Port lengths

 

New member
Username: Bass321

Post Number: 4
Registered: May-04
If i have a box with two ports(PVC) hich are 4 inches in diameter and 20 inches long.. which is some where around 29Hz.. could i shorten the ports to make them around 35Hz?
 

Bronze Member
Username: Davidmeyer

Oshkosh, Wisconsin United State...

Post Number: 13
Registered: May-04
Why do you need to shorten them?
And if it is a must to shorten them i see no problem in doing so.
Go ahead and try it.
Not like you cant just make new ones if you mess up its only pvc.
 

Silver Member
Username: Soccer

Post Number: 115
Registered: Apr-04
Maybe someone could enlightned me about this issue: if I want to charge a box on the 30Hz band, what would be the diameter of the port and what would be the lenght the back wave would have to travel to the port? Or where can I get info on how to calculate this?
Thanks in advance!
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