20yo topic being revisited! Didnt even remember posting it until after searching for RF-7 foam insert.
Try to keep this short, but I'm in a state of shock. When I made the original post, there weren't many RF-7 inquiries to the community being recently introduced. My pair are early manufacture with Monster Cable Z-Series® wiring & Cherry wood cabinets. Serial #'s 119/122.
Since 2002, there's been many posts asking the same question about placement of the interior acoustic foam. One has a Klipsch engineer replying with the correct factory placement. Mine were 180 degrees offset, so only the 2 sides of the lower cabinet & bottom were covered. I just now repositioned the foam to factory spec. And Im blown away by the result! The sad part is 2 decades of not hearing my speakers perform to their potential.
The exact moment realizing this was listening to Cheryl Crow's self titled album, the track Everyday Is A Winding Road. Having played this dozens of times before, I was speechless at the new sound coming from my beloved Klipsch. The imaging and soundstaging were so defined that upon closing my eyes, I could accurately hear where each musician was standing (Tchad Blake engineer of mixing). Previous listening sessions had lacked that attention to detail.
My system is elderly, NAD C216THX 125w & C160pre, NAD CD545BEE, and 10' set of locally manufactured JPSLabs UltraConductor Bi-Wire cables. Recently added Klipsch Reference R-120SW sub that I'm still experimenting with placement and isolation.
I'll wrap this up by saying its amazing how much difference the foam placement effects the sound, that it almost seems like I got a new set of speakers.