I'm skeptical that you can get <30Hz extension without a dedicated, powered subwoofer.
As to full-range floorstanders, in my limited experience I was very impressed with st_patguy's Odyssey Loreleis and with the Salk Songtowers.
Thanks Tom! I'm jealous you were able to hear some Salk speakers. I love the custom finishes available through Salk and really want to hear how they sound too.
John, I can't find my notes right now, but I have measured my Loreleis below 30Hz. For a two-way speaker with a 7 inch driver, they do bass with authority.
