Jazzman's SLS Ripole Subs - Techtalk Speaker Building, Audio, Video Discussion Forum
26 Ripole speakers ideas | speaker design, open baffle, open baffle speakers
Duet15 Prelude
RiPol Subwoofer - RStAudio.de
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 "