Quick question for all in the know: I am running a pair of Wharfedale 9.1 speakers powered by (usually) an NAD315BEE (40W/channel), and at the moment, an NAD355BEE (80w/channel) on a trial basis. I am noticing that regardless of which amp I use, I am getting quite a large amount of speaker travel (5 inch cone; I would estimate I'm getting 3/8'' of travel). Is this normal, or am I beating the living daylights out of the speakers and should I stop? I am not sure what to make of the whole situation. Thanks in advance!