I've just completed test baffles my latest OB. As with my last few, it uses a very simple Perspex (acrylic) baffle.
This time it is designed to be wall-mounted to the side of a nib wall on a hinge that allows it to fold flattish.
The drivers are the newish Seas Excel C18en001 coaxial and (for the test) a Dayton RS225.
Crossovers are passive at 2.6k for the coax and active at 350Hz for the woofer. I use a MiniDSP to EQ the bottom of the coax and the woofer, and to tweak overall response.
The speakers don't get played loud as this is a living room and cross to a servo sub below 90Hz.
The choice of the Seas coax was due to speakers being mounted both higher and wider than is ideal. So vertical and horizontal dispersion were key goals.
I've not tried a coax before, but it certainly works as advertised.

