Home › Owner Reviews › Miguel S. Reviews the PB-4000 Miguel S. Reviews the PB-4000 Posted by Ryan Alfredo on August 02, 2019 "I never experience a subwoofer like pb 4000. WOW I’m blown away I’m very satisfied."- Miguel S. 4000-series, 4000-series-dual-subwoofers, all-products, all-subwoofers, dual-subwoofers, dual-subwoofers-ported, pb-4000, ported-subwoofers icons/instagram Created with Sketch. Share Share on Facebook Tweet Tweet on Twitter icons/pinterest Created with Sketch. Pin it Pin on Pinterest