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9

ENGLISH

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S

REMAIN

DOLBY S NR

DOLBY S NR is developed incorporating the concept of
professional-use DOLBY SR system into the present
DOLBY B/C NR.
It offers the noise reduction effect increased by about
40%, compared to the former DOLBY C NR, and also the
noise level of the low frequency range is reduced to 1/3.
Highly natural sound can be reproduced with the help of
the modulation controller, which regulates 5 NR units — 2
for low level sounds and 3 for high level, one of which is
for low frequency signals.
DOLBY S NR has also high interchangeability. The tapes
recorded with DOLBY S NR can well be reproduced by
the decks which are equipped only with DOLBY B NR,
headphone stereos or car stereos for example.

20

100

1k

10k 20k    Hz

10 dB

NR-OFF

C-NR

Noise Reduction Responce

S-NR

B-NR

Linear time tape counter and the tape length
setting

Use the linear time tape counter as an aid in locating a
point on a tape (–99 min. 59 sec. to 99 min. 59 sec.).  To
set the counter reading to "0:00", press the COUNTER
RESET button.  This counter is not an actual clock.
Rather, it is a counter with minutes and seconds divisions
when the tape length of the tape to be used is memorized.
To memorize the tape length, press the TAPE button so
that the desired tape length appears on the display.  The
tape length can be set to C-46, C-50, C-54, C-60, C-70,
C-80 or C90.

Note: Precision of counter

The tape counter is not a clock, and so there will be
some errors in the time display compared to the actual
playing time (this cannot be avoided, as a suitable
method is adopted to provide a time display not only
during recording and playback, but also during fast
forward and rewind).  The error depends on the type of
tape being used.

To display the remaining time

Press COUNTER REMAIN button so that the REMAIN
indicator lights. The remaining time appears in the display
a few seconds after pressing the PLAY button to start
playback.  Press again to return to the elapsed time.

÷

It is necessary to memorize the tape length with the
TAPE button beforehand.

1

High frequency sound is
too boosted.

2

Flat.

3

High frequency sound is
absent.

PLAY TRIM control adjustment

When the level of high frequencies is too boosted or
absent while playing a tape recorded on another cassette
deck, adjust the high frequency response with the PLAY
TRIM control.

When high frequencies are
absent, boost the high
frequencies.

+

When high frequencies are
too boosted, attenuate the
high frequencies.

PLAY TRIM

PLAY TRIM

0

+

0

REMAIN

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S

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1
2
3

10 dB

100

1 k

10 kHz

+

Summary of Contents for KX-690

Page 1: ... la série Natural Sound s KX 690 OWNER S MANUAL MODE D EMPLOI IMPORTANT Please record the serial number of your unit in the space below Model KX 690 Serial No The serial number is located on the rear of the unit Retain this Owner s Manual in a safe place for future reference ...

Page 2: ...d not be situated on a bed sofa rug or similar surfaces that may block the ventilation openings or placed in a built in installation such as a bookcase or cabinet that may impede the flow of air through the ventilation openings 9 Heat The appliance should be situated away from heat sources such as radiators stoves or other appliances that produce heat 10 Power Sources The appliance should be conne...

Page 3: ... cold or moisture Keep it away from sources of hum such as transformers or motors 3 Do not open the cabinet as this may result in damage to the deck or electrical shock If a foreign object should get into the deck contact your local dealer 4 Do not apply excessive force when operating switches and knobs 5 When moving the deck be sure to first pull out the power plug and remove all cords connecting...

Page 4: ...lows you to reduce unwanted vibration and modulation noise Fine Adjustment of Recording Characteristics with Auto Tape Tuning and Bias Adjust Control 160 kHz High Recording Bias prevents cross modulation beat distortion that can occur between the recording bias and the recording signal s high frequency content Play Trim Control for improved playback compatibility with other decks Easy Operation Se...

Page 5: ... are properly made and that the plugs are inserted firmly The LINE OUT PLAY jacks on the deck should be connected to the Tape PB Playback Input jacks on your amplifier receiver and the LINE IN REC jacks on the deck should be connected to the Rec Out Rec Output jacks on your amplifier receiver If you have YAMAHA amplifier or receiver numbered as 3 and 4 on the rear panel connection can be made easi...

Page 6: ...where the button was pressed Press this button to rapidly advance the tape POWER switch Press this switch to turn the power on and off Ÿ TIMER switch PLAY By using a commercially available audio timer this function permits timer activated playback REC By using a commercially available audio timer this function allows you to carry out unattended recording Cassette compartment Insert a cassette with...

Page 7: ...SEARCH and buttons simultaneously the tape will rewind to the beginning of the current selection and begin play REC PAUSE button Pressing this button engages the Rec Pause mode In this mode the PEAK level meters will function allowing you to monitor and set the recording signal level of the deck REC BALANCE and REC LEVEL controls Adjust the recording levels for the left and right channels with the...

Page 8: ...sed tape side facing down and the side to be played facing you To close the compartment push in the compartment door until it locks shut 3 PLAY MPX OFF MPX ON OFF ŸB ŸC ŸS DOLBY NR To stop playback Press the STOP button To fast forward the tape Press the button To fast rewind the tape Press the button To adjust the volume level Use the volume control of the amplifier or receiver To use headphones ...

Page 9: ...used is memorized To memorize the tape length press the TAPE button so that the desired tape length appears on the display The tape length can be set to C 46 C 50 C 54 C 60 C 70 C 80 or C90 Note Precision of counter The tape counter is not a clock and so there will be some errors in the time display compared to the actual playing time this cannot be avoided as a suitable method is adopted to provi...

Page 10: ...the selection To search for the selection located before the current selection To search for the next selection When the beginning of the current selection is played INTRO SCAN To play back the beginning of each selection automatically To play back each selection in the reverse direction The INTRO indicator lights during reverse intro scan 3 To play back each selection in the forward direction The...

Page 11: ...ed repeatedly up to 8 times 1 Press the REPEAT OFF 0 M FULL button so that the REPEAT 0 M indicator lights Full repeat With this function the cassette side being played can be repeated up to 8 times Press the REPEAT OFF 0 M FULL button so that the REPEAT FULL indicator lights 3 REPEAT OFF 0 M FULL Note The length between the start and end points of the 0 M repeat section should be more than 4 coun...

Page 12: ... REC LEVEL See Setting the recording level REC REC PAUSE AUTO TAPE TUNING See AUTO TAPE TUNING button PLAY MPX OFF MPX ON OFF ŸB ŸC ŸS DOLBY NR To stop recording Press the STOP button To stop recording temporarily Press the REC PAUSE button To resume recording press the PLAY button Tape counter and COUNTER RESET button Before starting recording press the COUNTER RESET button to set the counter rea...

Page 13: ...ning the tape automatically rewinds to the point where the Auto Tape Tuning began and the REC PAUSE mode is engaged The bias adjustment with the BIAS ADJUST control is possible even after this tuning To clear Auto Tape Tuning setting press the AUTO TAPE TUNING button once again or load any cassette tape of different type When recording on the other side of the tape another Auto Tape Tuning is unne...

Page 14: ...ntrol is for fine adjustment of the recording bias Normally it is not necessary to adjust this control since the recording bias can be automatically adjusted by the built in Auto Tape Selector and the AUTO TAPE TUNING button for different tape types However if you feel that your recording needs further bias adjustment to compensate for absent or distorted high frequencies adjust this control to yo...

Page 15: ...e counter MUTE SEARCH COUNTER RESET REC MUTE operation Inserting a blank space during recording A 4 second blank interval is automatically recorded on the tape and then the deck enters Rec Pause mode If a blank interval longer than 4 seconds is desired keep pressing the button as long as you want When the MUTE SEARCH button is released the deck enters Rec Pause mode after making a 4 second blank i...

Page 16: ... position 5 At the preset time the timer will turn power on to the amplifier receiver and cassette deck and begin playback It will shut power off at the preset time as well ending playback Timer recording Timer playback Amplifier or receiver Audio timer Tuner TIMER NATURAL SOUND STEREO CASSETTE DECK KX 690 POWER REMAIN RESET TAPE COUNTER PHONES LEVEL BIAS ADJUST PLAY TRIM MEMORY REPEAT OFF O M FUL...

Page 17: ...ed back at the Normal Type I NORM settings which will result in an unnatural high frequency emphasis This effect may be compensated for somewhat by adjusting the BIAS ADJUST to the plus direction during recording or by using the PLAY TRIM tone control and or the tone controls of your amplifier receiver during playback PROTECTING YOUR RECORDINGS All cassette tapes are provided with erasure protecti...

Page 18: ...ow carefully the instructions of the concerning materials such as cleaning fluid or head demagnetizer OPENING AND CLOSING THE SUB PANEL OPTIONAL REMOTE CONTROL TRANSMITTER To open the sub panel To close the sub panel Pinch roller Head CLEANING OF THE TAPE PATH Continued high quality performance of your deck is dependent upon periodic cleaning of the heads capstan pinch roller and all surfaces over...

Page 19: ...ith adhesive tape Blank sections must be at least 4 seconds long No remedy No remedy Play back in appropriate Dolby NR position Fault Tape doesn t move in recording or playback REC PAUSE button fails to function Sounds become faint and sometimes inaudible Recorded sound is distorted Tape is playing back but no sound is heard Excessive noise Excessive wow wavering of the sound Tape stops in the mid...

Page 20: ...ft and 30 Place the unit away from the strong light SPECIFICATIONS Track Configuration 4 track 2 channel stereo Motor DC servo motor capstan DC motor reel DC motor asist Head Recording playback hard permalloy Erase double gap Ferrite head Rapid Transport 95 sec C 60 Wow and Flutter WRMS 0 04 W Peak 0 07 Signal to Noise Ratio Dolby NR off 60 dB Dolby B NR on 68 dB Dolby C NR on 76 dB Dolby S NR on ...

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