Anyone using baffless speaker with a full range?

Getting bass from that type of system is a challenge. Basically, if you widen the baffle enough to get good bass, you impair the "airy" reflection from the wall behind the speaker, which is why you go open-baffle to begin with.

So, you'll have to do experiments in your room to get the "happy compromise".

I'm sure that there are some aspects of the sound that will be very satisfying in OB configuration. If you can reach an overall compromise that satisfies your listening tastes, you have succeeded.

I'd suggest making a simple baffle board, mounting the drivers, and adding temporary extensions to the baffle board in increments, to see how big you'll need it for the sound you want to achieve. Then you can make some permanent baffles. Using a slightly rearward-curved baffle can reduce edge-diffaction effects which could affect imaging. I'd expect you'll need at least a 3' square baffle surface to achieve decent bass response. Baffle-step losses will begin to occur at the frequency corresponding the 1/4 wavelength of the smallest cross-sectional dimension of your baffle. Distance from the wall behind will be important also, as in any bipolar speaker. Cancellation can occur if not properly placed.

Nelson Pass has a side web site called FirstWatt.com where he discusses his, design philosophies, DIY projects, experimental circuits, and speaker design. He wrote about an open baffle with a slot loaded base design you may find interesting. Here is the article which is a fascinating read: http://www.firstwatt.com/pdf/art_slob.pdf

Good luck on your project! 
- Steve

You might also take a look at the Alon (now Nola) line of speakers designed by Carl Marchisotto -  dipole hybrids, employing an open baffle design for mids/tweeter mounted on a large bass enclosure. I had the  Alon IVs for yeas and loved them - very open, airy un-boxy sound with good bass. Very tricky crossovers as I understand it.