SVS 4000 Series Subwoofers Offer Significant Gains Over Discontinued Models | Audioholics
SVS SB-4000 (Black Ash) Powered subwoofer with app control at Crutchfield
SVS - End of year accolades are piling up! AVSforum reviewed dual SVS SB-4000 subwoofers with everything from children's movies to death metal and found validation for a “Top Choice 2018 Award"
SVS SB-4000 active,closed subwoofer test - Perfect Acoustic
Review: SVS SB-4000 Subwoofer - HomeTheaterReview
SVS SB-4000 Subwoofer Photo #2166593 - Canuck Audio Mart
New SVS SB-4000 delivered. Massive, clean bass. Went from cheap Pioneer Andrew Jones ported sub to the SVS latest and greatest sealed subwoofer. : r/hometheater