I never really understood how your asymmetrical "wing" loading of the open baffle line array mid-bass drivers works.
To me symmetry would be essential otherwise the short side would act as an acoustic bass short circuit.
The "path of least resistance" should determine the ultimate low frequency response.
I can envision the asymmetry redirecting a polar response peak lobe toward the long wing side.
But for the life of me I cannot figure how a single wing improved the measured frequency response.
It would be interesting to see some polar plots.
Be well soon. Shawn
Low ranges are omni directional, and the effect is the same regardless of the position of the driver.
And the effect in the lowest ranges are the same if the baffle is wide and flat or winged on one side or both sides. But there are negative effects to making a baffle big and wide. It adds surface reflections. So you gain some later arriving reflections that disrupt the on axis response. These reflections also really hurt imaging and sound stage depth.
Even adding material to absorb reflections is an improvement. We see this in ever review of products like this: http://www.stereomojo.com/Diffraction%20Be%20Gone%20Review/DIFFRACTIONBEGONEREVIEW.htm
Now, the Neo 10 is very sensitive to surface reflections. Even a slight reflection tends to disrupt the response above 1kHz.
So what if we put a wing down both sides and get the effect of a wider baffle down low and keep a small frontal area around the driver? Sounds like a good plan on paper right? But keep in mind how high the driver plans. The shorter wavelengths that propagate within the U shape that you made sets up a cavity resonance that really messes up the response.
Have a look at this design. http://www.audiocircle.com/index.php?topic=126112.msg1340323#msg1340323
The woofers response looked good with the little short side wing. They don't play up high enough for any cavity resonance issues. The tweeter however, is a whole difference story. Carrying the little short wing up around the tweeter caused a big problem in the tweeters response.
The one sided wing, implemented properly, works great.