Calculating Port displacment

[jacko 10+ year member]

I'm assuming that this calculator takes out the volume of air the port displaces when figuring out how long the ports should be, right? Or does that not matter? But then again I can't really know how much volume the port will take up if I don't know how long the port is... ? Oh wait, is this port displacement I mean? Sorry if I'm being excessively confusing: Heres the site: http://www.carstereo.com/help/Articles.cfm?id=31

Thx

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[Harrison486 10+ year member]

say you are aiming for a net 2 cf AFTER displacement

you put in 2 cf for size and the dimensions of your port and your desired tuning frequency

it gives you the needed length

you then find the displacement and add that to your desired 2 cf to find gross volume

 

[jacko 10+ year member]

okay thx lol