having it be winter and me showing off my system in it's final days, I had to pull my HU out to keep it skipping (done this many times). Anyways, this time somehow all my speakers stopped working and all i have is bass coming from the subs. All the speakers are running off the HU's internal amplifier, which I thought may have fried by having the RCAs hit a ground or something, but there was no smoke or smell, so I don't think that is the issue. What other reasons could there be for not having my speakers work? Thanks.