I am trying to determine the optimal center-channel speaker placement for my set-up. I have read that the center channel is to be no greater than 6' from the 2 front channels. my options are: #1) center channel ontop of my entertainment center (about 7' high) with the 2 front channels on either side of the base of the TV (3' high) #2) center channel ontop of my TV (about 5'high) with the front speakers either on either side of the base of the TV (about 3' high). #3) center channel ontop of the TV and the front channels ontop of the entertainment center (about 7' high). My understanding is that you would want the center to be closest to the TV. Any suggestions on the placement of the speakers would be greatly appreciated.