Two subs to an enclosure, how to calculate adequate slotted port size?

Two subs to an enclosure, how to calculate adequate slotted port size? slot port area calculator HOWEVER, i have been unable to find a calculator for tuning slot ports that are triangular in cross section port area as a 2 square port slot ollo4d You even might want to use more port area for high excursion drivers For slot port calculations, the best software i found is Boxsim

slot ollo4d Five-port desktop switch with one Gigabit Ethernet port and four SFP+ 10Gbps ports slots, integrated GPS and miniPCI-e slot Compare $ KNOT IoT

slot machine pendant You even might want to use more port area for high excursion drivers For slot port calculations, the best software i found is Boxsim  To calculate the port length of a slot port, enter the width and height of the port, the box volume in cubic feet, and the desired tuning frequency