To calculate the slot width, divide 54.5 sq. By the height of 14.5 in. The result is 3.76 inches. Round that figure to nearest ¼ inch, and you get an offset measurement of 3 ¾ inch wide. The slot port would be 3 ¾ inches wide by 14 ½ inches tall. You don’t have to get too hung up on the box and port volume. In case there are too many variables with height and width of a slot port to make a calculator, all you need to do is convert the round port to a slot or square port with the same surface area. For example, a 6 inch round port has a surface area of 28 square inches. Length of port or vent: Dv = diameter of port or vent: Dmin = minimum diameter of port or vent: Np = number of ports or vents: Vb = volume of box: fb or Fb = tuning frequency: k = end correction factor: Sd = surface area of subwoofer: Vd = driver displacement volume: Xmax =.

1. People don't call a round port a ' circular port ' anymore than they would call a slot port a ' rectangular port '. It's just easier to say ' round, square or slot '. And just because the walls of the enclosure are used to create a port doesn't make it any different as what it's still called.
2. The slot port consumes the smallest amount of useable space on the baffle board. It is also the most difficult to build and tune. A round vent mounted on the back side of the cab is much easier to build and tune. The first thing you have to know is how much port area is required for your specific driver.

Slot Port To Round Port Calculator Cubic

L Slot Port Box Calculator