minus 4 dB measured in half space  
1
at 1 meter on axis with 3 octave pink  
noise; output of 108 dB SPL measured at  
1 meter on axis with peaks of 118 dB SPL  
when driven with “A-weighted noise.  
Distribution pattern, 80 degrees horizon-  
tal by 60 degrees vertical.  
Speaker enclosure dimensions shall be  
634" W x 1818" H x 718" D, weight 16 lbs  
(7.3 kg).  
Control Electronics Unit dimensions  
shall be 19" W x 134" H x 734" D, weight  
7lbs (3.2 kg).  
The speaker enclosure shall be the Meyer  
Sound UPM-1. The Control Electronics  
Unit shall be the Meyer Sound P-1A.  
Sound  
engineering  
for the art  
and science  
of sound.  
Meyer Sound Laboratories, Inc.  
2832 San Pablo Avenue  
Berkeley, CA 94702  
(
510) 486-1166  
FAX (510) 486-8356  
© 1989 Meyer Sound  
04066036.01C  
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