Hi,

I'm building a pair of Altec 620 cabinets for a pair of GPA 604-8H coaxials.
I'm making the front baffle from 2 thicknesses of 3/4 inch MDF, so 1&1/2 inch thick.

I'll be using the same slot port as the standard 620 cabinet, but I'm wondering if I need to alter the dimension to account for the extra baffle thickness?

Cheers.