Crescent 900 Series User Manual

PnoToFACT*
FolJ"t
PLAY
-
RICORD
CONTROL
KNOB
CRESCENT
MODET
9OO
Series
RECORD
LEVER
INDICATOR
FAST
FORWARD
coNTROt_
o
o
ar
L
o
Fra
Go
eo
no.
&t
L,
tr.
o
o
E
RADIO
-PHONO
TV
INPUT JACK
VOLUME
CONTROL
=o
E,
mfi
Fn
ofi
Oo
o2
gl
-{
o
I
I'
g
TONE
CONTROL
AC
L;NE
C6RD
OFF
-
ON SwlTcH
REC-FTASLE
Figure
I
GENERAL
INFORMATION
The Cresent
900 S91i9s.T1pe
Recorder
is designed
to record
and
play
back
two
tracks
of
material
on standard
width
(V4'\
recording
tape,
which doubles
the
playinf
time
of a standard
5"
or 7" reel
of tape
with no loss
of frequency
iesponse
or
quality.'
R-ecdrdings
can be made
from a.radio,
television receiver
or
phonograph,
in additionto
tliose
made
diiectty
from
the
microphone.
Recordings
can
be
piayed
back
through the
self-contained
speaker
or in
external
speaker
through use
of the
Output Jack.
The
Cresent
Models
903
and
907 are
fundamentally
identical
in
construction,
the
major
diff_ere,nce
being
that Model
903 has
a
tape_spe-ed
of.3
3/4'\
per
second
while
Model
gb?
operaies
at 7
l/2"
per
second.
Using
both channels
of
the
tap6,
tie recording
time
for
both models
is
as f oliows:
Size ReeI
5rt
7"
t
hour
2
hours
Model
903
Model
g0?
Speed
-3
3/4"
per
sec.
Speed
-7
1/2,,
per
sec.
l/2
hour
t hour
Models
903
and
907 are
designed
to operate
on 60 cycle,
110-120
volts,
AC
suppty.
CAUTION:
Severe Damage
WiIl Result
If
Connection
Is Made
To
A
Direct
Current
(DC)
Line"
Manufactured
by:
Crescent
trndustries.
Inc.
5900
W.
Touhv
Av6nue
Chicago
31,
illinois
fhis molerial
compiled
ond
published
by
sAtvls
&
co.,
tNc., INDIANAPOLIS,
INDIANA
Copyright 1954
.
All Rights Reserved
DATE
5-54
sET
239
TOLDTR
3
HOWARD
lA/.

Crescent 900 Series Specifications

General

Brand	Crescent
Model	900 Series
Category	Measuring Instruments
Language	English

Summary

Operating Instructions

Threading the Tape

Step-by-step guide for loading the tape onto the reels.

Recording from Microphone

Instructions for capturing audio using the microphone input.

Recording from External Sources

Recording from Radio

Methods for recording audio signals from a radio receiver.

Recording from Phonograph

Methods for recording audio signals from a phonograph player.

Recording from Television Receiver

Method for recording audio signals from a TV.

Playback and Tape Handling

Playing a Recording

Unit Adjustments

Spindle End Play Adjustment

Take Up Spring Adjustment

Reel Seat Drag Adjustment

Operational Adjustments

Lifter Arm Adjustment

Adjusting the lifter arm for play-record switch operation.

Play-Record-Erase Head Adjustment

Critical adjustment for head alignment, output, and frequency.

Pressure Pad Adjustment

Lubrication and Troubleshooting

Lubrication Guide

Troubleshooting: Tape Take-Up Issues

Solutions for problems where tape is not taken up properly.

Troubleshooting Common Issues

Fast Forward and Rewind Problems

Speed Variation or Wow Issues