I am Chris and need help deciding what to put in the back ceiling surrounds. I was thinking CDT-5800-CII or the PRO-180RPC. Another issue I have is the sound clarity seems off compared to my 1990's Reference 3 Series configuration. I am not sure what I am doing wrong but things just don't seem as clean. I used the marantz audyssey to set up the speakers. Any help would be great.
My room dimensions are 18 Feel Long and 15 feet wide.
Mains : Rp-8000 walnut
Sides: R-502
Center: RP-504C
Sub: SVS-SB-3000
Receiver: Marantz SR6013-9.2
