I have a pioneer DEH series HU with the rcas grounded and the HU grounded to the frame (removed some noise). I still get a horribly high pitched rpm based whine coming through.
My sub doesnt have the whine (maybe because of low pass filter idk). Its a diamond 400.1
My mids are the culprits and im starting to think its the amp. I have A/D/S/ AL5 mids and tweets running off of a rockford fosgate 400.4 amp. The amp puts out 50rms to each speaker at 4 ohms (which are rated for 100rms a piece and are 4 ohms).
Speakers were wired to a Alpine 3357s and it was having no alternator whine issues. I swaped it out for the rockford mearly as an attempt to get more power through them.
-Ive grounded rca
-Grounded HU
-Made both amps ground through the same bolt
-RCAs ran down middle of car power wires on drivers side
-wtf
AND also another annoying problem, speakers seem to lose power.
I have them wired up mono right now so they are both down to 2ohms and the amp is rated at 200rms at 2 ohm bridged. When i turn it up they get pretty **** loud and are very clear, but shortly after turning the volume up (about 45 out of 60 on volume) they seem to drown out and become less clear and are noticeably quieter. Im starting to get very confused why all this is happening...
Rockford fosgate 400.4 --- 2x200 at 2ohm, 4x50 at 4ohm
A/D/S/ al5s ----- 100rms 4ohm
