I have not, but then again I am only starting down the open baffle road. These speakers seem to be in line with the Linkwitz Orion and the open Supper V that Danny Ritchie at GR Research built in some ways. Throw in that Emerald Physics is one of the more recognizable offerings that employed a wave guide in an open baffle arrangement. Of course the devils is in the details, and glory is attained in the execution of the design. I would love to hear a pair and see what is possible. At the moment my interest in open baffle is concentrated on high efficiency designs as I use low powered amplifiers. The Electra Print 300B Custom is 8 wpc, and the N.E.W. DCA 33 I have is 33 wpc. So I need speakers that can be miserly with their power requirements.
Regards
Mister Pig