Ok so Ive had an old 5 ch alpine amp for a while now and finally got around to adding some speakers behind the seats in the vents. So I installed them and connected them to the appropriate channels and Ive been getting horrible and annoying speaker static. At first you dont hear it but then as I drive it gets progressively worse, also I mostly hear it when Im giving the car gas since I do not hear it idleing at stops or in the driveway but if I give it any amount of gas you hear it but its only comming out of the rear speakers only.

-I am using the speaker wires that came with the speakers since they have the appropriate connectors for the speaker and have changed the speaker wire between that and the amp twice.
-Ive switched up a new RCA for the rear ch
-Also have all my speaker wires connected to the amp with Y spade connectors


Also side note for help, I hear alternator whine every now and I checked all grounds and they are good but it seems to be coming from my RCAs behind the radio because when it has some pressure on them it stops. Any idea why its a Kendwood radio (forgot model # but will edit in later since Im at work but one with bluetooth and pandora feature)

Thank you guys for your time

 

Are the HU and Amp grounded with the properly sized ground? My knee jerk reaction is a grounding issue. I would say that problem is the HU. Where did you ground each of them?

 

I have the amp grounded to the bolt in the spare tire area like it was done in one of the DIY sanded and cleaned... and the headunit I have it connected to the ground wire in wiring harness