SVS SoundPath Subwoofer Isolation System, 4-Pack

Affordable and discreet alternative to platforms and risers.
Works with any brand subwoofer that accepts screw-in feet. If no threaded inserts are present, double-sided tape or non-abrasive adhesive pads can be used.
Fewer complaints from house occupants and neighbors in apartments and townhouses.
Cleaner and tighter sounding bass with less floor boom and vibration.
Less buzz/rattle from objects in the room.