SVS PB-4000 13.5" Ported Subwoofer with Bluetooth App Control (Open Box) | electronicsexpo.com
Review: SVS SB-4000 Subwoofer - HomeTheaterReview
SVS - Reviewer for @soundstagenetwork shows off a stack of sealed cabinet SVS subwoofers - SB-2000 Pro, SB-3000 and SB-4000, ready for compare and contrast. #svs #sb2000pro #sb3000 #sb4000 #subwoofer #hifi #hometheater #