Robert Fulton founded the modern interconnect and speaker cable industry- before him there was no-one. Of course he was thought of as a snake oil salesman, but many of his claims are now borne out by the continued existence of the cable industry itself.
Just before he died, Bob had created a new speaker that used a concept he called the 'oval window'. It was some sort of modified Helmholtz resonator- Bob claimed that the oval window cut off one octave below the cutoff of the woofers in the speaker. Whatever you might believe about that, I can tell you that it did play some of the most effortless bass I have heard in a speaker.
Just before he died, Bob had created a new speaker that used a concept he called the 'oval window'. It was some sort of modified Helmholtz resonator- Bob claimed that the oval window cut off one octave below the cutoff of the woofers in the speaker. Whatever you might believe about that, I can tell you that it did play some of the most effortless bass I have heard in a speaker.