Subaru 2001 Legacy Owner's Manual page 227

Audio
HBS041AA
n BASS control
The bass control adjusts the level of low pitch sounds. The bass is
adjusted by turning the knob from left to right in this condition.
Turn clockwise to increase the level of bass tones.
Turn counterclockwise to reduce the level of bass tones.
n TREBLE control
The treble control adjusts the level of high pitch sounds. The treble is
adjusted by turning the knob from left to right in this condition.
Turn clockwise to increase the level of treble tones.
Turn counterclockwise to reduce the level of treble tones.
B Balance control
HBS042BC
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