null  null
Unidirectional Auto Reverse
Cassette Deck
Owner's Manual
You have chosen a unique and outstanding cassette deck. The Nakamichi RX-SOS
permits auto-reverse recording and playback, based on a totally new concept. The
unidirectional auto-reverse mechanism provides an ingenious and complete solution to
the inherent drawbacks of conventional auto-reverse svstems.
Nakamichi's original discrete three-head configuration and diffused-resonance
double-capstan transport ensure perfect reproduction quality.
Please take the time to read this manual in its entirety to fully acquaint yourself with all
features of your cassette deck.
Thank you.
The lightning flash with arrowhead
symbol, within an equilateral triangle, is
intended to alert the user of the presence
of uninsulated "dangerous voltage"
within the product's enclosure; that may
be of sufficient magnitude to constitute a
risk of electric shock to oersons.
Nakamich i Corporation.
The exclamation point within an
equilateral triangle is intended to alert
the user of the presence of imponant
operating and maintenance (servicing)
instructions, in the literature
accompanying the appliance.
This equipment generates and uses radio
frequency energy and if not installed and used
properly, that is, in strict accordance with the
manufacturer's instructions, may cause
interference to radio and television receotion. lt
has been type tested and found to comply with
the limits for a Class B computing device in
accordance with the specifications in Subpart
J of Part 15 of FCC Rules, which are designed
to provide reasonable protection against such
interference in a residential installation.
However, there is no guarantee that
interference will not occur in a particular
installation. lf this equipment does cause
interference to radio or television receotion.
which can be determined by turning the
equipment o{f and on, the user is encouraged
to try to correct the interference by one or
more of the following measures:
- reorient the receiving antenna
- relocate this equipment with respect to the
move this equipment away from the receiver
plug this equipment into a different ouilet
so that equipment and receiver are on
diflerent branch circuits.
lf necessary, the user should consult the
dealer or an experienced radio/television
technician for additional suggestions. The user
may find the following booklet prepared by the
Federal Communications Commission heloful:
"How to ldentify and Resolve Radio-TV
nterference Problems".
This booklet is available from the U.S.
Government Printing Office, Washington, DC
20402, Stock No. O04-OOO-O0345-4.
Please record the Model Number and Serial
Number in the space provided below and
retain these numbers.
Model Number and Serial Number are located
on the rear oanel of the unil
Model Number RX-505
Serial Number
Safety Instructions.
On Cassette TaDes
Cassette lnsertion and Removal
Controls and Features
Precautions Before Operation
The Auto-Reverse System
Special Features.
Tape Selector and Equalizer Switch Setting
Chart. ..
Specif ications.
Removal of Transport Fastening Jig
Before connecting the cassette deck, remove
the transport fastening jig on the bottom panel.
Be sure to retain the fastening jig and screw,
as these will be needed again for renewed
transport or shipping of the cassette deck.
Safety Instructions
Thefollowingsafetyinstructionshavebeen 8. Ventilation-Theapplianceshouldbe l3.Cleaning-Theapplranceshouldbecleaned
included in compliance with safety standard
regulations. Please read them carefully.
1. Readlnstructions-All
situated so that its locatron or position does
not interfere with its proper ventilation. For
only as recommended by the manufacturer.
l4.Nonuse Periods-The power cord of the
example,theapplianceshouldnotbe applianceshouldbeunpluggediromthe
situated on a bed, sofa, rug or similar
outlet when left unused lor a long period of
operating instructions should be read
before the appliance is operated.
Retain instructions-The safety and
operating instructions should be retained
for future reference.
Heed Warnings-All warnings on the
surface that may block the ventilation
openings; or placed in a built-in installation, 1S.Object and Liquid Entry-Care should be
such as a bookcase or cabinet that may
taken so that objects do not fall and liquids
impede the llow of air through the
are not spilled into the enclosure through
ventilation openings.
applianceandintheoperatinginstructions g. Heat-Theapplianceshouldbesituated l6.DamageRequiringService-Theappliance
(including ampliliers) which produce heat.
should 1O.Power Sources-The appliance should be
connected to a power supply only of the
type described in the operating instructions
or as marked on the appliance.
1 .Grounding or Polarization-Precautions
should be taken so that the grounding or
6. Carts and Stands-The appliance should be
polarization means of an appliance is not
used only with a cart or stand that is
recommended by the manufacturer.
should be
Follow Instructions-All operating and
instructions should be
Water and Moisture-The appliance
not be used near water-for example,
a bathtub, washbowl, kitchen sink,
tub, in a wet basement, or near a
away from heat sources such as
heat registers, stoves, or other
should be serviced by qualified service
personnel when:
A. The power-supply cord or the plug has
been damaged; or,
B. Objects have fallen, or liquid has been
spilled into the appliance; or,
C. The appliance has been exposed to
rain; or,
D. The appliance does not appear to
operate normally or exhibits a marked
change in performance; or,
orCeilingMounting-Theappliance 12.Power-CordProtection-Power-supply E. Theappliancehasbeendropped,orthe
should be mounted to a wall or ceiling only
as recommended by the manufacturer.
cords should be routed so that they are not
likely to be walked on or pinched by items
placed upon or against them, paying
particular attention to cords at plugs,
convenience receptacles, and the point
where they exit from the appliance.
enclosure damaged.
l T.Servicing-The user should not attempt to
service the appliance beyond that
described in the operating instruction. All
other servicing should be referred to
qualified service personnel.
On Cassette Tapes
1. C-120 cassettes (playing time one hour
over a side for which the tab has been
removed, cover the tab opening with a piece
o{ adhesive tape
per side) contain extremely thin tape
which breaks or snarls easily, is
sometimes subject to stretching and also
is of low sensitivity. Therefore, C-120
cassettes are not recommended for
high-{idelity recording.
Do not pull out the tape trom the cassette
Be careful not to turn the cassette reels
with the fingers, causing tape slackening.
Store cassette tapes away from heat, high
humidity, dust, and magnetic fields such
as caused by speakers, TV sets etc.
the resoective mode will be entered
without the need to press the Eject/Load
Break off this tab to
protect Side A from
accidental erasure.
To listen only to side B, press the
Reverse button. The cassette will be set
in reverse, with side B facing outward.
Align side A of cassette
with @ of holder. /
Break ofl this tab to protect
Side B from accidental
and Removal
(1) Insertion of a Cassette
Cassette Tabs
You can protect valuable recordings from
accidental erasure and re-recording by
completely removing the appropriate tab on
the top edge of the cassette. The tab for
each side is located on the too left-hand
corner as you face the side. Use a small
screwdriver. and oush the tab down to break
it off. Do not leave the broken tab in the
recess. lJ you wish at a later date to record
By pressing the Eject/Load button, the
cassette compartment slides out.
Place the cassette in the cassette
holder with side A facing outward and
the exposed tape facing up.
By pressing the Eject/Load button
again, the cassette compartment is
drawn in and the cassette is set in place.
Also, if the Play, FastForward or Rewind
button is pressed in the eject condition,
the cassette will be set at side A and
(2) Removal of a Cassette
By pressing the Eject/Load button in
any operation mode, not only stop but
also recording, playback, fast-forward,
etc., the tape motion stops and the
cassette comoartment slides out. At this
time, side A always faces outward (eject
Remove the cassette.
Controls and Features
Counter Reset Button
Dolby NR Indicators
Jack O
Cassette Compartment
(1) Tape Counter
Starting from "0000", tape travel is indicated in
the range from "9999" to "*999". Counter
indication is reset to "0000" by pressing the
Reset button, and also when the power is
switched on, the tape is reversed, and the Auto
Rec Standby operation is comoleted.
(9) Auto Rec Pause Switch
When this switch is set to ,,On', in the record
mode and the tape runs for more than 45
seconds without input signal (blank recording),
the tape is automatically rewound for the
equivalent of 30 seconds and then the deck
goes into the record/pause (record-standby)
(2) Rewind Button
Used to rewind the tape rapidly. During
operation, the indicator lights up.
(3) Gueing Button
Used for tape cueing to easily find a desired
spot on the tape. During operation, the
indicator above the button lights up.
Used to completely stop the tape transport
from any mode. During operation, the indicator
above the button lights up.
(5) Play Button
Used to start playback or to start recording
1) Rec Mute Button
By pressing this button during recording, the
recording signal is cut off for as long as the
button is kept depressed. During the operation,
the indicator lights up. The indicator also is lit
in the record-standby mode and the ,,Down"
mode of the Master Fader, and it lights up
momentarily when the Record button and play
from the record-standby mode. During
operation, the indicator lights up.
button are pressed to start recording trom the
stop mode.
(6) Fast-Forward Bltton
(12) Program Seek Button
When this button is pressed, the tape is
Used to fast-forward the tape. During
operation, the indicator lights up.
(7) Reverse Mode Switch
Serves to select the auto-reverse mode for
recording and playback.
(15) Record Button
Used for recording. During operation, the
indicator lights up.
(1O) Skip Switch
When this switch is set to "On" and a blank
(unrecorded section) of more than 40 seconds
is encountered during playback, the deck
automatically goes into the fast-forward mode.
(4) Stop Button
(14) Master Fader Buttons
These buttons serve to perform fade-in and
fade-out during recording. (*p. 10)
fast-forwarded and playback automatically
starts at the beginning of the next selection.
By pressing the bLitton in the rewind mode, the
beginning of the present selection is located
and playback starts from there. (*p. 9)
(8) Timer Switch
(13) Pause Button
This switch is used for timer-activated
recording or playback. In ordinary operation, it
must be set to "Off". (.-p. 7)
Used to temporarily interrupt tape travel during
recording or playback. During operation, the
indicator lights up. To start the tape again,
press they Play button.
(16) Memory Switch
When this switch is set to "Play" or "Stop", the
respective function is performed automatically
when the tape reaches the counter indication
"0000" during rewind or fast-forward.
(17) Auto Fade Switch
When this switch is set to "On" in auto-reverse
recording, automatic fade-out is performed at
the end of side A and automatic fade-in at the
start ot side B. (--p. 8)
(18) Reel Hub Switch
When the Auto Fade function is used, this
switch must be set to the oosition
corresponding to the reel hub size of the
cassette in use. (-*p. 9)
(19) Peak Level Meters
Provide exact indication of peak levels in the
range of -40 dB to +10 dB.
(2O) Output Level Control
Serves adjust the line output level and the
headphones listening level.
(21) Bias Tune control
Serves for fine adjustment of the bias current.
(22) Dolby NR Switches
To use the Dolby NR system, set the
upper-switch to "On" and select either the
B-Type or the C-Type system with the lower
switch. The respective indicator lights up.
(25) MPX Filter Switch
(28) Reverse Button
Used to suppress the 19-kHz multiplex carrier
signal, which could interfere with proper Dolby
NR operation when recordig from FM stereo
broadcasts. At other times, the switch should
be set to "Off".
Serves to reverse the cassette.
(23) Equalizer Switch
Serves to select correct equalization in
(26) Monitor Switch
recording and playback for the tape in use.
For playback of a tape and for off{he-tape
monitoring during recording, this switch must
be set to "Tape". For record level setting etc.,
the switch must be set to "Source".
(24) Subsonic Filter Switch
Used to cut off harmful low-frequency noise
such as turntable rumble etc. during recording
from phonograph records. At other times, the
switch should be set to "Off".
(29) Eiect/Load Button
This button is used for ejection and insertion
of the cassette.
(3O) Tape Selector Switches
ln recording, the correct switch must be
selected for the tape in use. (-p. 10)
(31) Input Level Controls
Serve to separately adjust the recording level
for left and right channel.
(27) Auto Rec Standby Button
When this button is pressed, the lape is
automatically rewound or fast-forwarded and
runs from the start for 6 seconds in the Rec
Mute condition. The deck then goes into the
record-standby mode. (-p. 8)
(32) Head Height and Azimuth Alignment
These adjustments have been calibrated at the
factory for optimum performance. DO NOT
adjustments should only be made by qualified
service technicians.
After reading the instructions for your amplifier
or receiver, use the shielded cables with RCA
plugs (provided with the deck) to make
connections as shown in the chart. Take care
not to mix up left and right channels. While
making connections, all power switches should
Remote Terminal
Remote Controt Unit RM-15
be OFF
Headphones with an impedance of 8 to 150
ohms can be connected to the Phones jack on
the front oanel.
Microphone Gonnections
As this deck has only line input facilities, a
separate microphone mixer with line-level
outputs must be used for microphone
recordings. Connect the output of the mixer to
the deck's "Line Input" jacks.
Nakamichi offers the optional MX-1OO
Microphone Mixer, which provides three inputs
for left, right, and center blend (L+R). To
power the MX-l00, the separate PS-100
Power Supply is required.
Remote Control
The optional remote control unit RM-15
permits operation of the deck's tape transport
functions from any convenient location.
Line Terminals
To AC Wall Outlet or
To Amplifier's
"Rec Out" Terminals
Amplifrer's AC Outlet
To Amplifier's
"Tape Play" Terminals (L,R)
Preamplif ier, Amplitier
or Receiver
Precautions Before Operation
This deck incorporates a muting circuit
which is active for about 7 seconds after
the power was switched on, until all circuits
have become stable. During the muting
interval, the Stop button indicator flashes
and tape transport operation is not
possible. However, the Eject/Load button
and the Reverse button can be ooerated.
lf the power is switched on while the Timer
switch is set to "Rec" or "Play", recording
or playback will start automatically. To
prevent accidental erasure of a tape, be
sure to set the Timer switch to "Off" when
the timer function is not desired.
lf the reverse operation cannot be
performed due to an obstacle in front of the
cassette deck, the cassette compartment
will return to its initial position. The
left-hand spindle will rotate slightly and the
tape counter indication may change. This
behavior is normal and not a fault with the
cassette compartment may also be opened
manually while the power is off. In this
case, pull the base section out
approximately 2 or 3 seconds after the
power was switched off. When the
compartment is pulled out completely, the
lock engages. To reset the cassette, the
power must be switched on and the
Eject/Load button pushed.
Be careful not to exert excessive force on
the cassette compartment cover.
This deck incorporates a special circuit
designed to take up any loose tape inside
the cassette. When a cassette is set and
the cassette comoartment closed and also
when the power is switched on, the
Voltage Selector
AC voltage is factory-set for the country in
which you purchased your cassette deck.
The voltage selector permits re-setting of
mains voltage in case the deck is to be
used in a different country.
Safety regulations in certain countries
prohibit inclusion of a voltage selector. This
feature, therefore, may be absent from your
22O -24OV
Insert a cassette, referring to "cassette Insertion and Removat,,on page 3.
(1) Set the Equalizer switch to the required
(1) Set the Tape Selector switches and the
position for the tape in use.
(2) Set the Dolby NR switches to the same
position as used for recording.
(3) Press the Play button to start playback.
When the Play button is pressed in the
eject condition, the cassette is
automatically drawn in, set at side A, and
playback starts.
(4) Adjust the desired listening level with the
Output Level control.
. With this deck you can go from any mode
into any other (for example from playback
to rewind, from rewind to fast-forward, etc
without having to press the Stop button.)
. During playback, this deck's Peak Level
meters display the level recorded on the
tape. Readings are not affected by turning
the Output Level contror.
for the tape in use.
(2) Select the desired position of the Dolby NR
switches. For recording from FM
broadcasts, set the MPX Filter switch to
"On". For recording from phonograph
records, set the Subsonic Filter switch to
(3) To put the deck into the record-standby
mode, push the Pause button while keeping
the Record button depressed.
(4) Set the Monitor switch to "Source" and
adjust the recording level with the Rec
Level controls while watching the indication
of the Peak Level meters.
(5) Press the Play button to start recording.
(6) To check the quality of the recording in
progress, you can monitor the playback
signal by setting the Monitor switch to
"Tape". In the "Source" position, the input
signal before recording is heard.
For short-term interruption of recording,
Dolby NR System
This cassette deck provides a choice between
the Dolby B{ype and the Dolby C{ype noise
reduction systems. The Dolby B-type NR
provides approximately .l O dB ol noise
reduction in the high frequencies. The Dolby
C-type NR is a Jurther refined system, which
achieves a S/N ratio improvement of about
press the Pause button to set the deck to
the record-standby mode. To resume
recording, press the Play button.
. Be careful not to press the Eject/Load
button by mistake during recording, as
this will result in the recording being
interrupted and the tape being ejected.
Equalizer switch to the required positions
20 dB in the range trom 2 kHz to 8 kHz, where
noise is most readily audible.
For playback of a tape which was recorded
with the B{ype NR, set the Dolby NR switch to
"8". For playback of a tape recorded with
Dolby Ctype NR, set the switch to "C".
Record Level Setting
For good recordings, it is essential to maintain
a high signal-to-noise ratio. 11 the record level
is set too low, tape hiss will impair the
playback sound quality. lf it is set too high, the
tape will be driven into distortion. Refer to the
chart below to set recordino levels.
| !-,. ! | --uetat tape
| ! , lf Adjust recording levels so that these
dB) light up
I i , -:-[ ind-icators (approx. +e peaks.
L !occasionally on signal
-! \
.l r'_l . Normal-Position,
] :- :! I Adjust recording levets so that these
i- 'o i I indicators (approx. +5 dB) light up
]lr i '"
i I occasionally on sisnal peaks.
"" rl
lttt ""." tlrl
Itt t-,"-- -trl
The above values should be used as a general
guideline. Actual requirements may vary to a
certain degree, depending on the tape in use
and the recording source,
Timer Recording or Playback
(1) Establish connections as shown in the
chart, and switch on the power to all
(2) For timer-activated recording, set the
recording level to suit the expected signal.
For timer-activated playback, set the Output
control to the desired level.
(3) For timer-activated recording, set this
deck's Timer switch to "Rec". For timeractivated playback, set the switch to "Play".
(4) Set the timer to the desired operation time.
(5) At the pre-selected time, the timer will
supply power to the components, and
recording or playback will start
Be sure to set this deck's Timer switch
to "Off" when timer recording or
playback is not to be carried out.
lf the record-protection tabs of the
inserted cassette are removed,
timer-activated recording is not possible
and the deck will go into the stop mode.
lf the power to the deck is cut off while
the cassette is being rotated, the
cassette compartment will remain in the
eject condition when the power is
switched on again. lf consecutive
recording is to be carried out with a
timer, set the timer so that oower will
not be switched off while the cassette ls
being rotated.
To AC Outlet
The Auto-Reverse System
lAuto-Reverse Operation Using the
Reverse Mode Switchl
When the Reverse Mode switch (marked "Auto
Reverse") is set to "Off", the auto-reverse
system is inactive and the RX-505 operates as
an ordinary cassette deck with automatic stop
at the tape end after playback or recording of
one side.
) Auto-Reverse Playback
When the Reverse Mode switch is set to
side B is played back automatically after side
A is terminated. At the end of side B. the taoe
lf the switch is set to
, sides A and B are
played back in endless succession.
When the taoe end is reached in fast-forward
or playback, the cassette is automatically
reversed, then the tape is forwarded for the
leader tape section, and playback starts at the
beginning of the other side.
record, playback or pause mode, the cassette
is reversed and the deck goes again into the
Skip Function
respective mode.
. For protection of the tape mechanism, the
Reverse button is inoperative during
fast-forward and rewind.
o lf the Reverse button is pressed again
during the reverse operation, the cassette
is reversed once more, but regardless of
the previous mode, the tape will be in the
stop mode. Therefore, il the Reverse button
was pressed by mistake, pressing it
immediately once more causes it to operate
as a stoo button.
When the Skip switch is set to "On", a blank
section (recording level below - 30 dB) of
more than 40 seconds duration during
playback will cause the tape to be
fast-forwarded to the end of the side. ln
combination with the Reverse Mode switch,
this feature is also useful for swift cassette
reversal at the tape end after the recorded
section of one side is terminated.
. lf a musical selection contains a very
low-level recorded section (less than
-30d8) of more than 40 seconds, the skip
function may be triggered even during
playback of this selection.
(1) Playback of Side
Direction of Tape
Reverse Mode Switch Setting
Stop at the end of side B
after playback of A-*8.
(2) Auto-Reverse Recording
and B.
When the Auto Reverse switch is set to
and the deck is in the record mode,
auto-reverse recording will be carried out, in
Endless ptayback of sides A
the order of side A $
s;6. B. At the end of
side B, the tape stops automatically. Even with
the Reverse mode switch set to (l) ,
auto-reverse recording in the order of
side B I
side A is not possible.
r lf the record-protection tabs of side B are
removed, tape run of side B will be in the
playback mode.
the skip switch is set to "on" and a
blank of more than 40 seconds as
encountered, the tape is automatically
tast-forwarded to the end ol the side for
cassette reversal.
(1) Recording on Srde A
Directjon of Tape Travel i/bde Switch Settings
[Operation of the Reverse Button]
When the Reverse button is oressed in the
stop mode, the cassette is reversed and loaded
again. When the button is pressed in the
I\ 2
|,r,oo u,"no o, ",0" "
after rccordins of
Special Features
Auto Rec Standby
Auto Rec StandbY
(2) Rewind
The Auto Rec Standby button has two different
functions, depending on whether it is pressed
once or twice.
(1) Press the button once if you are at some
point on a tape and you want to start
recording again from the beginning of the
same side (for example to recommence a
recording which has not turned out as
plarmed, etc.). The deck automatically
perlorms the following operating sequence:
rewind to the beginning of the side I
fast-forward for the portion of the leader
tape *6 seconds tape run in Rec Mute
condition * record-standby mode.
(During this operation, the Record indicator
Direction ol
(4) 6 seconds
[email protected] Mute
Wth tapes which are already rewound to the
beginning, this sequence starts from (3).
(5) Record Standby
(1) Button pressed twice
during tape run of side A.
(2) Fast-Foruard
(2) Button Pressed Twice
Direction ol Tape Travel
This feature is also handy with a tape
which is already rewound to the beginning.
Pressing the button will result in the
following sequence: fast-forward for the
portion of the leader tape + 6 seconds
tape run in Rec Mute condition I
record-standby mode.
(2) Press the button twice in short succession
(within 0.5 seconds) if you are at some
point ol side A, but want to start recording
from side B. The deck automatically
performs the following operating sequence:
fast-forward to the end of side A I
cassette reversal 4 fast-forward for the
portion of the leader tape I
6 seconds
tape run in Rec Mute condition d
Auto Fade
By using this feature for auto-reverse
recording/playback, a smooth transition from
side A to side B can be achieved.
(1) Use for Auto-Reverse
lf the Auto Rec Standby button was
operation, the Record indicator flashes.)
pressed by mistake, the operation can
be cancelled by pressing the StoP
This operating sequence can be
performed also with the Reverse Mode
switch set to "Off".
lf you are at some point of side B, the
operation described in (2) is not
possible, and the operating sequence of
(1) only will result.
During {ast-forward or rewind, the Auto
Rec Standby button is inactive.
lf the record-orotection tabs ot a
cassette are removed, the tape will stop
after being forwarded for the leader tape
(2) Use For Recording of One Side
the same point as in recording, resulting in a
swifter transition between sides for unmarred
music playback.
. For ordinary tape playback, the Auto Fade
switch should be set to "Off".
lf the Auto Fade switch is set to "On" while
performing ordinary one-side recording
(Reverse Mode switch set to "Off"), automatic
fade-out will be performed at a point
approximately 20 seconds before the leader
tape at the end of the side, and the recording
will be terminated.
When the Reverse Mode switch is set to
and auto-reverse recording is
performed, setting the Auto Fade switch to
"On" will cause the following operating
sequence to be carried out from a point
approximately 20 seconds before the leader
tape at the end of side A (this point is detected
automatically by the deck): automatic
record-standby mode. (During this
Auto Fade
Rsording on Side A
Fadeout Within
2 Seconds
fade-out within 2 seconds I cassette
reversal to side e Q fade-in within 2
seconds Q ordinarY recording.
At the end of side B, automatic fade-out is
performed approximately 20 seconds before
the leader tape, and then the recording is
(4) Fade-ln Within 2 Seconds
Fadefunction, setting the Reverse Mode
Switch to -D and the Auto Fade switch to
"On" will cause the cassette to be reversed at
At a point 20 seconds belore leader tape at
end of side B, fade-out is performed and
recording is terminated.
Program Seek
Reel Hub Switch
When using the Auto Fade function for
recording or playback, the Reel Hub switch
must be set to "Large" (for cassettes with
large hub diameter) or "Std" (for cassettes with
standard-size hubs). lf the Reel Hub switch
setting is inappropriate, correct detection of
the auto-fade point is not possible.
Cassette with a playing time of one hour or
more (C-6O, C-90 etc.) have standard-size
hubs and the required switch setting for such
cassettes is "Std". Cassettes with a shorter
playing time (C-46 etc.) may have large hubs,
as do for example the C-46 types of
Nakamichi's EXll, SX, SXll, and ZX tape. For
these casssettes, the switch must be set to
(2) Program Seek of Previous Selection
lf the Program Seek button is pressed in the
rewind mode, the beginning of the present
selection is located in rewind, and playback
starts automatically from this point. During this
operation, the indicator of the Rewind button
lights up and the Play button indicator flashes.
lf the Program Seek button is pushed once
more after the start of the Program Seek
operation, the beginning of one section earlier
is located and playback starts from there. In
this case, the Play button indicator first flashes
in longer intervals and resumes the normal
blinking cycle after the beginning of the first
selection has been passed by.
r lf the Program Seek button is pushed at a
point between two selections and there are
more than 4 seconds until the beginning of
the next selection, this blank is detected
and playback starts from there.
. lf the section between two selections
contains record scratch noise etc- or the
blank is less than 4 seconds long, the start
of a selection may not be located correctly.
. During the Program Seek operation, the use
of the cueing function is not possible.
This feature operates by detecting blank
sections (recorded level below -30 dB) of
more than 4 seconds between selections and
automatically starts playback from this point. lt
can be used to locate the next and the
previous selection.
(1) Program Seek of the Next Selection
lf the Program Seek button is pressed in the
stop, playback, fast-forward, pause or cueing
mode, the following operatrng sequence is
performed: fast-forward
detection of
the start of the next selection r) rewind
for a small interval $
OhVback from the
beginning of the selection. During this
operation. the indicator of the Fast-Forward
button lights up and the Play button indicator
ll the Program Seek button is pushed once
more after the start of the Program Seek
operation, the next selection is skipped and
playback starts from the beginning of the
second selection. In this case, the Play button
indicator first flashes in longer intervals and
resumes the normal blinking cycle after the
beginning of the first selection has been
passed by.
('l) Program Seek of Next
One more push of the button during operation
->- :>l>. causes playback of the second
(1)When button is pushed,-++->(2)tape isfast-foMardedto
(2) Program Seek ol
Previous Seleclion
- - -
(3) rewound a little, and
playback starts.
One more push ot the button during operation
{2) begtnntng ot presenl
_ _l> setectron 's detected In
causes playback ot the j'-<<-<<previous selection.
- l_.-.-..-l>
rewind. (t) When bullon
(3) and
Standard-Hub Cassette
Reel Hub Radius 11 mm
Auto Rec Pause
lf the Auto Rec Pause switch is set to "On", a
no-signal condition during recording (recording
level below -30 dB) of more than 45 seconds
will cause the tape to be rewound for the
equivalent of 30 seconds. and then the deck
enters the record-standby mode. Thus '15
seconds after the recording signal stopped, the
deck automatically goes into standby, which
prevents unnecessary tape overrun and
eliminates the need to rewind the taoe and
search for the end location of a recording. To
re-start recording, press the Play button.
. lf recording is performed at a very low level
(below -30 dB) for more than 45 seconds,
the Auto Rec Pause function may be
triggered even during a musical selection.
. The Auto Rec Pause function is triggered
also if recording is carried out in the
Master Fader "Down" condition or the Rec
Mute button is kept depressed for more
than 45 seconds.
lf the Cueing button is pressed during
fast-forward or rewind, the winding speed is
reduced to one-third and the recorded signals
from the tape can be heard. When you
approach the desired spot on the tape, you can
further reduce winding speed to one-sixth by
pressing and holding the Fast-Forward or
Rewind button. lf you have moved the tape too
far in one direction, you can change the
direction of tape travel while remaining in the
cueing mode simply by pressing the opposite
fast-winding button. Pressing both fast-winding
buttons simultaneously will stop the tape with
the deck remaining in the cueing mode, and
releasing both buttons simultaneously causes
the deck to enter the pause mode. In this way,
any desired spot on the tape can be easily
rs pushed
during rewind,
playback starts trom there
Cueing (l)
Winding speed reduced to one-third
Cueing (2)
Winding speed redJced to one-stxlh wf'tle
bulton is kept depressed
Cueing (3)
Change of cueing direction
Cueing (4)
Tape stops in the cueing mode
Pause mode rs enlered il bolh bultons are
released [email protected]
By pressing the "Down" button of the
Fader, fade-out (gradual level decrease
zero) can be performed automatically
recording. After having decreased the level
pressing "Down", fade-in (gradual
increase up to the previous setting) can
performed automatically by pressing the
You can choose between two fading
Depressing "Up" or "Down" strongly (two
clicking sounds of the switch) and keeping the
button depressed causes the fading process to
be performed in about 1 seconds. lf the button
is depressed lightly (one click of the switch) or
released after one push, the process takes
about 2 seconds. The respective fading mode
is indicated by the brightness of the indicators.
The operation of the Master Fader can
changed from "Up" to "Down" or from
"Down" to "Up", but it cannot be
The Master Fader is operative only in the
record and record-standby modes. When
these modes are released, the setting
automatically becomes "Up".
When the Rec Mute button is pressed
recording, a blank portion is recorded on the
tape for as long as the button is kept
depressed. lf the Monitor switch is set to
"Source", the line and headphone outputs are
not muted so that is possible to continuously
monitor the input signal.
Punch-ln Recording
When during playback the Record button is
pushed while keeping the Play button
depressed, the deck smoothly enters the
record mode without tape travel being
interrupted. This is useful for example to insert
narration on blank sections left between
selections in a previous recording, etc.
lf the deck is in the oause mode and the
Record button is pushed while keeping the
Pause button depressed, the Record button
indicator flashes for about 2 seconds and then
the record-standby mode is entered.
Tape Selector
Normal Position
Eq (psec)
Chrome (Gobalt)
sx( rr )
Metal Position
This cassette deck was calibrated at the
factory with Nakamichi reference tapes. To
obtain optimum results and fully realize this
deck's potential, the use oJ Nakamichi tapes is
recommended. When using other tapes, you
should choose tapes from the list, whenever
Bias Tune Control
FR Metal
This deck provides a bias tune control which
permits fine adjustment of the bias current
after the standard values have been set with
the taoe selector switches.
When using tapes from the list, the Bias Tune
control should be left in the center click-stop
position. When using other tapes, adjust the
control so that the tonal difference between
the input signal ("Source") and the recorded
signal ("Tape") is reduced to a minimum.
(1) Compare the input signal ("Source") with
the recorded signal ("Tape"). lf the
recorded signal sounds brighter than the
original source, turn the Bias Tune control
towards the right (+).
(2) lf the recorded signal sounds duller than
the original source, turn the Bias Tune
control towards the left (-).
(3) By repeating steps (1) and (2) and
monitoring the results, adjust the Bias Tune
control to minimize any sound quality
Be careful not to exert excessive pressure
on the cassette compartment cover.
mportant to regularily clean the
-==: surfaces and transport section, etc.
- : -::m nation caused by tiny particles
.-:ooed from the tape onto these parts can
-: - - -re the cause of drop-outs and severely
Removal of Cassette Compartmenl Cover
While steadying the base section of the cassette
compartment with the middle finger, grip the
cover between thumb and index finger and push
it in the direction indicated by the arrows. The
-sponse ano
..:.,;-and-f utter characteristics. Perform
: :a:
snap lock is released and the cover can be
ng as follows.
:a-c,,,e the cassette compartment cover
'-; :.= -t co-dit on, and then press the
: :-::: :^e Play button and clean the
':,: , ng pressure rollers by holding a
I (n) (n
ir I
(, 1r
== -='e'u tnat the cotton tip does not get
:=-g'rt between the roller and the capstan.
Dause button to release the
:-:ssJre ro lers from the capstans. Now
: :a- lne capstans and the surfaces of the
-='-:s and tape guide with a cotton-tipped
:<. Be careful not to apply too much
Take specia care not damage the
:::: gu de and the tape pad lifter.
. j,fter cleaning, make sure that no cotton
Reattachment of Cassette Compartment
Support the cassette compartment with your thumb
Press the cover down with the index f inger while
pulling it towards you with the middle finqer to
engage lhe snap lock.
strands are left on any of the cleaned
playback Head
Dlj w ld n
?A\" A-::.,\'<
:,:::--: pped st ck lightly against the roller
:- :-e side turntng away from the capstan.
--ao o-rtor to slide the cassette
,:^.:a':ment n.
-' :'=ss tne
Capstan Pressure Pad
After a longer period of use, there can be a
build-up of residual magnetism in the heads
and capstans. Such residual magnetism can
Induce noise and partially erase the high
frequencies of a tape being played. To prevent
this, you should demagnetize these parts about
once every 50 hours of use with the Nakamichi
DM-10 Demagnetizer (optional) or any other
properly designed demagnetizer. For details,
refer to the instruction manual of the
All important moving parts of this cassette
deck are fitted with long-life, oil-less
^ case of serve contamination, moisten
a small amount of
:cmmercrally available cleaning fluid
=soectally designed for this purpose.
i':er cleaning, wait until any residue
-as completely dried off before playing
:.e cotton tip with
Cleaning the Faceplate
Clean the faceplate only with the supplied
polishing cloth. Never use alcohol, solvents,
ammonia or abrasive cleaning agents.
mode cannot be entered.
:€sSive playback hiss
--:,3n sound levels, drop-outs,
:.! :ess ve wow,/flutter.
ete erasure
s:crled record/playback sound.
-e.ord mode is entered, but cannot
Probable Cause
1. Cassette tabs have been removed.
1. Place adhesive tape over tab openlng or use new
2. Head is magnetjzed
2. Demagnetize head.
3. Heads and/or capstans and pressure rollers dirtv
4. Faulty cassette.
3. Clean these parts.
4. Replace cassette.
5. Erase head dirty
5. Clean head and pressure rollers
6. Program material itself is distorted.
7. Recording levels are too high.
6. Check program material.
7. Wide dynamic range permits some short{erm overload,
B. Heads dirty.
9. Wrong setting of tape selector switches.
but excessive recording levels wlll cause distortion.
Adjust recordin g levels.
8. Clean heads.
9. Select correct setting for the tape in use.
10. Input disconnected
1 1. Head dirty.
10. Check connections.
1 1. Clean head.
(cont. on next page)
t"on,. rrom previous pase)
Probable Cause
Cannot playback
Dull high
2. Output disconnected
13. Head dirty.
2. Check connections
13. Clean head.
4. Heads dirty.
5. Tape selector switches and/or equalizer switch not
14 Clean heads.
Select correct positions for tape in use
Hum heard during recording or
6. Strong induction fields near
7. Signal cable or connector grounding
16. Keep deck away from amplifier, transformers, fluorescent
lamps, etc.
7. Replace signal cables.
Specif ications
Heads......................3 (erase head x 1, record head x 1, playback head x .l)
Motors (Tape Transport).. PLL servo motor (capstan drive ) x 1
DC motor (reel drive) x 1
Power Source. . . .
OO, 20, 20/220-240, 22O or 240 V AC, 50/60 Hz
(According to country of sale)
Power Consumption.......33W max.
Tape Speed.....
1-718 ips. (4.8 cm/sec.)
Wow-and-Flutter Less than 0.04% WTD RMS
Less than a 0.08% WTD Peak
Frequency Response .....20H2 - 2O,OO0 Hz+3 dB (recording level -20 dB)
70 ps, ZX tape>
Track Configuration.......4 tracks/z-channel stereo (auto-reverse recording
Signai-to-Noise Ratio ... .. Dolby C-Type
on <
Better than 70 dB (400 Hz, 3% THD, IHF A-WTD
Dolby B-Type NR on <70 irs, ZX tape>
Better than 64 dB (4OO Hz, 3% THD, IHF A-WTD
Total Harmonic Distortion . Less than 0.9% (4oo Hz, o dB, ZX tape)
Less than 1.0% (4Oo Hz, O dB, SX, EXtr tape)
Erasure ..........
Better than 60 dB (1 OO Hz, O dB)
.. Better than 36 dB (1 kHz, 0 dB)
Bias Frequency..
105 kHz
Input (Line)
....5O mV/70 kohms
1.0 V (400 Hz,0 dB, output level control at max.)
2.2 kohms
..... 1 2 mW (400
Hz, 0 dB, output level control at max.)
ohms load
Fast-Winding Time........Approx.60 seconds (with C-60 cassette)
Dimensions......... .. ..450 (W) x 144 (H) x 300 (D) millimetres
17-3/4(Wl x 5-11/16 (H) x 11-13/16 (D) inches
Approximate Weight ...... 10 kg
22 lbs.1 oz.
Specification and appearance design are subject to change for further
improvement without notice.
o Noise Reduction system manufactured under license lrom Dolby Laboratories
Licensing Corporation.
. The Word "DOLBY" and the Double-D-Symbol are trademarks of Dolby
Laboratories Licensing Corporation.
Betterthan60dB(1 kHz.0dB)
Optional Accessories
5 Remote Control Unit
SP-7 Stereo Headphones
ZX Metalloy Cassette Tape
c-60, c-90
SX II Super Ferricobalt Cassette Tape
c-60, c-90
SX Ferricobalt Cassette Taoe
c-60, c-90
EX tr Ferricrystal Cassette Tape
c-60, c-90
EX Ferrioxide Cassette Taoe
c-60, c-90
DM-1 O Head Demagnetizer
Nakamichi Corporation
Nakamichi U.S.A. Corporation
Nakamichi GmbH
Tokyo Office
Shinjuku Daiichi Seimei Bldg.
19701 South Vermont Avenue
Stephanienstrasse 6, 4000 Diisseldorf
Phone : (0211) 359036
2-7-1 Nishishinjuku, Shinjuku-ku, Tokyo
Phone (03) 342-4461
rebx'. 2324721 (NAKAM J)
Torrance, California 90502
Phone : (2l3) 538-8150
O-840607E Printed in Japan
Was this manual useful for you? yes no
Thank you for your participation!

* Your assessment is very important for improving the work of artificial intelligence, which forms the content of this project

Download PDF