First of all.... Congrats! B&Ws are great! I'm running a pair of Matrix 802s (as well as some crappy non-B&W dipole rears) off of a Carver AV-505 (using a 3 year old Yamaha RX-800 or something like that--100x5--as a preamp). The Carver is an 80x5 amplifier, which may seem low, but it actually...