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[Rainelli 10+ year member]

Ok so when I turn my car on the speaker makes a low rumble sound and if I shut my trunk or hit a bump it hits hard if beat and sometimes doesn't stop. I figured my rca's but ran new ones im running out of ideas

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[THATpurpleKUSH 5,000+ posts]

bad ground

 

[Rainelli 10+ year member]

Could it possibly the amp? Because when I lightly tap the top if the amp it hic ups.

 

[Rainelli 10+ year member]

I have the ground running straight to my second battery

 

[Rainelli 10+ year member]

I tried 3 different grounds and still no change. Could it be the remote or the amp?

 

[Rainelli 10+ year member]

Any other suggestions

 

[winkychevelle 10+ year member]

try grounding the rcas or adding a noise filter that should git rid of the noise. but is not the true solution.

question 1 are your rcas run next to the power wire

suggestion 1 check your engine ground and double check your battery grounds

if neither of the two are the problem doing one of the first two suggestions should get ride of the noise

 

[Rainelli 10+ year member]

My engine ground and battery ground are. 5 ohms with 1/0 wire how do you ground the rca's

 

[winkychevelle 10+ year member]

just take a small wire from the outer jacket of the rca to a ground.

and thats alot of resistance for a ground my gronts read .000 ohm

 

[Rainelli 10+ year member]

Everything I read said 1 ohms or less. All my wires are 1/0 grounded straight to the chasis

 

[winkychevelle 10+ year member]

im not sure on the grounds its possible my dmm doesnt pick it up

 

[Rainelli 10+ year member]

Could it possibly due to my second batt? Or could it be the remote cuz I had to run a wire from the fuse box. Ir could it be the amp cuz when I tap the top if the amp it does the hic up thing. Im trying to solve the issue before I get my new amp.

 

[Rainelli 10+ year member]

I tried grounding the rca's still no change

 

[Rainelli 10+ year member]

Is their a way to test the rca's?

 

[Kangaroux 5,000+ posts]

Unplug the rca's switch your DMM to continuity (should make a beep noise when you touch the two leads together). Take each RCA cable and touch the male connector with one DMM lead and the shield with another lead. If it produces a beep noise then the RCA is busted (the shielding broke and now the ground and the positive components of the RCA's are touching).