Meyer Sound UPJ-1P: The Ultimate Mid-Sized Point-Source Loudspeaker
The UPJ-1P is a powerhouse of a loudspeaker that combines the best of self-powered systems with the flexibility of a VariO rotatable horn. It's compact, lightweight, and packs a punch with a robust linear peak SPL output of 125 dB. Whether you're setting up an audio-visual presentation, a small to medium-sized main sound reinforcement system, or need fill, delay, effects, under-balcony, or under-canopy coverage, this speaker is your go-to solution.
Key Features:
- • Exceptional Fidelity: Experience crystal-clear sound with extended high frequencies for enhanced performance.
- • Compact yet Powerful: Despite its small size, it delivers surprising power capability.
- • Versatile Coverage: The VariO horn allows for versatile coverage options, whether horizontal or vertical.
Specifications:
- Acoustical:
- Operating Frequency Range: 55 Hz - 20 kHz
- Frequency Response: 66 Hz - 18 kHz ±4 dB
- Phase Response: 750 Hz - 18 kHz ±45°
- Linear Peak SPL: 125 dB with 18 dB crest factor (M-noise), 122.5 dB (Pink noise), 125 dB (B-noise)
- Coverage: 80° x 50° (rotatable horn)
- Default Horn Alignment: 50°
- Transducers:
- Low Frequency: One 10-inch cone driver with neodymium magnet; 4 nominal impedance
- High Frequency: One 3-inch diaphragm compression driver; 16 nominal impedance
- Audio Input:
- Type: Differential, electronically balanced
- Maximum Common Mode Range: ±15 V DC, clamped to earth for voltage transient protection
- Connectors: XLR 3-pin female input with male loop output
- Input Impedance: 10 kΩ differential between pins 2 and 3
- Wiring:
- Pin 1: Chassis/earth through 220 k, 1000 pF, 15 V clamp network to provide virtual ground lift at audio frequencies
- Pin 2: Signal +
- Pin 3: Signal - (optional polarity reversal switch)
- Case: Earth ground and chassis
- Nominal Input Sensitivity: 0 dBV (1.0 V rms) continuous is typically the onset of limiting for noise and music
- Input Level: Audio source must be capable of producing of +20 dBV (10 V rms) into 600 to produce the maximum peak SPL over the operating bandwidth of the loudspeaker.
- Amplifier:
- Type: Two-channel complementary MOSFET output stages (class AB/bridged)
- Total Output Power: 550 W peak
- THD, IM, TIM: < 0.02%
- Cooling: Forced air cooling over amplifier heat sink
- AC Power:
- Connectors: powerCON 20 input with loop output
- Automatic Voltage Selection: 90–264 V AC
- Safety Rated Voltage Range: 100–240 V AC, 50–60 Hz
- Turn-on and Turn-off Points: 90 V AC turn-on, no turn-off; internal fuse-protection above 265 V AC
- Current Draw:
- Idle Current: 0.41 A rms (115 V AC); 0.33 A rms (230 V AC); 0.42 A rms (100 V AC)
- Maximum Long-Term Continuous Current (>10 sec): 3.2 A rms (115 V AC); 1.6 A rms (230 V AC); 3.7 A rms (100 V AC)
- Burst Current (<1 sec): 5 A rms (115 V AC); 2.5 A rms (230 V AC); 5.8 A rms (100 V AC)
- Maximum Instantaneous Peak Current: 17 A pk (115 V AC); 8.5 A pk (230 V AC); 20 A pk (100 V AC)
- Inrush Current: 15 A pk (115 V AC); 13 A pk (230 V AC); 15 A pk (100 V AC)
- Physical:

The Meyer Sound UPJ-1P is perfect for a variety of audio setups. Ideal for event organizers, AV professionals, and venue owners. With dimensions of W: 11.15 in (283 mm) x H: 22.47 in (571 mm) x D: 12.23 in (311 mm) and weighing 46 lb (20.87 kg), it's easy to handle and install. Use it for audio-visual presentations, small to medium-sized main sound reinforcement systems, or for fill, delay, effects, under-balcony, or under-canopy coverage. Its compact size makes it suitable for both indoor and outdoor events.