NEW VERSION AVAILABLE see IsoAcoustics ISO-200Sub PATENTED ISOACOUSTICS ISOLATION: Tested at the National Research Council of Canada (NRC). The IsoAcoustics award winning design provides superior isolation performance. EXCITING THE SUPPORTING SURFACE: The isolators manage the energy of the speaker to reduce vibrations resonating through the supporting surface to eliminate dissonant sounds in the listening area or adjoining rooms REDUCES INTERNAL REFLECTIONS: IsoAcoustics isolator reduces internal reflections to eliminate smear. The result is an improved stereo image of natural spatial sound 7.8” (200mm) Wide x 10” (254mm) Depth. 5” (125mm) Height. 75lbs weight capacity. Package includes 1 Stand. IsoAcoustics ISO-L8R200 Sub OPEN BOX