View Full Version : need help building a port

05-12-2003, 05:35 PM
ok i want a square port on my enclosure. it is for a 12" HC. The box dimensions go as the following...36w x 16.5h x 12d. This gives it a total volume of 3.145 cubic feet before displacement. The sub i believe displaces .17 cubic feet. So the total volume after displacement would be 2.975 cubic feet. I want the box tuned to 35hz. for anybody that has WinISD or any other box designing program...could you help me design the port??? I have never built a ported enclosure and would greatly appreciate any help.

05-12-2003, 06:28 PM
haha what would section of the forum be like without Jmac??? Also...im not even exactly sure how to go about building the port after you give me the sizes. Could i just do a slot port....so only one piece of wood will be needed for the port??? or do i need to do a complete square port where 4 pieces are needed? I may be wrong but im guessing if i do a slot..it has to be on one of the edges of the box...and a square port can be anywhere.

05-12-2003, 06:29 PM
Originally posted by Jmac
Never fear, Jmac is ***** ... I mean, Jmac is here ...


option #1, please?

-nate :D

05-12-2003, 07:20 PM
Sure u could use one or two boards for the port. Just as long as the distance between the two isn't like a quarter of an inch. If you give me the T/S stuff i could see about the tuning.

05-12-2003, 07:37 PM
Re 2.0 and 1.0 ohms per coil
Fs 29.0 Hz
Qms 7.28
Qes .29
Qts .28
Sd 480 cm^2
Vas 41.2 l
Bl 24.4
Xmax 21mm
1200 watts RMS