I equalized the Seismic 110 to my listening room with the Perfect Bass Kit (PBK-1) 2.01 software and microphone today.
A real improvement in the bass frequencies and overall system balance the PBK-1 makes for the listening room.
PBK adjusts both the peaks and valleys in the bass frequency response in the listening room measuring from five or more positions in the room.
Now my system has better balance, improved transparency and sounds cleaner. Can now actually turn the subwoofer bass level up more without creating bloated bass.
The combination of the Paradigm S1 v.3 and Seismic 110 with PBK sounds like either i'm in a recording studio or on live recordings can create the illusion of a live performance!
Update: I replaced the Seismic 110 plastic feet with SVS Soundpath Subwoofer Isolation System (feet). A worthwhile upgrade!