Ground Noise

Dear Forum,

I am new; in fact this is my first post. I have a Porsche 911 and the car battery is located in the front trunk area. I mounted my amps and x-over in this area. I connected the 4 gauge ground wire (which leads to my ground distribution block) to the negative battery terminal. The battery is grounded to the chases by a thick steel braided line, which spans 10 inches to the inner fender and is anchored by a17 millimeter bolt.

I am getting engine noise. Is the noise a product of connecting the ground to the negative battery terminal? Any help would be great!

--Drew

With the amps' ground going directly to battery, it doesn't matter how the battery is grounded to chassis.  But it will matter if you disconnect that amp ground and make a new ground wire directly to chassis.  Ground to the same sheet metal the battery is grounded to.  (Take out power wire fuses before disconnecting ground.)  It wouldn't hurt to try a new grounding spot, anyway.  But if that doesn't stop the noise, then there are other methods of introducing engine noise into the signal path....none of which you want, of course.  Like RCA signal wires running parallel with a power wire, different ground planes in the head unit passing to the amp via the RCA cables, amp grounded by screws to the chassis.....

But do one thing at a time and make notes of results until you get to the solution.  There are a lot of smart people answering on this forum.

Since you're new on the forum, you may have not yet noticed the "ground" forums stickied at the top of the page.  Look at them, too.