44English
To use the preferred method of setting the
input gain using a voltmeter or oscilloscope,
begin by turning off the amplifier and
disconnecting all speakers from it. Turn the
gain knob completely off (counterclockwise)
and all crossovers off, or to their least
effective setting. If a remote bass accessory
is connected to the amplifier, turn it
completely on (clockwise). Ensure all EQ
and DSP settings on the source unit such
as bass, treble, fader, seating position etc
are set to linear, flat, center, or off. Turn on
the amplifier. With an oscilloscope, probe
the signal coming from the source unit and
play a 0dB sine wave through your source
unit and increase the volume until you see
the waveform clip slightly. Turn the head unit
down one notch as this is the maximum
unclipped volume level of your source unit.
Sine wave tracks can be downloaded for
free from KICKER.com under the “Support”
tab. Use the 50Hz sine wave to set the gain
for a subwoofer and the 1kHz sine wave for
full-range speakers. Set your voltmeter or
oscilloscope to measure AC voltage. Place
the voltmeter’s probes on the amplifier’s
speaker output terminals. With the sine
wave playing, slowly turn the gain knob
clockwise and watch the AC voltage on the
voltmeter increase.
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