Route the ground cable to the GND (GROUND)
terminal of the amplifier. In most cases it will
be best to keep the ground cable (-12 V) as
short as possible, i.e. to find a chassis contact
very close to the amplifier. The chassis contact
point must be absolutely clean and well sand-
papered, i.e. free from rust or paint. The (nega-
tive) ground power cable must have the same
cross-section as the positive power cable.
Keep in mind that bad ground contacts are the
cause of most audio interference (noise!) pro-
blems and amplifier overheating!
Run the positive power cable (+12 V) directly
from the positive terminal of the car battery to
the +12 V terminal of the amplifier. Make sure
the power cable makes good contact to the
battery, clean the battery pole from potential
corrosion before connecting the cable, prefe-
rably with a corrosion-resistant gold-plated
terminal.
For optimal protection of your car audio system
and your entire car against electrical fire
hazards from a short-circuit of the main power
cable with chassis ground, you must insert a
main fuse(holder) within the first 30 cm of
distance to the battery. The fuse type/value
should be matching the limitations of your main
power cable and the requirements of your car
audio system, i.e. minimum 60 Ampére with any
of the three X-PULSE amplifiers and 5 m power
cable with 20 mm2 cross-section.
ATTENTION!
Do not insert the main fuse until
the entire installation is completed!
Connect the loudspeaker cables to the spea-
kers or the corresponding crossovers and the
respective speaker terminals of the amplifier.
Use good quality speaker wires of minimum
2,5 mm
2
cross-section for the satellites and 2,5
mm
2
to 4,0 mm
2
for the subwoofer.
Be sure to follow correct polarity, positive
(“
”) to positive (“
”), negative (“
“) to
negative (“
“)!
Now remount the gray side panels using the
supplied Allen wrench and the hex-head
screws.
MINIMUM IMPEDANCE LOAD /
OPTIONAL BRIDGED OPERATION MODE
All three X-PULSE amplifiers have been desi-
gned to operate at impedance loads as low as
1 ohm per channel. Make sure, that the total
impedance load in bridged mode (concerning
XP600.4 and XP700.5 only) will never be less
than 2 ohms!
For connecting speakers in bridged mode,
please refer to the respective connecting dia-
gram printed on the output terminal blocks of
the amplifier. The channels can be operated in
bridged configuration without setting any inter-
nal switch on the amplifier. The mono-bridged-
mode will provide almost three times the rated
power output of a single stereo channel.
The XP600.4 is perfectly suited to drive a
sub/sat speaker system with the “rear” (3&4-
CH) channels bridged to drive the subwoofer.
The XP700.5 provides bridging option of the
“front” (1&2-CH) and “rear” (3&4-CH) chan-
nels, to drive – for example -a big passive
3-way system with high power handling.
Close the electrical circuit by inserting the main
fuse or attaching the battery terminal clamp.
After turning-on the head-unit - keeping the
volume level at zero - the OPERATING-PRO-
TECTION LED of the amplifier should light-up
green. If the LED is lit red, the installation is
faulty and the amplifier has switched to pro-
tection mode. Immediately turn off the head-
unit and re-check all the previous connecting
steps carefully!
IMPORTANT!
All RCA input signals from the
head-unit should be unfiltered, i.e. fullrange
signals in case you want to use the integrated
electronic crossovers of your X-PULSE ampli-
fier! Any pre-filtered signal will interfere with
the advanced filtering electronics! If you
intend to use the crossover options of your
head-unit (or DSP black box), make sure to set
the OPERATING MODE slide-switches of the
concerned channels to the FULL (fullrange)
position. Then proceed by configuring and set-
ting the crossover options and cross-over fre-
SETTINGS & ADJUSTMENTS
28
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