Subaru 2009 Tribeca - Manual (Page 195)

! To change tone and balance control
modes
Each brief press of the “TONE BAL”
button (9) 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.)
The “TONE BAL” button is used for
selecting the following control modes:
Audio
5-17
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