port tuning

how are ports tuned and does the box size matter? i know it has to do with the port length and tube width, but i dont know the specific calculations.

box size does matter when you tune the port. the calculation is rather hard. much better to get a program like WinISD and just punch in the box size, the freq. you want, the size of the port, and it'll calculate the length for you. i'd personally go with a retangular port because you'll get less port noise and the ports don't have to be LONG.

coo thanks. do they make plastic rectangle ports or should i just make it out of mdf?

i want a box just like this, but the ebay guys charging too much. would that work properly like a port should... or is it just a nice idea?
http://www.hifisoundconnection.com/dualbox1.jpg

that would be perfect. here is a system that i help put together for him. the port should look like that.

http://www.sounddomain.com/id/zdimka

thats nice lookin. i wish i had the tools to make a box. i dont even have a damn circular saw.

Originally posted by strodda
thats nice lookin. i wish i had the tools to make a box. i dont even have a damn circular saw.

that sucks. use a jigsaw:D its gonna take forever if you do so. LOL