Yamaha AV-90PY Owner's Manual page 15

Adjusting the BALANCE control
Adjust the balance of the output volume to the left and right
speakers to compensate for sound imbalance caused from
speaker location or listening room conditions.
BALANCE
L 5
Note
This control is effective only on the sound from the front
speakers.
When you listen with headphones
Connect the headphones to the PHONES jack. You can listen
to the main sound through the headphones.
0
5 R
Adjusting the BASS and TREBLE
controls
BASS
0
— +
5
5
BASS : Turn this clockwise to increase (or counter-
clockwise to decrease) the low frequency
response.
TREBLE : Turn this clockwise to increase (or counter-
clockwise to decrease) the high frequency
response.
Note
These controls are effective only on the sound from the front
speakers.
TREBLE
0
— +
5 5
PHONES
15