Subaru 2000 Forester Owner's Manual page 19

To change control modes: Each brief press of the "T/B" button
changes control modes in the following sequence starting from volume
control mode. (When the radio is first turned on, the control mode is in
the volume control.)
Volume
(VOL)
B Bass control
Bass volume control indication
Select the Bass control mode by pressing the "T/B" button. In the
bass control mode, the display shows the indication as shown.
The bass control has total of 13 volume levels (B: –6 for minimum, 0
for middle, B: +6 for maximum). Choose desired bass volume level by
turning the volume control knob. The control function returns to vol-
ume control mode after about 5 seconds.
5-6
Bass Treble
(BAS) (TRE)
When the bass volume level is set at
the level +6
HG0085
Fader Balance
(FAD) (BAL)
HG0086