Alpine 3342 - Installation Method for Shielding Car Noise; Equipment Placement; Wiring Separation

@ Installation Method for the Shielding of Car Noise
Introduction
Measures against car noise are very important for delivering the best perform-
ance from your audio system. In view of this, this product should be installed properly
to suppress the effects of car noise.
Here we present a basic installation method for suppressing car noise.
Keeps the equipment away from the car harness. (Fig. A)
The car harness which is wired throughout the car might be exposed to the
entrance of noise from the various electrical parts in the car.
A basic audio installation practice is to install the main component away
from the car harness and wire it at that location.
Chassis
>
\ A 10-20 cm
Z a
OX
f i S RCA Cable
Car Harness by y
2»
Fig. A
Do not have the power system and the signal system close together. (Fig. B)
When making a new audio wiring installation, a basic practice is to do the
wiring as far away from the battery power cable as possible.
If wired together, the noise will enter the RCA cable from the battery power
supply.
Audio Battery Cable (Power Supply)
RCA
Cable
(Signal)
Amplifier
Fig.
B
Battery