User manual MCINTOSH C27

[. . . ] THE McINTOSH C27 SOLID STATE STEREO PREAMPLIFIER Reading Time: 28 Minutes Price: $2-00 WARNING: TO PREVENT FIRE OR SHOCK HAZARD, DO NOT EXPOSE THIS UNIT TO RAIN OR MOISTURE. The Mclntosh you have purchased has a serial number located on the rear panel of the chassis. The model and serial number are important to you for any future service. Your C 27 Stereo Preamplifier will give you many years of pleasant and satisfactory performance. If you have any questions, please contact: Contents SERVICE CONTRACT . 2 Chambers Street Binghamton, New York 13903 Phone: 607-723-3512 Take Advantage of 3 years of FREE Service . [. . . ] THE PUSHBUTTONS The C 27 is designed to be used with one or two tape recorders. The front panel pushbuttons permit normal playback of either recorder, monitor as recordings are being made on either recorder, or copying tapes from one recorder to another while listening to a separate program. TAPE MONITOR To monitor while recording from any source chosen on the INPUT SELECTOR, your tape recorder must have separate record and playback heads and separate electronics. The MONITOR switches let you monitor the quality of tape recordings made during the recording process. When the chosen TAPE MONITOR pushbutton is in the IN position the sound from the tape as it passes the playback head is heard a moment after it is recorded. When the switch is in the OUT position, the program that is being recorded is heard. The program source selection by the INPUT SELECTOR is fed to the power amplifiers and heard through the loudspeakers. The program source becomes the recorded tape on the recorder connected to TAPE 1 INPUT. The recorded program from tape recorder 1 is fed to the power amplifiers and heard from the loudspeakers. In the PUSHBUTTON IN position, a rectangle is lighted above the pushbutton. To listen to other sources the pushbutton must be out and the light off. TAPE 2 MONITOR A second tape recorder can be operated in the same manner using pushbutton TAPE 2 MONITOR. Use the front panel pushbutton TAPE 2 to playback from a tape recorder plugged into the rear panel TAPE 2 INPUT jacks. HOW TO COPY TAPE, TAPE COPY 1 -> 2 Put the tape to be copied on the recorder connected to TAPE 1 INPUT. The signal available at the TAPE 2 OUTPUT jacks is the playback of TAPE 1. The source tape on tape recorder 1 can be heard by pressing in the TAPE 1 MONITOR pushbutton. The recording can be monitored by pressing in the TAPE 2 MONITOR pushbutton. Instantaneous comparison on the recorded program with the original can be heard. TAPE COPY 2 -> 1 When pushed IN the TAPE 2 OUTPUT jacks are connected to the TAPE 1 INPUT jacks without affecting the program heard from the speakers. In this position a copy of the program on tape recorder 2 can be made on tape recorder 1. To monitor the tape copy procedures use the TAPE MONITOR pushbuttons. POWER The POWER switch energizes the C 27 circuits and connects AC power to the black rear panel AC power outlets. A lighted rectangle above the ON POWER switch indicates the AC power to the system is turned on. HEADPHONES The front panel HEADPHONE jack has been designed to feed low impedance dynamic headphones. Electrostatic headphones generally require higher power than dynamic headphones. [. . . ] As the control is advanced clockwise the volume level reduces but loudness compensation is introduced which maintains the low-frequency output at a higher level than the mid and high frequency output. This action complements the human ear response characteristics, the Fletcher Munson effect. Loudness compensation is provided for a wide range of listening levels. BALANCE CONTROL Rotating the BALANCE control to the left or right allows you to balance the level of the two channels. [. . . ]