This port calculator was specifically designed for use with both Precision Ports from Parts Express and Big Ass Ports available from Amped up Car Audio.
Flared Port Calculator
What if I need a VERY long port?
No worries! You can get extra port extensions tubes plus couplers! These will let you extend your ports to any length you like! Just make sure you select the correct diameter. Check them out here:
This calculator is for a round port with two flared ends. If you need a slot port or you don’t want flares then use the Standard Calculator.
Ports can be complicated things. A lot goes into a well-designed ported enclosure. It might be worth it to save some time and purchase plans.