Ultimate Open Baffle Gallery

And ugly *** sub... I have to make look better one day. Eminence Delta 15lfa. Closed box. Plate amp driven.

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My first try: a set of desktop open baffles. I think they sound quite fine near range (sitting in front of the computer). :) Further away they sound like crap.

Crossover is around 300 Hz, to the 8 inch woofer. I built it without the woofer before, but, well ... not enough bass without extreme equalizing and excursion of the full range driver.

The last step was to add two horizontal stabilizer bars. I noticed a steep and crass decline of the output level around 90 to 130 Hz, and strong vibrations of the baffle in the same range accordingly, so I figured ... The bars indeed improved the response in that frequency range!
 

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Interesting what you've done with the lower midrange, how did you hit upon that baffle shape? There are some simulations of a torus baffle in this thread Did Siegfried Linkwitz miss a trick?
The idea was to use separate baffles for each driver, so there is no many options left to be it compact and look good for low midrange. The size is dictated by crossover frequency on one end, and by max SPL on the other end.The driver stops working to just above first dipole peak. DSP takes care about linearity then.
crossovers 170/800/3000hz
 
My design from oak. Sounds better than looks:)

Looks great overall. Superbly designed W-frame and lower mid baffle.
Might look even better if the the two upper rectangular planar drivers were replaced with circular cones/ planars mounted in similar elegant flared toroidal baffles as the lower mid. Might not sound as good though? Did you try?
 
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