So I threw my old subs [2 10: Type S w/ MRD605 amp] into my car. I have them wired up with a line output converter, so I can retain the stock head unit. Now I know these are just mid grade Alpine, but I actually like them...they hit hard, and I can make a video of it tomorrow. But my problem is that when I power off the radio, I get MASSIVE feedback from my subs. They just vibrate making an approx. 60 hz tone...and its really loud. Let me remind you, my radio is off.
Now a little about my setup. 2007 eclipse. factory head unit, Schosche [yeah, cheap...and its the one from walmart] line output converter. LOC is connected to my 2 front speakers in the door. LOC is placed behind the factory HU. I have RCA running from LOC to my amp in the trunk. Sub/Amp all hooked up correctly, its all on a 4 ga wire kit. remote is wired to a fuse that is only on when key is on. So I know the problem is something to do with the way the LOC is connected. Now I do NOT have the ground on the LOC wired up, and I can't really tell you why. I mean....it works without it, and I never wired it up in my previous car either. I am just wondering if anyone knows FOR SURE that that is my problem. I dont want to pull it all out and do that if that wont fix it.
This is just a temp set up...later going to a 7" in dash with a Fi Q 12". But I still want to get my problem fixed. I will make a video tomorrow so maybe you can see what is going on incase no one responds tonight