Just a thought about the 5.1 and a SIX channel amp... to do this right, you need an amp that was meant for 5.1... Alpine has a new five channel amp coming out soon... 5 x 60w... and then you need a 1-2 channel amp for the sub depending on what your plans are. Six channel amps are meant to be front pair, rear pair and a pair of sub channels... I don't think you can properly do this from one of these amps as the sub channels are usually crossed-over for subwoofer use only. I don't think I'm wrong about that.
I personally plan to run 6.1 off of an Audigy 2zs Platinum sound board... I have an Alpine MRV-F540 (four channel) for my front mains and surround channels, an MRV-T320 (two channel) for my front and rear centers, and two MRV-M501's for my pair of 12" subs.
Good luck and TTYL!
Coach... I mean Randy (I often forget who I really am)
Undergoing LS1 Conversion as we speak!
Click Image to Visit My Website!