alt whine in subs

[bigchevyboy 10+ year member]

since my big 3 upgrade I have noise in my subs. ground for my RFt30001 db has ot been bothered so ghats not it and the gain is not even halfway up so what could be my problem?

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[dyohn 10+ year member]

You had no noise before the big 3 and now you have noise afterwards? Then you changed something in the ground plane and made it worse. Did you measure the ground return resistance from the amp to the case of the alternator? Go back and make sure all your connections are clean to bare metal and tight, and measure your resistance.

 

[Pl8er 5,000+ posts]

I'm not exactly sure what you are saying about your ground. Perhaps try moving your ground? Also verify that you have not changed the location of your wires (rca, power, ground) too close to anything else. Sometimes just moving the wires a small amount can let them get interference from something else.