The Decware  ZROB is an interesting design that I have been planning on making a DIY version for about a year now.  I am curious how an OB design sounds and the omni flip design peaked my curiosity.  Well I just lucked into a new unused pair of Lii Song Fast F-15’s for $250 + $40 shipping.  I used scrap particle board etc. at no cost to make a prototype to see if it warrants making one of solid wood. With only 10 hours of use these speakers have some incredible potential.  The detail, clarity, highs and upper mids, 3D huge room filling soundstage excel.  Bass and lower mids are definitely lacking but the speakers are improving as they break in.  I do feel with the size of my baffles  that a sub is required,which I  have, and was expected. Size of my baffles are 24x18”, they have a 10 degree tilt on standard set up with an adjustable tilt of 38 to 42 degrees on the flipped Omni set up. The 42 degree Omni is currently preferred in my HT room using a Taboo amp with Zrock 3.  It’s been a fun project for minimal cost  to satisfy my curiosity.

Tom, nice work on the ZROBs. Your material costs were minimal, and the prototypes look fantastic. It sounds like you have plans to replace the particle board at some point, any idea what kind of wood you might use for a final design? The bottom line is that you like what you've got now, and that's exciting.

Good workmanship and creative.