Posted July 22, 201213 yr I am doing (2) Sundown Sa 8v2's on a Cresendo B2000. The box is going to be a little over 1 Cubic foot and am looking to do an aero port. I want the tuning to be around 30-33hz and need to know how i would calculate the dimensions for the port. PLEASE HELP!!!!!!!!!!
July 23, 201213 yr Author Thanks for the response. In regards to the psp port calculator, the length given; is that the length of the port in inches, or what?
July 23, 201213 yr Using a 6" port the box will be smaller than the volume the port will take up. In situations like that a slot port is a better choice...that or picking a driver that requires a larger box since you'll be using the space anyways.
July 23, 201213 yr external Pretty much has to be, but it is still not the best idea IMO to have a box that is more port than box (including the external as part of the term "box")
July 23, 201213 yr ^^Yes. Hemolitz resonation requires the volume of the enclosure and vent to be within certain parameters to work right. For instance a 1/2 cubic foot box attached to an 8" sonotube for a port will act more like a transmission line than a port. Conversley, if the port is too small you will get an aperiodic effect.Both of these are bad things..
July 25, 201213 yr The last box i made and sold was a 1.44 cube box for two sa8 v1.5's and ported it with a single 4" aero using the full 17" length and tuned it to 34. Sounded a lot better than the previous slot port boxes I had made for sa8's. Even with the port being a little on the small side it had NO port noise and sounded pretty damn good on 1000w.
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.