Overview
The UPM-1P is a remarkably compact, self-powered, professional sound reinforcement loudspeaker system. It is ideally suited to applications requiring a relatively small and inconspicuous loudspeaker that can also provide high sound pressure levels, extremely low distortion, and uniform directional control.
The UPM-1P loudspeaker provides vocal-range 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 UPM-1P high-frequency section comprises a 1-inch metal dome tweeter on a symmetrical, constant-directivity, high-frequency horn with 100° beamwidth. At lower frequencies, sophisticated phase-correction circuitry ensures true point-source 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, along with an active crossover, driver protection voltage limiters, and frequency- and phase-response alignment circuitry. A laser-trimmed differential input stage affords superior common-mode rejection to allow long signal runs through shielded twisted-pair 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 loudspeaker’s integral power supply suppresses high-voltage transients, while two PowerCON AC connectors facilitate AC looping.
Meyer Sound coats the rugged cabinet with a slightly textured black finish. Mounting is via three 3/8-inch-16 or metric M10 threaded recessed nut plates. Optional U-bracket, yoke, and pole-mount hardware are available. The optional RMS™ remote monitoring system module provides comprehensive monitoring of loudspeaker parameters from a Mac® or Windows®-based computer running Compass® control software.
Options available for the UPM-1P cabinet include weather protection and finishes in custom colors for fixed installations and situations requiring specific cosmetics.
Applications
- Frontfill and under balcony
- Theatrical sound reinforcement
- Portable and installed audio-visual systems
- Cinema surround sound and effects
- Compact voice reinforcement systems
Features and Benefits
- Exceptional fidelity and power capability delivered in an ultracompact package
- Wide, symmetrical pattern covers broad listening areas
- Unique crossover design eliminates combing for consistent midrange response
- Metal dome driver provides exceptionally smooth high-frequency characteristic
Specifications
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ACOUSTICAL1 |
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Operating Frequency Range2 |
75 Hz – 20 kHz |
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Frequency Response3 |
80 Hz – 16 kHz ±4 dB |
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Phase Response |
415 Hz – 16 kHz ±45° |
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Linear Peak SPL4 |
118.5 dB with crest factor >14 dB (M-noise), 113 dB (Pink noise), 115.5 (B-noise) |
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COVERAGE |
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Horizontal Coverage |
100° |
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Vertical Coverage |
100° |
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TRANSDUCERS |
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Low Frequency5 |
Two 5-inch cone drivers; 8 Ω nominal impedance |
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High Frequency |
One 1-inch metal dome tweeter; 8 Ω nominal impedance |
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AUDIO INPUT |
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Type |
Differential, electronically balanced |
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Maximum Common Mode Range |
±15 V DC, clamped to earth for voltage transient protection |
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Connectors |
XLR 3-pin female input with male loop output; optional 5-pin connectors accommodate both balanced audio and RMS signals. |
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Input Impedance |
10 kΩ differential between pins 2 and 3 |
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Wiring |
Pin 1: Chassis/earth through 220 kΩ, 1000 pF, 15 V clamp network to provide virtual ground lift at audio frequencies Pin 2: Signal + Pin 3: Signal – Case: Earth ground and chassis |
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Nominal Input Sensitivity |
0 dBV (1.0 V rms) continuous is typically the onset of limiting for noise and music |
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Input Level |
Audio source must be capable of producing of +20 dBV (10 V rms) into 600 Ω to produce the maximum peak SPL over the operating bandwidth of the loudspeaker. |
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AMPLIFIER |
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Type |
Complementary MOSFET output stages (class AB/bridged) |
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Total Output Power6 |
650 W peak |
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THD, IM, TIM |
< 0.02% |
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Cooling |
Convection |
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AC POWER |
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Connector |
powerCON input with loop output |
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Voltage Selection |
External 115/230 V AC switch (100 V AC version available)7 |
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Safety Rated Voltage Range |
Input rating: 115/230 V AC, 50–60 Hz, 3 A MAX; Loop output rating: 115/230 V AC, 50–60 Hz, 12 A MAX |
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Turn-on and Turn-off Points |
Fuse-protected above 135 V AC (115 V AC switch position) and 265 V AC (230 V AC switch position) |
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CURRENT DRAW |
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Idle Current |
0.13 A rms (115 V AC); 0.065 A rms (230 V AC); 0.15 A rms (100 V AC) |
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Maximum Long-Term Continuous Current (> 10 sec) |
1 A rms (115 V AC); 0.5 A rms (230 V AC); 1.2 A rms (100 V AC) |
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Burst Current (< 1 sec)8 |
1.3 A rms (115 V AC); 0.65 A rms (230 V AC); 1.5 A rms (100 V AC) |
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Maximum Instantaneous Peak Current |
2.9 A pk (115 V AC); 2 A pk (230 V AC); 3.3 A pk (100 V AC) |
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Inrush Current |
18 A pk (115 V AC); 12 A pk (230 V AC); 15 A pk (100 V AC) |
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RMS NETWORK (OPTIONAL) |
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Two-conductor twisted-pair network that reports all operating parameters of amplifiers to system operator’s host computer. |
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PHYSICAL |
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Dimensions |
W: 6.93 in (176 mm) x H: 18.00 in (457 mm) x D: 7.60 in (193 mm) |
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Weight |
22 lb (9.98 kg) |
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Enclosure |
Premium multi-ply birch with slightly textured black finish |
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Protective Grille |
Powder-coated, hex-stamped steel with black mesh |
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Rigging |
Three 3/8-inch-16 or metric M10 nut plates |
