SVS on Twitter: "Jr. basshead going "Super Saiyan" after experiencing force of dual PB-4000 subwoofers. #svs #pb4000 #subwoofer #bass #soundrevolution https://t.co/4I5VX83FDf" / Twitter
SVS PB-3000 VS PB-4000 | Who Wins?!? - YouTube
SVS - UK site AVForums brought an SVS PB-4000 subwoofer in... | Facebook
SVS PB-4000 Subwoofer Review | AVForums
SVS PB-4000 Subwoofer Active Ported 13.5" 4000 Watts Sub Gloss Black Ash | eBay
SVS on Twitter: "Biggest SVS event ever at @nfmtweets tonight! Getting the dual PB-4000 subwoofer & Prime Speaker system warmed up. https://t.co/141vOAVJIF" / Twitter