Help: Engine Noise

[BoXtRoT_33]

I have a 95 r33 gtst that for some reason am now getting loud engine noise through the speakers.
Has anyone else had this problem before?
Is the an elimination process to determine what the problem is besides changing the speakers (already tested for that)?

Any help would be much appreciated, cheers.

[Cadmoon]

Power cables running near rca leads?

[Chris Rogers]

poor ground will do it as well. engine noise is a difference in grounds.

[BoXtRoT_33]

im not running any RCA cables just 6" in the doors and 6x9's on the rear parcel.

could the ground be the problem if was in the same pace as before the engine noise started?

[Chris Rogers]

so you do not have an amplifier any where in the system?

[BoXtRoT_33]

nope

[CarbonCarSystems]

If you are not running an amplifier I would say the head unit is faulty or depending on the speakers a capacitor on the speaker (if it has one) really depends.

[Frosty]

could be a bad earth of the back of the head unit...other thing you could do is use a noise suppressor but do some investigation first

[GirlTORQUE]

Had same issue. Recently had new sound system installed . Grounding etc checked & ok. Was told by installers a battery that's low will or can cause this problem too as affects filtering etc, As will an older head unit. Getting battery tested tomorrow whilst its having new bearings put in. If Battery is low, will charge or replace and see if it fixes problem ..

[BoXtRoT_33]

cheers for the advice il lcheck it out when i get time