SVS - SoundPath Subwoofer Isolation System (Set of 4) - Music Direct
Amazon.com: ALIENSX 4Pcs Soundpath Subwoofer Isolation System for SVS Subwoofers, Tighter and Cleaner Sounding Bass, Less Buzz/Rattle, Compatible with Nearly Every Subwoofer Brand and Model : Electronics
SVS SoundPath Subwoofer Isolation System 4-Pack | eBay