Technics RS-M27OX User manual

Technics
TAPE DECK
RS-M27OX
OPERATING INSTRUCTIONS
Before operating this set, please read these instructions completely

We thank you for selecting the Model RS-M270X Technics
Cassette Tape Deck for your recording and playback
enjoyment
To obtain the maximum benefit of the many features of this
deck, please read these operation instructions completely.
WARNING:
TO PREVENT FIRE OR SHOCK
HAZARD, DO NOT EXPOSE THIS
APPLIANCE TO RAIN OR MOIS-
TURE.
The serial number of this product may be found on
the back cover of the unit.
You should note the serial number of this unit in the
space provided and retain this book as a permanent
record ol your purchase to aid identification in the
event of theft.
Model no.
Serial no.
eristics
a signal
he "dbx
'1 3dB"at
lhat the
FEATURES
.Output Level Control
OPERATION NOTES CASSETTE TAPE
Horizontal Placement
For best performance, place this unit in a horizontal
position.
Location
1.
2.
.dbx Noise Reduction**System
oDolby Noise Reduction* System
oDirect Drive System
.2 Motor lC Logic Control
.Full Function Remote Control Capability
Performance may be adversely affected by extremely hot
[above 35'C (100'F )] or extremely cold [below 5'C (40'F.)]
locations, direct sunshine, or excessive vibration.
3. A "click" noise may be heard when the power switch is
turned on or of f To avoid this, be sure to set volume control
of the amplif ier to the minimum position.
4. Power Source
This unit features a DC operated molor which makes it
possible to operate on 50 Hz or 60 Hz AC power frequency
without any conversion The voltage source should be
within +5% of the unit's rated voltage Variations in excess
of +10o/. of rated voltage may cause uneven performance,
or possible damage to the unit.
5. Clean The Head Assembly
One of the most important factors in the determination of
good tape deck performance is regular cleaning of the Head
Assembly. Refer to "MAINTENANCE" on back cover and
be sure to always keep the heads surfaces clean.
ACC!DENTAL.ERASE PREVENTION
Tape cassettes have special plastic tabs, one for side one and
one for side two, which, if removed, prevent accidental erasure
of recorded material. These tabs can be pushed out with a
screwdriver or similar tool. lf they are not in the cassette, the
recording cannot be made. lf , for any reason, it is later desired
to make a recording on a cassette from which the tabs have
been removed, it is possible to do so by simply covering the
holes where the tabs were with cellophane tape, and then
record in the usual way.
'F)x
.T
For Side 1
.Peak Hold 2-Color FL Meters
.SX Record/Playback Head
."Metal Tape" Compatibility
.Record Muting
About Cassette Tape
The cassette tape used in this unit is the universal type used
throughout the world.
Product Service
Should your Technics product require service, refer to the
Directory of Authorized Servicenters, or to your lranchised
Technics dealer, for assistance Do notsend the producttothe
executive, or regional sales offices They are not equipped to
make repairs.
For Side 2
Screwdriver Tab
Cover With
Cellophane Tape
'dbx in"
without
s played
t is clear
re great
n in the
is vastly
rr to that
rloise
apes
'e be
)with
sition
J this
>cord
\ <----\
.w
Notes:
1. Do notpull thetapeoutof thecassetteopenings.
2. lf the tape is loose in the cassette, the tape may
become wound onto the Pinch Roller and result in
breakage or damage lt the tape is loose, use a pencil
as a drive shaft to rotate the reel in the proper
direction
Avoid storing cassette tape in places where the
temperature and/or the humidity is high.
lf the tape is very tightly wound/or unevenly wound,
wind and rewind it in the fast forward and rewind
modes before use
5. Use only high quality tapes up to the length of C-90.
Do not use C-120 or C-180 tapes with this unit be-
cause this tape can easily become broken or
stretched if not used with extreme care and may get
tangled with the Capstan and Pinch Roller.
6. Since dirt on the Heads, Capstan or Pinch Roller can
cause tape malfunctions, these parts must be kept
clean, as instructed in the "MAINTENANCE" on back
cover.
3
4
*'Dolby' and the double-D symbol are trademarks of Dolby Laboratories
**The term dbx is a registered trademark of dbx lnc.
-1-

CONTROLS
Tape Counter and Reset Button (tape counter)
Cassette Holder
Eject Button (eject)
Power Switch
Ipower (push on)]
Headphones Jack
(phones)
Record Button with Record lndication Lamp
lrec (O)l Bewind Button (rew) ({ {)
Stop Button [stop (I)]
Fluorescent Meter
Noise Reduction Selector Switch
INoise Reduction
(Dolby NR. out. ldb,-ltape . klEloisc)l
lnput Level Controls
(input level) (LlR)
Microphone Jacks
[mic (lef t. right)]
Timer Start Switch (timer recQ)
(Ioff.ron)
lnput Selector (input select)
(lline.rmic)
dbx Display Lamp ( l,iL,l )
Output Level Control (output level)
Tape Selector
[tape select (normal . Fe-Cr. CrOz . Metal)]
Power Cord
Remote-Control Connector
(REMOTE CONTBOL)
Button with Playback lndication Lamp
Fast Forward Button tff (> >)l
Pause Button with Pause lndication Lamp
lpause(ll)l
Record Muting Button (rec mute) (O)
Line Output Jacks (LINE OUT) (R. L)
Playback
tplay ())l
Line
CONNECTIONS lnput Jacks (LINE lN) (R. L)
I . OO =EE O EE :,
REMOTE CONTROL
L|NE OUT (R. L)
Remote-control
unit (RP-9645,
optional)
LINE IN (R. L)
J!t4
FM Stereo tuner
(left)
phones
Headphones
Location of this unit and stereo amplilier
lf this unit is placed on top of the stereo amplifier or next to it, a
"hum" noise may be heard during tape playback
Refer to the information below in order to avoid this
.lf the stereo amplifier and this unit are placed one above the
other, leave as much space as possible between them, and
place them where there is the least amount of hum
.lf the stereo amplifier and this unit are placed one beside the
other, try reversing their positions, and place them where
there is the least amount of hum.
Stereo Connection Cords
(RP-023P)
Record player
Connection Notes:
.Connections should be made in accordance with the
connection diagram and the following instructions
When 2 microphones are used in order to record in
stereophonic sound, be sure both of them have the
same specif ication standards
.Do not connect the DIN connection cord to the Remote-
Control Connector since this may result in damage
being sustained to the amplif ier or speakers
/(R)
OUTPUT
-2-

dbx Noise Reduction System
The dbx Noise Reduction System serves to greatly reduce the
noise generated during recording and playback across the
whole audible frequency spectrum (reduction by more than
about 30 dB) and also to improve the linearity at high input
levels. As a result, both recording and playback can be
performed without impairing the wide dynamic range of the
original sound There are two kinds of dbx Noise Reduction
System: type I and type II. Type I is used for open-reel decks
and industrial applications while Type II, which is featured in
this deck, is used for cassette applications.
Features
1 Reduced noise over the whole audible frequency range
(more than about 30 dB reduction).
2 The noise is compressed at a high recording level for
recording to enable recording with minimal distortion and a
wide dynamic range.
3. The linear logarithmic compression and expansion do not
make the sound quality undergo change with level mis-
matching.
Principle of basic operation
The dbx system works to expand the dynamic range by com-
pressing (encoding) the signals and then expanding (decoding
them As shown in the figure, the input signal level is halved
during recording onto the tape. During playback the halved
level is doubled to restore the original signal. The figure shows
that high signals are greatly expanded (from "+10d8" to
" +20" dB) while low signals are given a low expansion ( " -40
dB"to"-80d8" ) This results in a great improvement in the
dynamic range and simultaneously in a great reduction in tape
h iss.
lnput Encoding Decoding Output
ttt4d44fi/u^r,1l{{
Tape hiss
Expansion in Dynamic Range
The figure below shows the dynamic range characteristics
First the overall frequency response is indicated at a signal
level where the distortion is made 3% al l kHz. When the "dbx
in" position is selected,there is an increase of about"l3dB"at
the 3% point over the "out" posrtion, indicating that the
distortion with high input levels is greatly improved.
ln addition, the noise distribution is indicated at the "dbx in"
"dbx out" positions when the noise level is recorded without
any signals being supplied and that noise on the tape is played
back.
With recording and playback at the "dbx in" position, it is clear
that the noise level is greatly reduced. Because of the great
reduction in the noise level and the great expansion in the
signal level, the dynamic range at the "dbx in" position is vastly
improved, and a dynamic range which is vastly superior to that
ol a2-lrack 38 cm/sec. open-reel tape is yielded.
Notes:
oThere is no compatibility between the dbx Noise
Reduction Systems and other similar systems Tapes
recorded with the dbx system should therefore be
played back with the dbx system.
oRecord ordinary discs (not "dbx encoded discs") with
the noise reduction selector switch at any position
except "disc". The sound quality will change if this
switch is set to the "disc" position for ordinary record
play
+2AdB
0dB
\r ape saru
level alton +zadB
0dB
rt0dB
0dB
2AdB
-z 'l0dB
2AdB
40d B
30d a
40d a
40d B
60d BTape hiss 60d B
80d B80dB
Encoding/decoding process

"disc" position for "dbx encoded disc,' play
This unit comes with a "disc" position on the Noise Reduction
Selector Switch for playing "dbx encoded discs" *.
When this selector switch is set to the position given in the
figure below, "dbx encoded discs" can be played
Noi se
Dolby NR
Follow the procedure given below
(1) Set the recording output selector swilch on the stereo
amplif ier to the "phono" position and set the input selector
switch or tape monitoring switch to the "tape" position.
(2) Set this unit's input selector to the "line" position and set
the Noise Beduction Selector Switch to the "disc" position.
(3) Start operating the turntable.
(4) Adjust the unit's lnput Level Controls so that the Fluores-
cent Meter Scales def lect to near ,,0 dB".
(5) Adjust the volume using the volume control on the stereo
amplifier. Now set the mechanism to the stop mode.
Some open-reel type dbx encoded tapes are now available
f rom music stores These tapes can be played back just like the
records by setting the Noise Reduction Selector Switch to the
"disc" position
Notes:
olf the Noise Reduction Selector Switch is set to the
"disc" position during ordinary tape playback, the
playback sound will not be audible
olf the mechanism is operated during "disc" play, it will
work but the tape playback sound will not be audible.
lf the Record Button is depressed and the deck set to
the recording mode, the decoded sound (the now
restored original sound)will be recorded When playing
back this sound, set the Noise Reduction Selector
Switch to the "out" position
.lf the Record Button is depressed when you are
listening to records with the Noise Reduction Selector
switch at the "disc" position, the sound will be cut off
for an instant This is not a malfunction
aTo record "dbx encoded records" using the dbx Noise
Reduction System, first set the Noise Reduction
Selector Switch to the "out" position and start
recording This makes it possible to record in the
encoded state. For playback, set the selector switch to
the "tape" position. The recording level should be set
as follows
First set the Noise Beduction Selector Switch to the
"disc" position and adjust the lnput Level Controls to
around "-3dB" so that the Fluorescent Meter Scales
meter pointers do not exceed "0dB', at peak times.
Now set the Noise Reduction Selector Switch to the
"out" position again and proceed with the recording.
Sounds monitored while recording "dbx encoded
records" are encoded (compressed) sounds, not
decoded sound
* ''dbx encoded discs (records)" dif f er f rom ordinary records in
that dbx noise reduction encoding (compression) is per-
formed when the signals are cut into the records During play,
these signals pass through a decoder and the original sound
is restored. This makes for a virtually noise-free sound, a
wide dynamic range and better music reproduction
"Metal tape" magnetic ,,Metal tape,, f requency response
characteristics example oda: r6onwh/m
"Meta!tape"
Advantages and magnetic characteristics of ,,Metal
tape"
1 . Maximum output level (MOL) is greater at all frequencies.
2. Excellent frequency response characteristics at high input
level.
3 Wide dynamic range at high frequencies.
4. Excellent signal-to-noise ratio at high frequencies.
5 Low distortion
Technological developments to accommodate
"Metal tape"
"Metal tape" is a totally new kind of high performance tape,
and conventional cassette tape decks cannot sufficienily bring
out its performance potential.
Our company has succeeded in developing the foilowing
technology to exploit the advantages of "Metal tape', to its
fullest extent.
1. Development of the SX head featuring minimal
distortion with high input signal levels.
The SX head employs permalloy and it features a high
saturation magnetic f lux density and also a superlative wear
resistance. lt was developed especially for the new breed of
"Metal tape".
2. Development of high-ef f iciency sendust erase head.
Sendust is a material with a high saturation magnetic flux
density and it is capable of extremely eff icient erasing even
with "Metal tape" with a high maximum output level
3. The power in the bias oscillator circuit has been
increased.
A word about "Metal tape"
Conventional cassette tapes can be broadly classified into 2
categories according to the magnetic material coated on the
tape surface: the ferric-oxide ( 7 -FezOs) type, including
ordinary LH tape, etc.; and the chrome-dioxide (CrOz) type,
including XA tape, etc.
Continued technological advances have been made in an
attempt to develop these tapes to a high level of performance,
but recently there has been a recognized need for the
development of a new material to improve performance much
further
ln response to this need, ',Metal tape,'has been developed as
a new kind of tape, employing a magnetic alloy of pure iron (Fe)
as the main component in the magnetic substance. ln
comparison with conventional cassette tape, ,,Metal tape,,can
record a far greater amount of information at a high density. As
a result, the maximum output level (MOL) has been improved
throughout the entire range, and, in particular, the frequency
response characteristics at high levels and the dynamic range
in the high range have been greatly improved. This means,
therefore, that a remarkable improvement of sound quality has
been made possible (lt should be noted that the tape base and
parts of the tape other than the magnetic substance are com_
posed of the same material as previously used.)
-4-

r- CASSETTE INSERT!ON AND REMOVA
oFollow the numbered order
@
!iltt u
Notes:
.Be sure the open part of the cassette f aces downward. lf it is
upside down, the Cassette Holder can't be closed.
oBe sure to close the Cassette Holder gently.
oBe careful not to press the Eject Button while the tape is
moving, because this will stop the operation and the Cassette
Holder will open
TAPE SELECTOB
Before beginning a recording, check to be sure that the Tape
Selector is set to the type of tape that is going to be used.
Note that there may be a difference in sensitivity of 2 or 3 dB
depending on the type of tape
To open
the
cassette
tid.
((})
lt[!t0 ! o oEl
PLAYBACK .Follow the numbered order.
Epower push on
F
The lndicator lights when the
power is switched on. But it has
nothing to do with the Noise
Reduction Selector Switch
E-
oqo iln n o
m[0!c ! o o
Refer to "CASSETTE
INSERTION AND
REMOVAL" above.
Tape Selector
Settino B rand Tape Type
normal
AMPEX GFAND MASTEBI
BASF PBOFESSIONAL I
FUJI FXI
MAXELL UD
MAXELL UDXLI
SCOTCH MASTER I
SONY UHF
TDK AD
c-60, c-90
c-60, c-90
c-60, c-90
c-60, c-90
c-60, c-90
c-60, c-90
c-60, c-90
c-60 c-90
CrO,
AMPEX GHAND MASTERII
BASF PBOFESSIONAL II
FUJI FX II
MAXELL UDXL II
SCOTCH MASTEF tr
TDK SA
c-60
c-60
c-60
c-60
c-60
c-46, C-60
Metal
FUJI SB
MAXELL MX
SCOTCH IVIETAFINE
SONY METALLIC
TDK MA
c-46, C-60, C-90
c-46, C-60, C-90
c-46, c-60, c-90
c-46, c-60. c-90
c-46, C-60. C-90
C
[[![!L]
tape select
Fe-Cr CrOz
normal Metal
Refer to "TAPE"
SELECTOR" above
Set the Noise Reduction Switch to "Dolby NR" when
using the Dolby system and to "dbx tape" when using
the dbx system Refer to page 3 and 4 for instructions on
use at the "dbx disc" position
n
play [[[!!! r- o
For private listening
4=="-o
lrllll I o d.gs !
For listen-
ing with
speakers
':" ':l 'rf, "!, * ,"ri"
!!. !r!
stop
Notes:
.Note that the operation buttons will not fuction until about 5
seconds have passed after the power rs turned on
.Output is 0.42 V f rom the Line Output Jacks when the Output
Level Control on this unit is set to its maximum position and
the Fluorescent Meter scales indicate 0 dB
.No playback sound will be heard from this unit if, during
playback, the Output Level Control is set to its minimum
position, even though the volume control of the amplifier to
which this unit is connected is set to its maximum position
oWhen listening through headphones, adlust the volume level
by using the Output Level Control of this unit
.Do not set the Timer Start Switch to "on" during playback
E

FORWARD AND REWI .Follow the numbered order
ND
a
FAST
E
'3"
I'ii, "!' Jl -i'"
illr!
stop
'3'
l
;' ':r 'ri, "i :!
r[!!r
;' ':: 'ri,
!ril
stop
order.
RECORDING
E tff: a
Refer to "PLAY-
BACK" @on page
5 for the selection
of Noise Reduction
System.
Refer to "CASSETTE
INSERTION AND RE-
MOVAL "Il,El,Et on
page 5.
Caution:
Do not push the Eject Button during the fast forward or the rewind operation
pushing the Stop Button. Before pushing the Eject Button, be sure to first stop the tape by
oFollow the numbered
n-lllnlloosnlB
tape select
Fe-Cr Refer to "TAPE
normar uru2 SELECToR"
,nlnt I d oanl B
input select
II
line mic
lf the recording is to be made by
microphone(s), set the lnput
Selector to the "mic" position. lf
the recording is to be made from
equipment connected to the Line
lnput Jacks, set the lnput Selector
to the "line" position.
lnput Level Controls are each separated into
two parts so that left and right channels can
be adjusted separately. The outer part of the
controls is for the left channel, and the inner
part is for the right channel.
Irrrrrrrurrrrrrnrrrurrrrrrrrrrr f)[ rrrrrrrrrrururrrrrrrrrr)l
$!r8r!*!t,tt8t!8,8t,!8!8&,t&t!ffi !!!l!l!u!'l|lt!*{*}}1
20 fpr-FAFl 6 . 4 . 2 . O . 2OO. 6 I .
,t!!!|lt8n,!r!!!8Bett!&er!!!,et8*&8te*tn!$|llltstrilll
n lrrrrrrrrrrrrrrrrrrrrrrrrrrrrnrrrrO( rrrrrrrrrrrrrrrrrrrrrrrrN
oMake the adjustment so that the Fluores-
cent Meter scales show an illuminated
indication up to "+6 dB" when the input
signal level is maximum
.For recording of chamber music (such as a
string quartet), and other music in which
there is very little percussion sound, adjust
so that the level is slightly lower (to an
iltuminated indication up to "+3 dB")
Ittttrrrrrrrrrrrrrrr IO rrurrrrurrr)l
8'!r*86!!8888s'08&tXrX&88'trX&8ee&ltii*i*{}t:}tt{i$t "i
20 tm-n 6 . 4 . 2 . o . 200, 6 8 .
o lrrrurrrrrlrrrrrrf1|Onrrrrrrrrrrrr)l
.lf the Fluorescent Meter scales show an
illuminated indication of only up to about "0
dB" when a loud sound is received, the
recorded results will be rather noisy (with a
poor signal-to-noise ratio)
when recording "dbx encoded records", the Fluorescent Meter Scales should be
adjusted, so as they do not exceed the "0 dB" level at peak times. Refer to the notes on
page 4 about Recording of "dbx of encoded records,,
!8Xt,,r,88t8&rtrX8t8ttN&tr&t$&t8!!ffi &t!!t!t'ttxx||&x !rl
20 fP{Ml 6 . 4 . Z . O , 200. 6 I .
!8t$rE8{t8t,!tr8!&r*t,8rr!888&xtst,!!r!8xE!lNxl|t8t8t!
n lrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrllf)rrrrrrrrrrurrrrrrrrrrrrrrrrrr{l
olf, conversely, the Fluorescent Meter
scales continuously show the illuminated
indication up to "+B dB," the recorded
results will be rather distorted
gEE
r- -l- I0
s|oe
t
lnllll I o oE![ B
Notes:
.Be sure to use a cassette which has the two plastic tabs
intact. lf these tabs have been removed, a recording cannot
be made (Refer to " ACCIDENTAL-ERASE pREVENT|ON,'
on page 1 ,)
oFor recording, the Record Button must be pressed first, then
the Play Button.
.Do not set the Timer Start Switch to "on" during recording
.Some audio material is copyrighted, and recordings of such
material must be limited to personal use and enjoyment,
-6-
stop

TIMER RECORDING AND PLAYBACK .Follow the numbered order
aConnections to the power source
Stereo tuner
AC OUTLET
Timer AC socket
illltil o orlt B
Stereo Amplifier
Recording with a Timer (Timer of FM broadcasts)
recording
la
Refer to
..CASSETTE
INSERTION
AND RE-
MOVAL.''
E, E, Et ON
page 5
Tab Cellophane
L---'"P", -
w@
Refer to
..ACCIDENTAL-
ERASE PREVEN-
TION," on
page 1.
o oE![ 30,_llO I o o.tl B
Adjust input level Refer to
..RECORDING"
Eon page 6.
Set the timer to the desired time
(Depending upon the type of
timer, the power to the amplif ier,
tape deck and tuner will then be
turned of f .) Refer to the
operation instructions of the
timer for further information.
This completes the preparations for timer
recording. At the desired time, the power will
be turned on and the timer recording will begin
Playback with a Timer
833n"!"
il Refer to
..CASSETTE
INSERTION
AND RE-
MOVAL.''
II, E, E ON
page 5.
b-e
Refer to
.,ACCIDENTAL-
ERASE PREVEN-
TtoN," on
page 1. lluu,ro6plnB
Rewind the tape
to the position
from which the
timer playback is
to begin.
Set the timer to the desired time.
(Depending upon the type of timer,
the power to the amplifier, tape
deck and tuner will then be turned
off .) Refer to the operation
instructions of the timer for further
information
;"
!':: 'i.'o ,':, r!n
ptay
Jt ',','"
t!
bass treble volume
oo@
Stereo Amplifier
t mer rec
It
off on
I
llfinl I o osnilB
This completes the preparations for limer playback. At the desired time, the
power will be turned on and the timer playback will begin.
Note:
lf the accidental erase-prevention tabs of the cassette are intact, a
timer recording will then be made. lf they are not intact, timer playback
will begin automatically.
-7 -

ING .Follow the numbered order.
@
Refer to "CASSETTE
INSERTION AND RE-
MOVAL." II, EI, Et ON
page 5.
Use the "CrOz"
position for erasing
normal, Fe-Cr and
CrOz tapes.
Use the "Metal"
position to erase
"Metal tape".
,t pdLse
o{Frl
[[!nrr
rec
power
push on
E
E
+
olo dc
It!![! ! ooEr[! 3
tape select
Fe-Cr CrOz
norma6;,rr'retar
@O
oE0! 3
.!' ':{ 'ri, ,i ,tt .i"
!ril!!!
stop
ool'
trd
a
[!
I
play
o"'o'**@l'"Jl'
m!!D! !
Pause
The Pause Button can be used to temporarily stop tape
movement during recoridng or playback To start the tape
moving once again, press the Play Button.
Automatic-Stop System (FullAuto Stop System)
This unit has a Full Automatic-Stop system. When the tape
comes to its end during recording, playback, fast forward or
rewind, the tape-transport mechanism automatically releases
and places the unit into the stop mode.
Because the mechanism automatically stops when the tape
comes to its end, both the operating parts and the tape itself are
protected. This unit is free from problems such as Pinch Roller
deformation resulting f rom leaving the unit in the stop condition
(without pushing the Stop Button) for a long period of time
Monitoring
To listen to the recording as it is being made, simply plug a set
of stereo headphones (8f)- 1 25O) into the Headphones Jack.
You may also listen to the program as it is being recorded if your
receiver or amplif ier is equipped with a Tape-Monitor Switch
Note:
ln the same way as for playback, an amplifier can also be
used for monitoring.
Record muting
The record-muting feature is convenient to prevent recording
such unwanted material as commercial messages when
recording FM radio broadcasts, or the "click" noise heard
when the stylus descends to the disc surface
How to use the Record Muting Button
lmmediately after one program has been recorded, keep the
Record-Muting Button depressed for about 5 seconds. After
these 5 seconds have elapsed, depress the Pause Button in
order to save tape space until desired recording material is
available again.
Remote control
The unit incorporatesan lC-based electronic control operation
system and so it can be operated remotely using the remote
control unit (RP-9645) or the wireless remote control unit (SH-
R808)
Noise Reduction System
This unit is equipped with two types of Noise Reduction
Systems for suppressing tape hiss Make the most of each
system during use.
'1 . Refer to page 3 and 4 for details under the tiile "dbx Noise
Reduction System."
2. The Dolby noise reduction system works by recoridng
sound at a low level with an increased higher frequency
level and by playing back the sound at a lower level
equivalent to the increase in the level during recording. ln
other words, the tape hiss is reduced by an amount
equivalent to the reduction in the level during playback
When recording or playing back tapes with the Dolby
system, set the Noise Reduction Selector switch to the
"Dolby NR" position. When recording or playing back tapes
without the system, set the switch to the "out" position.
Fluorescent Meter
The unit's Fluorescent Meter Scales emproys fluorescent dis-
play tubes to indicate the input and output signal levels in the
form of a bar graph
During playback the playback level is indicated, and during
recording the recording level is indicated
This unit's Scales are designed for "peak" indication With
peak indication, the Scales respond sensitively to rapid bursts
of sound such as that from percussion instruments and so it is
possible to record up to near the tape's saturation level with
very little distortion and a good signal-to-noise ratio
Furthermore, the unit is provided with an auto reset peak hold
function. ln order to facilitate recording level readout, the peak
level--apart from the illumination of the Scales--can be
held on the meter for about 2 seconds During this time the peak
level can easily be read out
Based on a reference of "0 dB", the unit's Scales have
markings in two colors for easy instantaneous readout.
lf the unit is brought into a warm room af ter it has been in
a very cold location (freezing temperature), it may not
operate properly when first connected This is due to
condensation on internal parts of the unit This ef fect will
disappear, if it is allowed to stand at room temperature
for 30 minutes or so before being used
-8-

MAINTENANCE .Follow the numbered order
Cleaning the head section
Because the Head Assembly, Pinch Roller and the Capstan are in constant contact with the moving tape,
parts will decrease the sound quality They should be cleaned with a Cotton Swab af ter every 10 hours of
Removethe cassette lid REC/PB Head
Capstan
Pinch Roller
Tape
Guide
dirt or residue from the tape on these
use. as described below:
g
![!![0
1
2.
Replace the
cassette lid
IN CASE OF DI
lf operation of this unit does not seem to be normal, check the
following points before requesting service lf the trouble cannot
be determined and corrected, contact the dealer from whom it
was purchased, or an authorized Servicenter
After the tape cassette is inserted, the tape does not
move when the Play Button is depressed.
als the Power Cord correctly connected?
. ls the Power Switch set to the ''on " position?
Although the tape moves, no sound is heard.
ols the tape blank?
.Are the connections of amplilier and speakers correct?
.Are connection cords from this unit to the amplifier
correctly connected?
.ls the volume control of the connected amplifier set to the
correct position?
ols the monitor switch of the connected amplifier set to the
correct position?
.Has the noise reduction selector switch been set to the
"dbx disc" position?
3. Sound is distorted.
.ls the recording level too high?
.ls the input impedance of the connected amplif ier
appropriate?
4. The Record lndication Lamp does not illuminate when
the Record Button is depressed.
.ls the tape cassette inserted correctly?
.Have the recording-prevention tabs of the cassette been
removed?
5. Tape moves, but no sound can be recorded.
.ls the lnput Seletor set to the incorrect position?
6. Playback sound is hoarse or vibrates. Recorded sound
is not clear.
oAre the head surfaces dirty?
.ls foreign material adhered to the Pinch Roller and/or the
Capstan?
o ls the cassette tape too tightly wound?
oHas the Tape Selector Switch been set to the correct
position to match the tape being playback?
o ls the Noise Reduction Switch set correctly to playback the
recorded encoded material?
Accessories
StereoConnectionCord..... 2
*Noise reduction system manufactured under license from
Dolby Laboratories
SPECIFICATIONS
Track system: 4-track 2-channel stereo recording and
playback
Tape Speed: 4.8 cm/s (1* ips)
Wow and
Flutter: 0 035% (WRMS)
Frequency
Response: Metal tape; 20-20,000H2
30-17,000 Hz +3 dB
CrOz tape; 20-19,000 Hz
30-16,000 Hz +3 dB
Normal tape; 20- l7,000 Hz
30- 1 5,000 Hz +3 dB
Dynamic Range: 1 10 dB (at 1 kHz)
Max. lnput Level: I0 dB or more improved with dbx in
(at 1 kHz)
Signal-to-Noise
Ratio: dbx in; 92 dB (peak level A weighted)
Dolby NR in; 68 dB (above 5 kHz)
Dolby NR out; 58 dB
(signal level:peak level A weighted,
CrOz type tape)
Fast Forward and
'Rewind Time: Approx. 85 seconds with C-60
lnputs: cassette tape
MIC; sensitivity 0 25 mV, input impedance
100k()
applicable microphone impedance
4000-10 ko
LINE; sensitivity 60 mV, input impedance
47 k0
LINE; output level 420 mV,
output impedance 2.5 kO or less,
load impedance 22 kA ov et
HEADPHONES; output level 125 mV,
load impedance 8O
Outputs:
Bias Frequency: 85 kHz
Motor: 2-motor system
Heads:
1 -FG servo controlled direct-drive
DC motor
'1 -DC motor for reel-table drive
2-head system
1 -SX (Sendust Extra) head
for reclplayback
1 -sendust/ferrite double-gap
head for erasure
AC 1 20 V. 50-60 Hz
Consumption: 40 W
Dimensions 43cmx9 7cmx35 0cm
(WxHxD): (16f"x3f"x1sf")
Weight: /kg (15 lbs 7 oz)
Specif ications are subject to change without notice
Power
Bequirement:
Power
Notes:
olf the Heads, Capstan or Pinch Roller are very dirty,
apply a small amount of tape head cleaner to the
Cotton Swab.
.Don't allow magnetic materials, such as a Screw-
driver or a magnet, near the Head Assembly
oWhen cleaning, be careful not to bend the Tape
Guides
.Don't attempt to clean the cabinet with alcohol,
benzine or thinner, because it may damage the
f in ish.
lf the cabinet is dirty, clean it with a soft cloth
dampened with a soap-and-water solulion.
oHandle the window (removed to facilitate cleaning
of the Heads) with care, because it might break if
dropped.
oWhen "Metal Tape" is used, the Head Assembly
should be cleaned af ter each 10 times of use
Panasonic Company
Division of Matsushita Electric
Corporation of America
One Panasonic Way, Secaucus,
New Jersey 07094
Panasonic of Hawaii, !nc.
320 Waiakamilo Road, Honolulu,
Hawaii 968.17 Printed in Japan
ooT3013 FO281K1041

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