Ipretiring, the last thing you want in a room is a perfectly omni directional loudspeaker. What you will get is omni directional room interaction. They are an interesting design. I know several people who would not give them a second look.
birdfan, An interesting, potentially great design (AlysVox) with one major failing and a potential worry. The major failing is that they are 79 inches tall and will revert to point source radiation at around 200 Hz. They needed to be 8 or nine feet tall depending on ceiling height to maintain Line Source characteristics all the way down. The worry is aluminum foil laminated to kapton or mylar is unfortunately fragile. The advantage over an ESL like a Sound Labs is that ribbons (or planar magnetics) are purely resistive and easy to drive. The ESL however is much more durable. There is no current flow so there is no heat and unlike aluminum it will not deform and crack. Magnepan uses this style of construction for it's tweeters only for a good reason.
birdfan, An interesting, potentially great design (AlysVox) with one major failing and a potential worry. The major failing is that they are 79 inches tall and will revert to point source radiation at around 200 Hz. They needed to be 8 or nine feet tall depending on ceiling height to maintain Line Source characteristics all the way down. The worry is aluminum foil laminated to kapton or mylar is unfortunately fragile. The advantage over an ESL like a Sound Labs is that ribbons (or planar magnetics) are purely resistive and easy to drive. The ESL however is much more durable. There is no current flow so there is no heat and unlike aluminum it will not deform and crack. Magnepan uses this style of construction for it's tweeters only for a good reason.