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Classes of magnetic sound operation
The uni
ve
rsal amplifi
e
r permit
s any o
f th
e fo
llow
ing
cla
sses o
f
reco
rding
:
r;:~r&
~
/ /
( / /
~
Erasure
~
Recordm
~&'2~
,
Prerious
~
~ef~'?~ng
The diagram appli es to all magnetic tra
cks.
Magnetic recording
General magnetic recording in one
operation 1erase head enabled)
.
Erasure of section of an existing
record1ng (erase head enabled).
New section added to existing
recordi ng; ol
d
recordi ng is co
mp
letely
erased (erase head enabled).
Rerecording or mixing of existing
recording; old recording remains in
background.
(Tr ick
circ u1 t; erase
head
disab le
d
)
All t ransitions from o
r
to erasure
,
mixi ng and rerecor dmg are infinite ly
adjustab
l
e.
1. Se
t fun
c
tion swit ch
h
(Fig. 2
a)
of amplifier on red
0
.
Press button d (Fig. 3 a)
.
2.
Turn tone control cd (Fig
.
2
a) to midposi
tion (inde
x
points to
5-6).
3.
Turn
reco
rd
co
ntro
l
f (Fig. 3
b)
clockwise
as
far
as
it will go (
Gl
and
switch on erase head (switch e Fig.
3
b
C
).
4. Ad
j
ust volume control for pickup e or microphone f (Fig.
L:
a) according to
lou
dest passag
e
of
pe
rforman ce so that bright segments of magi c-fan
indi-
cator c (Fig. 3 a) com
e
together with a
c
learan ce of
approx.
1 mm
.
Rec
ording
s
of phonograph records or live re cording
s
using the
mic
rophone
may be made individually or mixed. For live recordings, switch off loud-
speaker to prevent feedback. The recording can
be
monitored with the aid
o
f a
se
t of high-impedance headphones that may be connected to the
output terminal of he loudspeaker.
5.
On completion of thes
e preparations,
thread
fil m.
6. Switch on
projec tor.
To begin recording, pres
s
button d of recording
stage.
The renewed illumination of th
e
magic-fan indi cator
denotes
that recording
may begin
15
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