Yamaha YHT KX-493 User Manual download pdf (Page 10)

DOLBY NR button setting (in step 2)

DOLBY NR (OFF/ B/ 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).

B Input Level

Output Level (dB)

Frequency (Hz)

1 2 ... 5 6 7 8 9 10 11 12 13 14 15 16 17 18

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Yamaha YHT KX-493 User Manual Page 10

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