Kicker KXMA.8 Series Owner'S Manual Download Page 6

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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)

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

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

OFF

HI-PASS

, or

LO-PASS

, and the

crossovers of

AMPS 3 & 4

OFF

HI-PASS

LO-PASS

, or

BAND-PASS

. When the switch is set

OFF

, a full bandwidth signal will be ampliﬁ ed. Set the switch to

if you want the ampliﬁ er’s internal

crossover to serve as a high-pass ﬁ lter. Set the switch to

if you want the ampliﬁ er’s internal crossover

to serve as a low-pass ﬁ lter. Set the switch to

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

X-OVER

OFF/HP/LP

OFF/HP/LP/BP

500

HI-PASS

500

LO-PASS

500

HI-PASS