The Meyer 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 Meyer UPM-1P loudspeaker provides vocalrange reinforcement as a small PA system, or as a fill or delay loudspeaker in larger indoor or outdoor systems.
The Meyer 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.
Specifications
| Operating Frequency Range | 75 Hz - 20 kHz |
| Frequency Response | 80 Hz - 16 kHz ±4 dB |
| Phase Response | 300 Hz - 18 kHz ±60° |
| Maximum Peak SPL | 123 dB |
| Dynamic Range | 110 dB |
| Horizontal Coverage | 100° |
| Vertical Coverage | 100° |
| Crossover | 1300 Hz |
| Low Frequency | Two 5" cone drivers Nominal impedance: 8 Ω Voice coil size: 1" Power-handling capability: 200 W (AES)6 |
| High Frequency | One 1" metal dome tweeter Nominal impedance: 8 Ω Voice coil size: 1" Diaphragm size: 1" Power-handling capability: 20 W (AES)6 |
| Audio Input Type | Differential, electronically balanced |
| Maximum Common Mode Range | ±15 V DC, clamped to earth for voltage transient protection |
| Connectors | Female XLR input with male XLR loop output |
| Input Impedance | 10 kΩ differential between pins 2 and 3 |
| 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 - (optional polarity reversal switch)7 Case: Earth ground and chassis |
| DC Blocking | Differential DC blocking up to maximum common mode voltage |
| CMRR | 50 dB, typically 80 dB (50 Hz – 500 Hz) |
| RF Filter | Common mode: 425 kHz; Differential mode: 142 kHz |
| TIM Filter | |
| Nominal Input Sensitivity | 0 dBV (1 V rms, 1.4 V pk) continuous average is typically the onset of limiting for pink noise and music |
| Input Level | Audio source must be capable of producing a minimum of +20 dBV (10 V rms, 14 V pk) into 600 Ω to produce maximum peak SPL over the operating bandwidth of the loudspeaker |
| Amplifiers Type | Complementary MOSFET output stages (class AB/bridged) |
| Output Power | 350 W total |
| THD, IM, TIM | |
| Load Capacity | 4 Ω low channel, 8 Ω high channel |
| Cooling | Convection |
| Connector | PowerCon with looping output |
| Voltage Selection | External 115/230 V AC switch (100 V AC version available)9 |
| Operating Voltage Ranges | 105 V AC - 130 V AC (115 V AC); 210 V AC - 260 V AC (230 V AC) |
