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
- 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)
- Low Frequency:
- 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
