i have a design but goin wit Kerfed port, how much more length?

[Hoppinlowrider 10+ year member]

So i have this design i copied from a thread around here, props to whoever made it, but i wanted to go wit a kerfed port, building it tomorrow.

Already cut the front baffle/port, I went with 10 cuts 1/2" apart.

But how much length should I add to the port so the tuning stays roughly the same?

design:

BTW thanks to whoever is kind enuf to help out

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[Hoppinlowrider 10+ year member]

bump need help

 

[Pioneer~Saturn 5,000+ posts]

It wouldnt make a big difference but adding about 2-3 inches will make up for it, but will also mess with your airspace ontop of the kerf doing so...so I would go with 3 inches added on

 

[mbrooky 10+ year member]

draw it out on the base board then take a long piece of string or speaker wire and lay it down on the drawing then measure the string or whatever with your tape measure.//content.invisioncic.com/y282845/emoticons/biggrin.gif.d71a5d36fcbab170f2364c9f2e3946cb.gif

or just draw your 32.75 line over then 10 back, take the tape measure starting at the right, turn it sideways, pull tape down then bend the tape measure at the port to meet with the 10 inch line you drew and bring it all the way down and see what you get

 

[Hoppinlowrider 10+ year member]

thanks, very much appreciated