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2. MOUNTING OF THE AMPLIFIER
21
Before you attempt the installation of your R680A2 6-channel
amplifier, it is recommended to map out the complete audio
system and the respective wiring required. Please note that
- because of possible interference problems with the existing
car electrics and electronics - especially the routing of the
signal cables and the chassis ground connection will have a
profound impact on the performance of the overall system.
Secondly, the correct mounting location needs your attention
too (proper cooling of the amp!). Use only quality installation
material and if you have only little or no experience with complex
car audio installations, we strongly recommend you to consult
your nearest authorized RODEK dealer/installer.
2.1 MOUNTING LOCATION
The mounting location should be carefully selected, prefe-
rably in the trunk compartment of your car! In the interest of
passive driver and passenger safety, the amplifier must be
securely mounted, and special precautions must be taken
to allow sufficient cooling. The amp can get quite hot during
operation, so a clearance of at least 5cm from both sides and
from the top of the amp must be considered.
Furthermore, this amplifier features an internal fan, so the
side panels must not be covered to allow for a good air flow
in and out of the side-panel windows.
Make sure there is no wiring harness, fuel tank etc. behind
or below the mounting surface that may be damaged by the
drilling of the holes for the amplifier mounting screws. The
above mentioned clearance of at least 5cm to all sides of the
amplifier is not only for proper cooling, but also because the
crossover controls must remain accessible. The amplifier must
NOT be mounted directly to the chassis ground of the vehicle,
this may cause to ground loops with loud hum noise.
3. ELECTRICAL WIRING
IMPORTANT! Disconnect the positive battery terminal
(+12V) or remove the main fuse near the car battery
before you start any wiring work!
The power supply of the car audio system must be dis-
connected until the entire wiring installation is com-
pleted.
The recommended minimum power cable cross-section
of the main power supply cable is 20mm², but if you drive
the amp hard a 35mm² power cable is preferrable.
Using main power cables with smaller cross sections
potentially result in unnecessary over-heating of the
amplifier circuitry, distortion at high volume levels
and may also cause the thermal protection circuitry to
shut-off the amplifier.
Use rubber grommets when running cables through any me-
tal or sharp plastic panels, to prevent accidental shorting or
shearing. Make sure the cables do not interfere with normal
operation of the vehicle.
Especially the music signal cables (RCA interconnects) should
be kept far away from any potential sources of electrical inter-
ference e.g. electronic vehicle management systems (engine
computers, relays etc.) fuel pumps, wiring harnesses etc.!
R680A2 Manual_E+D.indd 21R680A2 Manual_E+D.indd 21 07.07.2004 12:36:45 Uhr07.07.2004 12:36:45 Uhr
21


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