I mean just use one Sonic Impact amp per channel(speaker). They have volume controls so no preamp needed. I'm thinking the seperate power supplies, etc. will make the presentation better, maybe not. Very simple to do, no crossover or pre neccessary. I'm sure many have done this. I just got back from Radio Shack and bought another 12 volt ps and two mini to rca connectors so I'll give it a whirl later today.

You have heard of the Clari-T amp. Check this one out.

http://www.michael.mardis.com/sonic/start.html

Pete