Any idea on how far Klipsch RF-7II's need to be away from the walls?

it really doesn't say anything in the manual about the optimal distance. I looked through the Palladium series manual and Klipsch were very specific for that line that they needed to be a minimum 8 inches off the back wall and minimum 12 inches off of the side wall. So i'm not sure whether to go with that or if the recommendations would be much different for the Reference series.

any help would be appreciated

bumped for later