A port does not "direct" air flow. Porting tunes the cabs internal volume (size) to a speakers requirements. In the old days of full and 3/4 bass reflex there was just a cutout in the soundboard. Extending the cutout behind the soundboard is porting and allows smaller cabinet size (with trade offs). It is all about loading a specific speaker to the air outside the cabinet at what frequency.
Just call me B-String 2
GK Club #488 Big Cabs #175 Peavey Amps #92 50+ Club #44
Originally Posted by beans-on-toast
I told my manager that I wanted a regular gig. She told me to try prune juice.