Yamaha YHT KX-493 User Manual

Page 10

DOLBY NR button setting (in step 2)

DOLBY NR (OFF/

C/MPX) button

Each time this button is pressed, Dolby NR switches as
follows:

B(MPX OFF) Recording with DOLBY B NR

Only the

B indicator lights.

C(MPX OFF) Recording with DOLBY C NR

Only the

C indicator lights.

B MPX ON

Recording an FM broadcast with
DOLBY B NR

B and MPX FILTER indicators light.

C MPX ON

Recording an FM broadcast with
DOLBY C NR

C and MPX FILTER indicators light.

OFF

Recording with no noise reduction
No indicator lights.

MPX filter:

FM stations transmit a 19 kHz pilot signal in addition to
the broadcast program. Sometimes this pilot signal
may leak into the audio output depending on the tuner
and broadcast conditions. This signal can cause
improper operation of the Dolby NR systems.
Activating the MPX filter (B TYPE/C TYPE MPX ON
settings) will effectively remove the signal.

AUTO TAPE TUNING button (in step 4)

Pressing this button during the REC/PAUSE mode will
activate the Auto Tape Tuning that makes it possible to
internally determine the optimum recording characteristics
(bias and recording sensitivity) according to the loaded
cassette tape in about 20 seconds.
To perform the Auto Tape Tuning, send the tape leader
part forward and set the

PLAY/TRIM

control and the

BIAS

ADJUST

control to the center position before pressing the

AUTO TAPE TUNING

button. When the Auto Tape Tuning

is completed, the TAPE TUNING indicator lights. After
completion of Auto Tape Tuning, 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 unnecessary.
When recording on the same type cassette tape of a
different brand, another Auto Tape Tuning is advisable
for much more accurate setting of the recording
characteristics.

AUTO TAPE TUNING

The Auto Tape Tuning function improves the quality of
your recording, permitting critical adjustment of the
deck’s recording bias and sensitivity for best results
with every tape you use.
With the Auto Tape Tuning function, the recording
characteristics (recording bias and sensitivity) are
automatically adjusted while recording and playback
operations in about 20 seconds, to accurately match
the characteristics of loaded tape.
For example, the recorded (output) level (A in the
figure) may differ from recording (input) level (B in the
figure), due to widely varying characteristics of
cassette tapes between brands.
Using the Auto Tape Tuning function, these differences
are effectively eliminated by adjusting the recording
bias (for high frequencies) and sensitivity (for overall
frequencies) according to the loaded cassette tape,
making a significant contribution to overall recording
quality (C in the figure).

Input Level

Output Level (dB)

Frequency (Hz)