Quote Originally Posted by VolvoHeretic View Post
Sri, the boards are angled 30 deg. from one to the next, so the miter angle for each board edge is half of that or 15 deg.

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VolvoHertic, Thank you, I will try out today. I will start with the same angle for the parallel boards (6-1/2") ends as well. Also, one thing to note for the cabinet diagram based on GM

"don't forget that the 811 ideally needs to be set back in a recess along with its foam inserts same as the M19's to use its XO, which I didn't see shown"

the M-19 front of the horn has foam around two sides for about ~6-3/8" wide each and ~2" depth (not exact measurement) I couldn't attach the M-19 cabinet plan (it exceeds my current limit). I wonder whether that is something can be considered.

Thank you,
Sri