McIntosh C26 Service Manual
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Extracted text from McIntosh C26 Service Manual (Ocr-read)
Page 1
IIIIInIUEII
026
PREAMPL IF [ER
SERVICE INFORMATION
STARTING WITH SERIAL no. IOPOI
McINTOSH LABORATORY INC. 2 CHAMBERS STREET BINGHAMTON, NEW YORK
9Z3
Page 2
C
26
ELECTRICAL SPECWICATIONS
FREQUENCY RESPONSE
+0 to -O.5dB from ZOHZ to 20,000Hz
DISTORTION
Less than 0.1% at 2.5 volts output, 20Hz to
20,000HZ
INPUT SENSITIVITY (phono l and phone 2)
2 millivolts for 2.5 volts output at lkHz
INPUT SENSITIVITY (aux, tape 1, tape 2, tuner)
0.25 volts for 2.5 volts output
HUM AND NOISE (phone 1 and phono 2)
7th below rated output for a 10 millivolt
input signal
HUM AND NOISE (aux, tape 1, tape 2, tuner)
85dB below rated output
OUTPUT (main)
2.5 volts with rated input. Up to 10 volts
can be developed without distortion.
OUTPUT (tape)
0.25 volts with rated input. Phono input sig-
nal of lO millivolts produces 1.2 volts output.
OUTPUT (center channel)
2.5 volts with rated input on both channels.
A level control adjusts output from -6dB
to +6dB with respect to main output.
BASS CONTROL
-20dB to +16dB at 2OHz
TREBLE CONTROL
:20dB at 20,000HZ
LF FILTER
Flat or roll off below 50Hz, down 12dB at 20Hz
HF FILTER
Flat or roll of above 5,000Hz, down l2dB at
20,000Hz