For me, copying the 4430 cabinet is probably the way to go.

Otherwise, I shall have to choose between, now, five different recommendations for box volume and port tuning--all from knowledgeable people (Wayne and Adrian among them), and all, as your comments show, very suitable for the drivers.

One related thing I've been wondering about is achieving a smaller footprint by making the cabinet taller, but narrower and shallower, for example changing a 31" H x 24" W x 23" D cabinet (approx. dimensions of the JBL 4333A) to, say, 36" x 20" x 21". Does one need to worry about skewing proportions?

For some reason my computer is using QuickTime to read PDFs, and is only reproducing the first page of each, so I'll probably have to wait until Monday at the office to see what information JBL gives about the 4430.

Thanks again, guys!

Regards,

Joel.