Because of the odd size of the driver in my old Infinity sub, the dealer could not find me a perfect match for a foam surround. Consequently, I will have to cut a bigger one and overlap the foam surround. I have about a 3/4" overlap, and looks like it will glue flat nicely. Question is:

At the splice, do I just glue the flat over the cone and the flat over speaker frame, and leave the "hump" unglued? Or do I just glue the lap splice entirely?

If it helps, this is a sealed sub. I was concerned if I glued the lap entirely, I would create a stiff spot on the surround and cause the edge of the cone to get hung up. Am I worrying about nothing? Any advice would be appreciated.

Thanks!