alternator whine

I apologize, but I am once again asking for assistance on this issue. I think I have tried everything I've been told. System Rundown: 2002 Saturn L200 •Electrical is a powder coated mechman 260 amp alternator, battery is a XS Power D3400. I have 0 gauge ofc big 3 •Stereo is a JVC KW-M780BT •...

Hello, so I have had an amplified system running in my car for around a year now with no issues. All the wiring is fine and all the grounds are firmly secured to the chasis. however a few weeks ago i started my car and noticed a whine coming through the speakers that changes with engine rpm...

when my key is turned to on ACC or whatever it is (engine not running but key is on) there is an annoying buzz in all my speakers and my driver side speaker gets little to no actual music, and when car is on theres a high pitched whine along with that buzz that matches the trucks rpm, and i can...