Audiophiles: Subwoofer help

[Jeff]

Ok, your first problem is running the amp down at 1ohm. Most amps are NOT stable down that low. Only the really high dollar ones can push a sub at 1. So, I figure that is you #1 problem. Your #2 problem is using 8ga for an amp over 300watts. I don't care what the package the wires came in or any of your friends told you...8ga is junk. Only use it in a multi amp system of for baby amps under 300w RMS (500ish peak). I am gonna assume the amp you have is 600 peak, which at 2 ohms should be about 350w RMS. That is good power to push one 10. You need to get heavier power and ground cables and rewire the speaker to a 2 ohm load. I'm thinking that will fix your problem.

EDIT- also check your RCAs. They are a common problem because most people buy a cheap set. Your Sony headunit is probably not the issue. They are junky, but there is no reason the head unit should be preventing the amp from outputting and high volume. It could be a bad output on a shitty sony...but I doubt it. If the sony has only a mono sub out and you are hooking it to a stereo input amp that could also be the problem. You need to use a y adapter and connect the two inputs together or you will get shitty low volume bass.