Kicker KX.4 Series - Manual (Page 7)

7
KX Amplifier
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Your Kicker amplifier has four rotary controls and two
switches on the end panel. These controls ensure the reliability
and performance of the amplifier, so they need to be set
correctly.
CROSSOVER SWITCHES
NEVER CHANGE THE CROSSOVER SWITCH SETTING WITH
THE SYSTEM ON!
The switches located on the end panel next to the RCA jacks
are for setting the internal crossover. In the OFF position the
amplifier passes a full range signal to the speakers. Use the LO
positon when connected to a subwoofer. The HI positon should
be selected when connected to any speakers which you do not
want to receive sub-bass information.
BEFORE TURNING ON THE SYSTEM FOR THE FIRST TIME,
MAKE SURE THAT THE FOUR ROTARY CONTROLS ON THE
SIDE OF THE AMPLIFIER ARE TURNED FULLY
COUNTER-CLOCKWISE!
GAIN CONTROLS
Remember, the gain control is not a volume control, it matches
the output of the head unit to the input level of the amplifier and
must be adjusted properly for best performance. All the way up
or down is not necessarily the best. Turn the head unit up to
about 3/4 volume. (eg. If the head unit goes to 30, turn it to 25.)
Next, turn (clockwise) the gain on the amplifier up slowly until
you can hear audible distortion, then turn it down just a little.
Adjust AMP 1 first, then proceed to AMP 2.
CROSSOVER CONTROL
The crossover is fixed at 80Hz high pass or low pass. This
control should be set to match your speaker requirements. For
example, if the amplifier is driving subwoofers, you will need to
set it to lo pass.
BASS BOOST
The BASS BOOST control is designed to give you increased
output at 40 Hz. The setting for this control is subjective,
however, if you turn it up, you must go back and adjust the gain
control to avoid clipping the amplifier.