19
Installation
The MATCH PP 82DSP must be connected to
the head unit (radio) as follows:
Caution:
Carrying out the following steps will
require special tools and technical knowledge. In
order to avoid connection mistakes and/or dama-
ge, ask your dealer for assistance if you have any
questions and follow all instructions in this manual
(see page 13).
1.
After removing the radio from the dash using
appropriate tools, disconnect the vehicle harness
from the radio. Next, connect the vehicle harness
to the male connector of the MATCH cable harness,
see fig. 3
1
Depending on your car an additional car-specific
adaptor may be required.
A list of all cars and the respective adaptors can be
found on www.audiotec-fischer.com.
2.
Connect the female connector of the MATCH
cable harness or the car-specific adaptor to the ra
-
dio,
see fig. 3
2
.
3.
In case of the PP 82DSP the included MATCH
cable harness cannot and must not be used for the
power supply. Always directly connect the massive
screw terminals of this amplifier to your car’s battery
using appropriate wires (AWG 8 / 10 mm² or better).
Never use the power leads of the car radio itself!
Though the PP 82DSP only has a limited average
power consumption, it may draw very high currents
(up to 50A) for the fraction of a second due to its
dynamically controlled internal power supply.
Important: You may risk a severe damage of
your car radio and other electronic components
inside your vehicle or even a cable fire if you
use the car radio harness for the power supply
of the PP 82DSP!
Make sure to disconnect the battery before in-
stalling the PP 82DSP!
Connect the +12V power cable to the positive termi-
nal of the battery. The positive wire from the battery
to the PP 82DSP power terminals needs to have
an inline fuse (50 A) at a distance of
no more than
12 inches (30 cm) from the battery
. If your power
wires are short (less than 1 m / 40”) then a wire gau
-
ge of 6 mm² / AWG 10 will be sufficient. In all other
cases we strongly recommend gauges of 10 - 16
mm² / AWG 6 – 8! The ground cable (same gauge
as the +12V wire) should be connected to a com-
mon ground reference point (this is located where
the negative terminal of the battery is grounded
to the metal body of the vehicle), or to a prepared
metal location on the vehicle chassis, i.e. an area
which has been cleaned of all paint residues.
4. Connect the MATCH harness to the MATCH PP
82DSP, see
fig.
3
3
.
Optimizing the amplifier gain setting:
Turn on the car radio and the volume up gradually.
Maximum volume has been reached when loud-
speaker distortion becomes audible. To increase
volume range of the radio use the MODE switches
nos. 1 and 2 (refer to page 17) to reduce the overall
gain of the PP 82DSP. If your radio is at maximum
volume without any distortion being audible, you
can use the MODE switches to increase the am-
plifier overall gain by +2 dB. Be careful when using
this function.
Caution:
The PP 82DSP amplifier has a significantly hig
-
her power output than the car radio itself. Most
of the OE speakers in the car will not be able to
handle this extra power permanently. As long as
you do not replace the original speakers by lou-
dspeakers with higher power handling please
be very careful when you crank up the volume.
If you hear strong distortion, please reduce the
volume to an appropriate level in order to avoid
damaging your speakers.
Note: Audiotec Fischer is not responsible for
any damages to OE speakers that are used in
combination with the PP 82DSP!
Note - Cars equipped with MOST bus:
In cars equipped with MOST bus structure it is
mandatory to unplug the fiber-optic cable from
the original radio connector and insert it into the
radio connector of the MATCH cable harness,
which has a dedicated recess for this.
