Subwoofers Add drama to the action scenes in a movie and makes music come alive THX Subwoofers Viewing 1 to 1 (1 Total) 642e SB THX Select Short Description THX Select-certified performance in a beautiful subwoofer! Box Subwoofers Viewing 1 to 2 (2 Total) 224/444 SB Short Description A perfect melding of super high power and modest size! Unexpected power and style! SB-900/900DF Short Description Rock-solid bass from our smallest sub! In-Wall Subwoofers Viewing 1 to 2 (2 Total) IW-28 SUB/SA-180 Short Description The ideal solution for retro-fit bass! IWTS-8e Sub Short Description THX Ultra-certified bone-crushing bass--totally invisible!