Audio Wiring / September 9, 2018 / Skyler Liang.
Once the different frequencies have been attenuated cut, from the signal fed into the amplifier, then the strengthened signal can be sent to more than one of the components in the audio system. For example, signals representing low-frequency sounds can route to the subwoofer. Signals representing high-frequency sounds can follow more than one path within the car speaker system. If the system contains tweeters, then the signals for the very highest frequencies will be sent to the tweeters. Signals for sounds that do not contain very high or very low frequencies will be sent to the car speakers.
Route the signal cables (RCA cables) on the driver’s side of the car from the head unit to the amplifier. Ground the amplifier to a clean metal surface on the car’s chassis. The ground should be no more than 18 inches from the speaker. The ground cable must be the same gauge size as the power cable used.
Route the power cable from the battery through the passenger side of the car to the amplifier in the trunk. It will prove most natural because the battery is commonly on the passenger’s side of the vehicle. You will have to feed the power cable through a rubber grommet on the firewall.
There are manuals sold for easy car amplifier installation. However, following some easy steps will ensure proper installation. First, is to fit a wire that goes from the car’s battery to the trunk where the amplifier will be placed. The cable will need to go from the passenger side, under the carpeting, and under the seats. The car’s instruction manual will show how to remove the seats to get the wire underneath. Once this wire is in place, the car amplifier can be connected. It is effortless but can take some time to run the wire through the car. Seat removal can take some time