Hi, so this question has kind of been bothering me lately in regards to audio receivers, Say a 5.1 receiver is rated at 50 watts per channel, and you have 5 speakers hooked up. Does the receiver know how much power to send each speaker? For example, say my center channel is only rated at 10 watts, is the receiver sending only 10 watts, or is it sending 50 watts to those speakers? If it is, it kind of seems like a waste of power. Thanks