I did a great deal of research regarding my recent purchase of Magnepan 1.7 speakers. While the magazines seem to reign in the required power for this Model, I've read some outragous statements regarding just how much power is required to happily drive these speakers in many a blog.
I'd like to let potential purchasers of the 1.7's know that I have chosen to mate mine with an NAD 356 BEE integrated amplifier and find that 80 watts is more than necessary to drive a medium sized room (with hard wood floors). In fact, I come no where near stressing this amp and have seen no idications of clipping, even when letting things fly on Beethoven's 9th - 4th movement.
I hope this helps those that have set their sights set on the 1.7's but were less than confident about how many watts it would take to happily drive them.