21General operationBecker SurroundYou can use this function to activate vir-tual surround sound and select the vehi-cle size to optimise the surround soundfunction. Select 7rpxr
q in the soundsettings. Select 7rpxr
q and press therotary control/push button toswitch virtual surround sound on ( )or off ( ). Select Gh
trruvpyr or Hrqvvrqruvpyr (on = ).SubwooferYou can set the volume level of thesubwoofer output/ deactivate thesubwoofer output. Select Tisr
in the sound settings. Turn the rotary control/push buttonto select the required value.CrossoverUse this function to set the thresholdfrequencies for the front loudspeakers,the rear loudspeakers and the subwoofer. Select 8
r
in the sound settings. You may now select A
yqrhxr
,Srh
yqrhxr
or Tisr
.• A
yqrhxr
and Srh
yqrhxr
You can set the lower thresholdfrequency of the front and rearloudspeakers to a value of between 20and 150 Hz.• Tisr
You can set the upper thresholdfrequency of the subwoofer to a valueof between 50 and 150 Hz.Note:The Becker Surround function is notavailable for medium wave or shortwave.Note:Only one of the vehicle types in the listcan be active ( ).1019Note:A setting of "+10" indicates an increasein the volume of the subwoofer.Select ss to deactivate the subwooferoutput.In addition, Tisr
is deactivatedwith the crossover setting.1024 1025
