Engine noise coming from speakers Options

[k-weaver]

Ok guys, this is an interesting one...

First off, the noise only comes from my speakers in the doors and in the back panals, not the sub. Probably becuase the freq is too high.

Anyway, I am currently running a performance teknique amp. It is a 4 ch amp and at the moment I do not have the model number. I am running Kicker 6 1/2 in the rear, alpine 6 1/2 in the front and also two kenwood 6x9 in the back (placed into the rear panal that covers the trunk). The two fronts are wired to the front channel of the amp and the rears are wired together on the rear channel of the amp (should be at 2 ohms).

I have tried a "ground loop isolatar", this does not help at all. The actual noise is faint, and can only be heard when the volume is at a low level. When the music is turned up, the noise can no longer be heard (it is still there though). my HU is a kenwood excelon, again, not sure on the model but it does have 5v preamp with the internal amp turned off. i have my RCA's and my power wire running on seperate sides of the car, so this is not it.

One last thing...I recently found out that the engine noise only happens when my lights are turned on (headlights). when they are not, the sound is not there at all. Anybody have any idea what is causing this to happen and how to get rid of it?

[Hanyo]

you have a bad ground.

when you turn the headlights are on, the electricity goes from your light bulbs go through your raditor support to the battery. In your case, since your ground is not strong enough, the electricity takes a longer route such as your sound system. This will make static/interference when your car is running.

just add a thick ground wire from your negative terminal to other parts of your car.

alot of people have this problem because they add a BIG thick red power wire to the amp but they dont add a big thick ground wire to return the power, or the location where they add the ground wire does not have a clean contact point.