User's Manual

318
Bass reduction
Low-frequency interference such as fans and road noise can be tiring if you are
exposed to it for a long period. By activating bass reduction, low-frequency
interference and sounds are reduced.
BASS
BASS
Press the + button (9) to activate Bass Reduction.
Press the - button (10) to deactivate Bass Reduction
and get level frequency response.
The standard setting is deactivated Bass Reduction.