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C
AMPLIFIER LOCATION & MOUNTING
1
The mounting location of the power amplifier will have a large
effect both on its ability to dissipate the heat generated during
normal operation through the heat sink and on the possible triggering
of its internal overheat protection shut-off circuit . Any mounting po-
sition allowing for a good air stream across the cooling fins of the
amplifiers heatsink will improve cooling and long-term stability
dramatically.
Therefore select a suitable location that is convenient for mounting and
accessible for wiring and offers sufficient ventilation for cooling . As your
amplifier features no controls for normal operation, it may be mounted
away from the dashboard, i .e . under a car seat or in the trunk . However,
make sure the unit is not exposed to excessive dust, direct sunlight,
humidity, water, oil or other fluids that may enter the amplifier .
2
The amplifier should be mounted to a solid surface that will ensure
a vibration-free mount . Once the location is selected, use the unit
as a template for the marking of the mounting holes which should also
be pilot-drilled before mounting of the amp is carried out .
3
Secure the amplifier using the four screws . Avoid to let the am-
plifier get into contact with metal parts of the vehicle . This helps
to prevent unwanted ground loops .
A470-170 Manual DEF.indd 19
D
WIRING TIPS
Please note: wrong power or signal connections may damage the am-
plifier and other components connected to it . Therefore, please read
this manual carefully before the connection of any power, signal and
speaker leads is done .
The wire routing is critical for noise-free performance . For best results,
please follow the general wiring guidelines listed below (for details see
section B, E, F and G of this manual) .
1
For audio signal connections you should always use double or
triple shielded quality RCA cables .
2
Signal, speaker and power cables should always be kept as short
as possible:
™ Speaker and power cables may be cut to fit the actual length
required .
™ Shielded RCA/signal cables should never be cut and respliced,
as they will loose their protective shielding effect at those points
where they have been cut . If the signal cable is too long, make an
S-type loop (never a coil loop) in the centre of the cable to take-up
the excess length .
3
Never route any low level/signal cable near or parallel to speaker
outputs/speaker cables, amplifier power cables or high energy
ignition wires .
4
Use power cable with the recommended cross section (see
section E) . Small cross sections are reducing the output power,
are causing distortions and may be triggering the overheat protection
of the amplifier .
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12.09.2007 7:53:19
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