I'm thinking of building a pair of Paul K's Cantilenas. Paul's original design looks like this:

I'd like to make them as a rectangular box. But if I do, I'm not sure how to modify the baffle. As you can (maybe) see from the image, the face of the speaker is 9 7/8" wide, but it has 3/4" red oak side panels on either side, making the full width of the speaker 11 3/8". But these side panels are recessed a bit and don't extend all the way to the front.
Given that the face is 9 7/8" wide, but the full width (including recessed side panels) is 11 3/8" wide, which is the "right" width to use to keep the speaker behavior the same? What would be the difference between building this speaker at 9 7/8" wide vs. 11 3/8"?
Thanks!

I'd like to make them as a rectangular box. But if I do, I'm not sure how to modify the baffle. As you can (maybe) see from the image, the face of the speaker is 9 7/8" wide, but it has 3/4" red oak side panels on either side, making the full width of the speaker 11 3/8". But these side panels are recessed a bit and don't extend all the way to the front.
Given that the face is 9 7/8" wide, but the full width (including recessed side panels) is 11 3/8" wide, which is the "right" width to use to keep the speaker behavior the same? What would be the difference between building this speaker at 9 7/8" wide vs. 11 3/8"?
Thanks!
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