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Input Gain Control with Gain Matching: The
input gain control is not a volume control. It matches
the output of the source unit to the input level of
the amplifier and features Gain Matching to prevent
clipping the input. Use the KEY500.1 Gain Match
track from
www.KICKER.com/test-tones
with the
KEY Auto-Setup to reach the most accurate and best
performing settings.
HI-PASS (Subsonic filter): Use the HI-PASS knob
of the amplifier to set the internal high-pass crossover
from 10–40Hz. The amplifier will pass audio above
the selected frequency threshold. This is used to
protect the subwoofer driver from over-excursion due
to ultra-low frequencies. Typically you want to set it
one octave below the enclosure's tuning frequency
(eg if the box is tuned for 40Hz, use a setting of
20Hz).
LO-PASS: Use the LO-PASS knob of the amplifier to
set the internal low-pass crossover from 40–160Hz.
The amplifer will pass audio below the selected
frequency threshold. The subwoofer should only play
deep sub-bass notes. If you hear vocals from the
subwoofer, try lowering the crossover point until only
the sub-bass is heard.
BASS BOOST: The variable bass boost control
on the side of the amplifier is designed to give you
increased output, 0–6dB, at 40Hz. The setting for
this control is subjective. If you turn it up, you must
readjust the input gain control to avoid clipping the
amplifier.
REMOTE BASS: With the optional CXARC remote
bass level control, you have the ability to control the
output level of the amplifier remotely. To surface-
mount the remote bass level control, simply screw
the remote to the chosen location, then run the cable
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