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

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port area correction Only difference between slot, circle, and aero ports is flaring for less noise at high velocity Upvote 1 Downvote

Port Size Step 6 – Checking Cone Excursion Step 7 – Check Group Delay Step 8 port area correction Only difference between slot, circle, and aero ports is flaring for less noise at high velocity Upvote 1 Downvote

raging rhino free slot machine I'm confused as to how to calculate the port displacement when it shares multiple walls port entrance, effectively increasing the port length Enter the number of ports, vent diameter, box volume, and tuning frequency into the calculator to determine the port length