Technics RS-TR979 Operating Instructions Manual page 14

Recording
(continued)
Adjusting the sound characteristics in the high-frequency range
If ATC has been performed, the bias will be automatically ad¬
justed for a flat frequency response (refer to the graph at right). If
you wish to change the sound characteristics, use the bias-adjust¬
ment control to make the adjustment.
BIAS ADJUST
0
Bias-adjustment
control
The adjustment will be made more precisely by listening through
headphones. Connect the headphones to the headphones jack of
the deck or amplifier.
1 Record using the ATC function.
2
Re-wind and then play back the tape.
During playback, listen carefully to the sound
characteristics in the high-frequency range.
■ How to adjust the bias
® Bias becomes
bias adjust'
shallower; the treble C"
characteristic K))
increases. -
5
VV
+5
Bias becomes
deeper; the treble
characteristic
decreases.
After ATC
\r"
> *— \
-J-
_
^ ^
/
l'
1
20 200 Ik 20k
Frequency (Hz)
Adjustment of the tape characteristics during recording
3
If desired, use the bias-adjustment control
to adjust the sound characteristics.
(Refer to "How to adjust the bias" at right.)
The effects of the adjustment cannot be obtained during
playback. Re-wind the tape, make the recording again, and
then play it back.
4
Repeat step 3 until you have obtained the
desired sound characteristics in the high-fre¬
quency range.
Notes:
• It is not possible to adjust the bias for metal tape.
• The bias readjustment is not needed as long as you continue to
use the same type and brand of tape that was used when the ad¬
justment was first made.