After seeing some boxes with kerfed ports i was wondering how that effects tuning. Say the last 2" of port is kerfed, and the design called for 10" of port, would that 2" be included and if so, wouldnt tuning be changed by the port widening?
someone had a thread on jdésigns.info about it a while back and there is a lenght to add on depending on how you do it. i think the O.P. was on CA thouh. check the stickies over there