Mc Intosh MR78

Maintenance repair

U.S.A. 1972

FM stereo tuner
Sensitivity 2.5 µV (1.9 µV max)
Normal selectivity 7 dB
Narrow selectivity 22 dB
Super-Narrow selectivity 55 dB
Signal to noise ratio 75 dB for 100% modulation
Harmonic distortion 0.2% from 10Hz to 18kHz
Harmonic distortion 0.05% at 1 kHz
2.5 dB capture ratio
Image rejection 100 dB
Spurious rejection 100 dB
Stereo separation 40 dB