Meyer Sound UM-1P Stage Monitor

Meyer Sound UM-1P Stage Monitor, 12 inch floor monitor

Including flightcase when buying 2 pieces

The UM-1P self-powered stage monitors are designed for high-level, full-bandwidth monitoring, cleanly reproducing stage mixes that include vocals and musical instruments. These units provide efficient response down to 60 Hz. The compact enclosure houses a 12-inch cone driver and a 3-inch-diaphragm compression driver. The combination of high-performance drivers and perfectly matched drive electronics yields flat amplitude and phase response plus near-perfect impulse response over the full audio bandwidth with benefits including lower susceptibility to feedback. Maximum SPL is 133 dB at one meter, with exceptionally low  distortion.
The UM-1P provides a narrow, symmetrical beamwidth of 45 degrees horizontal and vertical, allowing close placement of monitors with minimal interaction between them.

The constant-Q design of the high-frequency horns provides uniform beamwidth across the entire operating range in both the horizontal and vertical planes. Attenuation outside the beamwidth is rapid and uniform at all frequencies, with minimal side lobing.
Each driver is individually powered by a dedicated channel of the proprietary class AB/bridged amplifier with complementary MOSFET output stages. Total power is 550 watts. The incoming audio signal is processed  through an electronic crossover and correction filters for flat phase and frequency response as well as for driver protection. Phase-corrected electronics ensure flat acoustical amplitude and phase response, resulting in exceptional impulse response and precise imaging.

Acoustical : 

• Operating Frequency Range : 60 Hz – 18 kHz
• Frequency Response : 65 Hz – 17 kHz ±4 dB
• Phase Response : 500 Hz – 16 kHz ±35°
• Maximum Peak SPL : 133 dB
• Dynamic Range : >110 dB
• Crossover : 1000Hz

Transducers : 

• Low frequency :
  • One 12″ cone driver
  • Nominal impedance: 2 Ω Voice coil size: 3″
  • Power-handling capability: 400 W (AES)
• High frequency :
  • One 3″ compression driver
  • Nominal impedance: 16 Ω Voice coil size: 3″
  • Diaphragm size: 3″
  • Exit size: 1.4″ throat
  • Power-handling capability: 100 W (AES)

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 or VEAM all-in-one (integrates AC, audio and network)
• 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)6
  • 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 : <80 kHz, integral to signal processing
• 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

Amplifier : 

• Type : Two-channel complementary MOSFET output stages (class AB/bridged)
• Output Power : 550 W total
• THD, IM, TIM : <.02 %
• Load Capacity : 2 Ω low channel, 16 Ω high channel
• Cooling : Convection; 24 V DC output for optional external fan