Can someone explain 2 free air subs facing one another? : r/audiophile
Need help with dipole subwoofer design - Techtalk Speaker Building, Audio, Video Discussion Forum
RiPole Subwoofer
Bad news for Ripole sub builders :-( | Page 2 | diyAudio
Welche Tieftöner für Ripol? - Verstärker, Lautsprecher, Zubehör - Analogue Audio Association
Stereo Magazine - Directional subwoofer Conventional loudspeakers usually radiate low frequencies spherically, i.e. in all directions. ModalAkustik now produces a subwoofer that radiates the bass specifically to the front. It is called "