I am going to use a 1" dowel in each ported chamber, displacements have been calculated. I am going to run my current subs and amp until I save up for an upgrade.
Haha, I don't think they do either, but yeah, i plan on upgrading them eventually.
Not sure what you mean, elaborate please?
each subwoofer will have different resonant frequencies in sealed boxes depending on the size of the sealed box. for 4th orders you need to adjust the sealed portion so that your resonance lies somewhere within 45hz to 50hz then you test your cabin gain and vehicle transfer function with an spl meter and then tune the port to that peak for max performance.
I have not done that, is it extremely important?
if you want max performance yes. If you just want a 4th order that works then go ahead but projected sound quality and spl will be a crapshoot.
I have used WinISD and this is what i got. per speaker
I expected to be adjusting the ports, so I am using threaded inserts to be able to remove and replace the face. I am using the kickers because a ran across them for a deal: 2 kicker 12" in a prefab ported box for $85.
