u/Old-Yak5330

I pinned someone while i was using the app a long time ago. i cant find anyway to unpin them now, any idea?

i have this 95 e36 i bought a while ago and have been fixing up, and recently got all 4 speakers working. Unfortunately my amp is dual channel so i have to wire the 4 in parallel. There has been this whine in the rear speakers for a while now and its driving me nuts. ill post links to the parts or images and what not but i just really want this whine to be gone for good.

Im not sure if its the speakers, the amp, the grounds, or the amp. Speakers are wires in parallel (front and rear positives are twisted and used per channel) and the amp itself grounds to the batterys negative. amp power is poditive termnal and ground loop isolator to sanded down chassis.

Ive already tried gemini and unfortunately while kind of helpful, just led to me running around for like 4 hours and i would love to fix this asap.

Rear speakers: Pioneer TS-A1670F

Front speakers: ATG Transcend ATG-TS502

Amp: Jensen XDA92RB

Headunit: cant find model number but "Hikity Single din non motorized screen" (the amazon listing changed)

edit: thought i should mention i did actually switch out the alternator at one point to a new bosche one. i have the old one still just in case but id hate the go thru that trouble of switching it out again. i have way more fun with wires.

Basically the title, i bought an 04 mustang off of a private seller and idk if its just me but the car is super loud. I wanna drive the thing i just paid for but would hate to get pulled over. My parents said they didnt hear me pull up in it but i figured you can never be too careful.