I'm planning my first DIY speaker cabinet project. I chose an Eminence Legend CB15 driver, since it's suitable for bass guitar, the driver gets some respect around this forum, and I'm getting a pretty good deal on the purchase. I go to the Eminence web site, and I print their specs on a small, sealed cabinet. About 1.7 cu. ft. box. I plug the driver and cabinet specs into WinISD. WinISD gives me the "optimum" dimensions for the box. Those numbers are a bit funny. The optimum width is 15.52in. Well, allowing for the thickness of the plywood boards, an overall width of 15.5 would give me a baffle of 14.5. No way to mount a 15in speaker on a 14.5in baffle. So, I'm asking for advise on how to adjust the overall dimensions so the baffle will be wide enough. Is there a minimum amount of baffle space that I should plan around the outer edge of the driver?