I think what you need are the Auralex SubDude HD Isolation Riser (the HD means it's dressed up a bit for home use v. the regular SubDude). Widely used in homes and pro studios. These are foam type supports to use under subs (there are speaker and desk versions also). The things really work!
Kal Rubinson did a review in Stereophile in about 2005 or 2006, and it was basically a rave review. Absorbed vibrations, the house and bookshelves no longer vibrated, and the sound was improved considerably.
They're for sale on various sites (Audio Advisor, Music Direct), where you can also read numerous user reviews, which are something like 98% very positive, even raves. Cost is about $60 for the sub version.
Kal Rubinson did a review in Stereophile in about 2005 or 2006, and it was basically a rave review. Absorbed vibrations, the house and bookshelves no longer vibrated, and the sound was improved considerably.
They're for sale on various sites (Audio Advisor, Music Direct), where you can also read numerous user reviews, which are something like 98% very positive, even raves. Cost is about $60 for the sub version.