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Fig.
4
Film
path with sound
head unit
Fig.
5
Film path for projecting silent film in a sound
projector
Sound reproduction
Switch on the amplifier by depressing but-
ton 71. When showing
film
with optical
sound track, depress button 70 and, when
showing film with magnetic sound track,
button 69 in addition.
The
pilot lamp for
checking the
running
of
the
film, and the
illumination of the stroboscopic disc are
operated by switch 48.
Put
the projector into
operation as describ-
ed
in the
main
instruction
manual
for
the
2000 projector.
During projection, make sure
that the rollers 37 and 42 of the sound head
unit rotate
.
This can easily be verified by watching the
dots displayed on
these
rollers.
Adjust
the
sound volume by
turning
knob
68.
The
knob 72 permits tone control accord-
ing to taste and in keeping with acoustic
co
nditions.
When
reproducing
from records or micro-
phone,
leave the buttons
69 and 70 in
their
normal position.
Knob
67 is the volume con-
trol for microphone and records.
Microphone announcements may be
super-
imposed on optical or magnetic sound re-
production.
5
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