JVC KD-LH911 Manuel D'instructions page 26

B Subwoofer
1 To select the cutoff frequency to
the subwoofer.
55Hz: Frequencies higher
85Hz: Frequencies higher
115Hz: Frequencies higher
2 Adjust the subwoofer output level.
3
26
than 55 Hz are cut off
to the subwoofer.
than 85 Hz are cut off
to the subwoofer.
than 115 Hz are cut off
to the subwoofer.
0 (min.)
to 8 (max.)
C VolAdjust
To adjust the input level of each
source (except FM).
Adjust to match the input level to the
FM sound level.
D Loudness
To adjust the loudness to produce a
well-balanced sound at low volume
levels.
⁄
Exit from the setting.
–5 (min.)
to
+5 (max.)
On/Off