Richard Sequerra (of tuner fame) built and sold a triangular-shaped floor-stander called the Pyramid Metronome 1 back in '79 - 81. Later he produced and sold a small 2-way monitor called the Metronome 2. I saw the Met 1 at Innovative Audio in Brooklyn, NY. Looked very impressive! Alas, I didn't listen to it (I was there buying a Bedini 25/25 amp). The Met 1 got a favorable review from The Audio Critic (look it up) but several flaws in the design were noted. I would buy a pair if the price was about $1K and in good working condition.