JVC KS-DR3001D Instruction Manual page 5

CONTROLS
CONTROLS
①
POWER indicator
The green lamp lights while the unit is turned on.
② LPF (Low-Pass Filter) controller
Adjust the cutoff frequency (the Low-Pass Filter transmits
frequencies lower than the cutoff frequency) within the range of
50 Hz to 200 Hz. Adjust the level while listening to the sound. This
controller is preset to 50 Hz when the unit is shipped.
③ BASS BOOST controller
Turning this boosts the 45 Hz frequency within the range of 0 dB to
+18 dB. Adjust the level while listening to the sound. This controller
is preset to MIN when the unit is shipped.
④ INPUT SENS. (input sensitivity) controller
Set this control according to the line-output level of the center
unit connected with this unit. For the line-output level, refer to the
"SPECIFICATIONS" in the instruction manual of the center unit. This
controller is preset to 5 V when the unit is shipped.
INPUT SENS.
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