Meyer Sound M1D - Manual (Page 29)

22
APPENDIX B
23
APPENDIX B
M1D-SUB SPECIFICATIONS
ACOUSTICAL
Note: The low-frequency power response of the system will increase according to the length of the array.
Operating frequency range
32 Hz - 180 Hz
Note: Recommended maximum operating frequency range. Response depends upon
loading conditions and room acoustics.
Frequency response 35 Hz - 160 Hz ±4 dB
Note: Free field, measured with 1/3 octave frequency resolution at 4 meters.
Phase response 50 Hz - 120 Hz ±45°
Maximum peak SPL 130 dB at 1 m
Note: Measured with music at 1 meter.
Dynamic range >110 dB
Horizontal coverage 360°
Vertical coverage Varies, depending on array length and configuration.
TRANSDUCERS
Low frequency (front)
Two 10" cone drivers with neodymium magnets
Nominal impedance: 4 Ω
Voice coil size: 2"
Power-handling capability: 400 W (AES)
Note: Power handling is measured under AES standard conditions: transducer driven
continuously for two hours with band limited noise signal having a 6 dB peak-average ratio.
AUDIO INPUT
Type
Differential, electronically balanced
Max. 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 -
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 <80 kHz, integral to signal processing
Nominal input sensitivity 0 dB V (1 V rms, 1.4 pk) continuous is typically the onset of TPL limiting for 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 ohms in order to produce maximum peak SPL over the operating bandwidth of the
loudspeaker.
AMPLIFIERS
Amplifier type
Two-channel complementary MOSFET output stages (class AB/bridged)
Output power 450 W total
Note: Wattage rating is based on the maximum unclipped burst sine-wave rms voltage the
amplifier will produce into the nominal load impedance — both channels 30 V rms (42 V pk).
THD, IM TIM < .02%
Load capacity 4 Ω each channel
Cooling Forced air cooling over amplifier heatsink