Nice design with the side wing dimensions that look well chosen to prevent any short cancellation path front to rear. Smart.
Does the tweeter need so much baffle around it?
Does the tweeter need so much baffle around it?
I made a U baffle 12in wide with 8in deep wings and was able to get about 43Hz -3dB with 8x slot loaded 6.5in drivers. A lot of it depends on your driver Fs, Qts, and surface area. More info in this thread.
Here is raw response of the woofer.
I ended up crossing to 6FE100 mid at 500Hz and the mid to a planar tweeter at 4.5kHz. Your AMT would work well in a similar way. Here is my crossover:
Here is raw response of the woofer.