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Specifications
M1 ACTIVE REFERENCE MANUAL 37
Crossover section
Crossover type: Eighth order, 48dB/octave Linkwitz-Riley @
1500Hz
Input Impedance: 20kΩ balanced 10kΩ unbalanced
Low Frequency Filter: 2nd order optimal Q high pass filter at 50Hz
with +1dB boost
Amplifier Section
Low Frequency Amplifier
Rated power output: 75 watts, 6Ω load
Distortion: <0.03% THD @ 30 watts/8Ω 20Hz-20kHz
Slew rate: 19V/µsec
Signal-to-Noise ratio: >110dB referenced to 60 watts @ 8Ω, “A”
weighted, 1kHz
High Frequency Amplifier
Rated Power Output: 25 watts, 4Ω load
Distortion: 0.06% THD @ rated power
Slew rate: 9V/µsec
Signal-to-Noise ratio: >112dB @ rated output
Acoustic Section
Free-Field Frequency Response: ±2dB, 50Hz to 20KHz
Lower Cutoff Frequency: 38Hz -10dB
Upper Cutoff Frequency: 23.5KHz –10dB
Maximum Peak SPL per pair: ≥ 118dB SPL @ 1m
Maximum short term SPL: 80Hz to 3.0KHz ≥ 105dB SPL @ 1m
General
Power Consumption: 120 watts with musical program, loud mix
12 watts quiescent (idle)
AC Dropout Voltage: 120V AC version: 80V AC
240V AC versions: 160V AC
Weight: 19.5 lbs. (8.9 kg) each
Dimensions (H x W x D): 15” (381mm) x 8.5” (216mm) x 9.75” (248mm)
I
NDEX
AC power, 12, 22, 37
amplifiers, 10, 11, 37
balanced, 23
biamplified, 10
crossover, 10
crossover, 37