I have some questions. Right now I have a 12" alpine type r 4 ohm dvc and a TMA t500.1 amp hooked up to the stock HU with some rca's ran from the front speakers (no loc). I tried using an loc but I could never get it to work :shock:! So instead I ran the rca straight off the high lvl output from the stock radio. Now when ever I turn up the volume passed 18 or so my front speakers sound garbled . My theory is that the stock amp is seeing a weird resistance maybe 2 or 4 ohms instead of 8 which is what i think the stock speakers are wired to. I haven't had a chance to pull out a multimeter and check this yet. I guess my question is do I need to have an loc or is there an rca adapter I can buy, like at radio shack or something, that will let me run my wires this way?