Text preview for : hfe_mcintosh_mc250_service_info_23l48_on.pdf part of . Rare and Ancient Equipment hfe mcintosh mc250 service info 23l48 on . Rare and Ancient Equipment Mc INTOSH Audio MC250 hfe_mcintosh_mc250_service_info_23l48_on.pdf
Back to : hfe_mcintosh_mc250_servic | Home
MC 250
SERVICE INFORMATION
S T A R T I N G WITH S E R I A L N O . 23L48
MCINTOSH LABORATORY INC. 2 CHAMBERS STREET BINGHAMTON, NEW YORK
MC 250
ELECTRICAL SPECIFICATIONS
Power Output:
100 watts RMS continuous, 50 watts per channel operating
simultaneously, into 4 ohm, 8 ohm, or 16 ohm loads.
Harmonic Distortion:
Less than 0.25% at rated power output from 20Hz to 20,000Hz.
Intermodulation Distortion:
Less than 0.25% for any combination of frequencies between
20 Hz and 20,000 Hz.
Frequency Range:
At rated output both channels: +0 to -0.25dB from 20Hz
through 20,000Hz.
Output Damping Factor:
Greater than 10 for any output tap.
Input Sensitivity & Impedance:
Input sensitivity is 0.5 volts. Input impedance Is 200K ohms.
Hum & Noise :
Greater than 90dB below rated output.
Power Requirements:
117 volts AC,50-60Hz, 50 watts at zero signal output, 250
watts at rated output.
MC 250
MC 250
LEFT CHANNEL POWER OUTPUT PRINTED CIRCUIT BOARD 043-916
RIGHT CHANNEL POWER OUTPUT PRINTED CIRCUIT BOARD 043-916
INPUT SECTION PRINTED CIRCUIT BOARD 043-795
MC 250
MC 250
MC 250
SCHEMATIC NOTES
1. Unless otherwise s p e c i f i e d : R e s i s t a n c e v a l u e s are i n ohms, 1 / 2 w a t t , and
10% t o l e r a n c e ; c a p a c i t a n c e v a l u e s s m a l l e r than 1 are i n m i c r o f a r a d s (