6
OPERATION
Automatic Turn-On Selection:
The KXMA series offers three different automatic turn-on modes that
can be selected on the end panel; +12V, DC Offset, and Audio. Using either the DC Offset or Audio
mode causes the REM terminal to have +12V out for turning on additional amplifi ers.
•
Remote Turn-On: Set the switch to +12V to use the remote turn-on lead from your source unit.
Run 18 gauge wire from the Remote Turn-On Lead on your source unit to the terminal labeled REM
between the amplifi er’s positive and negative power terminals. This is the preferred automatic turn-on
method.
•
DC Offset Turn-On: If Remote Turn-On is not an option, the next best setting is DC Offset. The DC
Offset mode detects a 3V DC offset from the HI-Level speaker outputs when the source unit has
been turned on.
• Signal Sense Turn-On: The Audio setting is the fi nal alternative for Automatic turn-on. This is a
Signal Sense turn-on method that detects the incoming audio signal from your source unit and
automatically turns on the amp. This turn-on method will not work properly if the input gain control is
not set appropriately.
Fader Switches:
Turn the Fader switch(es)
OFF
if you are running more than a single pair of RCA inputs
to the amplifi er. Turn the Fader switch(es)
ON
if you want to drive those channels from a single input. For
example, if you are using AMP 1, AMP 2, AMP 3, and AMP 4 RCA inputs, switch the
AMP 1/AMP 2
FADER
,
AMP 2/AMP 3 FADER
, and
AMP 3/AMP 4 FADER
buttons to
ON
.
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 amplifi er and features Gain Matching to prevent clipping
the input. For a quick setup, turn the source unit up to about 3/4 volume (if the source unit goes to 30,
turn it to 25). KICKER recommends using the test tones at https://www.kicker.com/test-tones/ to reach
the most accurate and best performing settings. Next, slowly turn (clockwise) the gain on the amplifi er up
until you see the Gain LED light up or hear audible distortion, then turn it down a little. If the
GAIN
knob’s
backlight comes on, the input is still clipping. For full instructions on Gain Matching, please see the next
page.
Crossover Switches with Frequency Multiplier:
Use the
XOVER
switches on the end panel of
the amplifi er to set the internal crossovers of
AMPS 1 & 2
to
OFF
,
HI-PASS
, or
LO-PASS
, and the
crossovers of
AMPS 3 & 4
to
OFF
,
HI-PASS
,
LO-PASS
, or
BAND-PASS
. When the switch is set
to
OFF
, a full bandwidth signal will be amplifi ed. Set the switch to
HP
if you want the amplifi er’s internal
crossover to serve as a high-pass fi lter. Set the switch to
LP
if you want the amplifi er’s internal crossover
to serve as a low-pass fi lter. Set the switch to
BP
when a specifi c frequency range is required. Never
change the crossover switches with the audio system on!
Set the
1X/10X
frequency multiplier switch to the setting that is appropriate for your application. A
setting of
10X
will set the range of the
AMP 1
&
AMP 2
crossovers to 100–5,000Hz, and the low pass
crossovers of
AMP 3
&
AMP 4
to 100–5,000Hz.
Mini-USB for internal use only; do NOT remove or tamper. KICKER is not responsible for any damage to
equipment resulting from connections made to this port.
KXMA800.8
PRT
GAIN
11
0
X-OVER
X-OVER
X-OVER
X-OVER
OFF/HP/LP
OFF/HP/LP
OFF/HP/LP/BP
OFF/HP/LP/BP
500
10
HI-PASS
Hz
500
40
LO-PASS
Hz
500
10
HI-PASS
Hz
500
40
LO-PASS
Hz
6
0
KICK EQ
dB
6
0
KICK EQ
dB
6
0
KICK EQ
dB
1X/10X
LO-PASS
RANGE
1X/10X
LO-PASS
RANGE
1X/10X
RANGE
1X/10X
RANGE
500
10
FREQ.
Hz
500
10
FREQ.
Hz
AMP1
AMP2
AMP3
AMP4
GAIN
11
0
GAIN
11
0
6
0
KICK EQ
dB
GAIN
11
0
GAIN
MATCH
GAIN
MATCH
GAIN
MATCH
GAIN
MATCH
2021 KXMA 8-CH Amp Rev E.indd 6
2021 KXMA 8-CH Amp Rev E.indd 6
4/6/2022 4:37:49 PM
4/6/2022 4:37:49 PM
