Thanks Wayne! Hmm... I was also thinking that since these cabs would be installed in these spaces as I've described, (and therefore mostly obscured) I could try designing them so they have no parallel surfaces (why, I wouldn't even need to finish anything other than the baffle!) Am I brushing up against the "standing wave" problem you've mentioned? Obviously, given the space available, there is only so much I can do...
Please forgive me for being so clueless. My thinking was that I could construct a box of appropriate dimensions for the drivers chosen, proper length port, etc... but I understand that it's more complex.
Best regards,
Chris Leger