I was just wondering if there are a lot of amplifiers that are 1 ohm stable or not. Also I was wondering if I do order a 18" or 15" SX from the group buy should I get it dual 2 or dual 4? Which would be more useful? I'm thinking as it stands Dual 4 because I've seen quite a few amps that were 2 ohm stable. Also what is the minimum power that should probably be put through a SX for it to be... Audible... lol I don't know how strong my electrical system is so I probably won't be able to put a full 1000w through it.