ok im really new at this kind of stuff, me and my roommate just bought a Panasonic PT-50LC13 50'' LCD Projection TV. and we are thinking of buying the Onkyo 7.1-Channel Surround Sound Receiver. i was wondering if there was like special 7.1 speakers for the receiver???? i meen there has to be a compatibility with the speakers and the receiver right? well can someone tell me if that is true or not and if it is can someoen tell me some good 7.1 speakers?