Do any of you have links to studies/ analyses that looked at how much average/ peak power is required for each speaker in a 5.1 or 7.1 system as a function of what type of sound is being played?

I have been looking and I haven't found anything. I suspect that I haven't yet looked hard enough.

I am curious about the "real" power requirements for surround speakers.

The Rat. M80s, VP-150, QS8s, SVS PC 20-39+, OPPO, Onkyo 703s, Harmony 880 Sony 60" SXRD HDTV