Sony TC-150 - Section 4: Diagrams; Mounting Diagram

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A -B T ES T . ... Direct comporison of sound quality between
hi-ft components accomplished by switching from one
to anoth er.
ACOUSTI C FEEDBACK , . .. T he howling caused when a micro-
phone picks up vibrations from its own speaker system.
AM PLIFY . ... To increase levels, os with a volume contro l.
ATTENUATE .. . . To decrease leve l s, as with o volume control.
AUTO MA TIC SHUT-OFF .. .. A special sw itch on a tape r e-
corder which automatically stops the machine when
the tape breaks or runs out.
AZIMU TH ADJ US TM ENT. . . . The adjustment to pos 1 11on the
head gap exactly perpendiC1Jlar to the horizontal
base of the ta pe .
BAFFL E . . . . The ponel to which most speakers ore mou n ted,
usually the front panel of on enclosure.
BIAS . ... A high frequency alternating current fed into the
recording circuit and used as a carrier of the audio
signals to the re cord head, as well as current lo the
erase head.
BINAURAL SOUND .. . . Two-channel sound, in which each
channel record ed is heard only through one ear .
(Channel 1-left ear, and Channel 2-righ t ear.)
BINAURAL MON I TOR JACK .. .. Output jack of tape recorder
wired to accept b in aural earphon es.
BULK ERASER .. . . A strong alternating electro-magnetic de-
vice used to er ose the magnetic patterns on tape
while still wound on a reel, or in bu lk form.
CAPSTAN .... The rotating shaft which engages the tape
and pulls it across t he heads at constant speed.
C ATHODE F OL L OWER . .. . The type of electronic circuit used
in on output stage of a recorder to permit the use of
longer interconnecting cables without the l oss of high
frequency. Usually not necessary in a normal
installation.
CHANNEL . . . . Complete sound or signal path of a sound
system.
C HASSIS .. . . The metal base of frame which carries the
electrical or mechanical assemb lies.
CPS .. .. Cycles per second.
CR OSS T ALK ... . Signal (sound) leakage between two
channels .
DECIB EL ( ABBREV IATED dB) .... A relative m easure of sound
intens ity. One dB is the smallest change in sound
volume that the human ear can detect.
DIST OR TI ON . . . . Any difference between the orig i na l sound
and the recorded and r ep r oduced sound.