Meyer Sound MJF-212A Powered Wedged Stage Monitor

Meyer Sound MJF-212A Powered Wedged Stage Monitor

The Meyer Sound MJF-212A is a self powered stage monitor loudspeaker designed to meet critical requirements in professional applications. Exhibiting flat amplitude and phase responses, full range bandwidth, and exceptional impulse response, the MJF-212A far exceeds the capabilities of conventional stage monitors while offering the simplicity of setup and operation provided by self-powered systems.

Features:

• High peak power ensures excellent transient response
• Flat frequency and phase responses afford high levels of gain before feedback
• Low profile preserves sightlines
• Symmetrical, medium-Q pattern provides even coverage

Specifications:

• Acoustical:
  • Operating Frequency Range: 55 Hz - 18 kHz
  • Frequency Response: 60 Hz - 16 kHz ±4 dB
  • Phase Response: 500 Hz - 16 kHz ±45°
  • Maximum Peak SPL: 139 dB
  • Dynamic Range: >110 dB
• Coverage: 50° symmetrical
• Crossover: 1600 Hz
• Transducers:
  • Low Frequency:
    • Two high-power 12" cone drivers with neodymium magnets
    • Nominal impedance: 2 Ω Voice coil size: 4"
    • Power handling capability: 1200 W (AES)
  • High Frequency:
    • 4" compression driver
    • Nominal impedance: 8 Ω Voice coil size: 4"
    • Diaphragm size: 4"
    • Exit size: 1.5"
    • Power handling capability: 250 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 connector (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 -
  • Case: Earth ground and chassis
  • DC Blocking: Differential DC blocking up to max 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: Integral to signal processing (<80 kHz)
  • Nominal Input Sensitivity: 0 dBV (1 V rms, 1.4 V pk) continuous is typically the onset of limiting for noise and music
  • Input Level: Audio source must be capable of producing +20 dBV (10 V rms, 14 V pk) into 600 Ω in order to produce maximum peak SPL over the operating bandwidth of the loudspeaker
• Amplifier:
  • Type: Three-channel complementary MOSFET output stages (class AB/H)
  • Output Power: 1275 W (three channels; 2 x 500 W, 1 x 275 W)
  • Total Output: 2550 W peak
  • THD, IM, TIM: <.02%
  • Load Capacity: 2 Ω low channels; 8 Ω high channel
  • Cooling: Convection
• AC Power:
  • Connector: PowerCon with looping output or VEAM
  • Voltage Selection: Automatic, two ranges, each with high-low voltage tap (uninterrupted)
  • Safety Agency Rated Operating Range: 95 V AC - 125 V AC; 208 V AC - 235 V AC, 50/60 Hz
  • Turn-on and Turn-off Points: 85 V AC - 134 V AC; 165 V AC - 264 V AC
  • Current Draw: Idle Current: 0.650 A rms (115 V AC); 0.310 A rms (230 V AC); 0.760 A rms (100 V AC)
  • Max Long-Term Continuous Current (>10 sec): 4.67 A rms (115 V AC); 2.37 A rms (230 V AC); 5.25 A rms (100 V AC)
  • Burst Current (<1 sec): 7.90 A rms (115 V AC); 4.10 A rms (230 V AC); 9.24 A rms (100 V AC)
  • Ultimate Short-Term Peak Current Draw: 20 A pk (115 V AC); 10 A pk (230 V AC); 21.8 A pk (100 V AC)
  • Inrush Current: 10 A pk (115 and 100 V AC); 18 A pk (230 V AC)
• RMS Network (optional): Equipped with two-conductor twisted-pair network, reporting all operating parameters of amplifiers to system operator’s host computer
• Dimensions: 27.07" w x 16.11" h x 23.00" d (688 mm x 409 mm x 584 mm)
• Weight: 108 lbs. (49 kg)
• Enclosure: Premium birch plywood
• Finish: Black textured
• Protective Grille: Powder-coated hex-stamped steel, black mesh screen
• Audio Input: Female XLR input with male XLR loop output or VEAM all-in-one connector
• AC Power Connector: PowerCon® with looping output or VEAM all-in-one connector