Can Some one calculate tunings of this with one Nightshade 18?

[mytyeerinpie 0]

With one port blocked and 2 ports blocked also just for curiosity. It was supposed to be for the Orion H2 15's so it would've been 43hz, 35hz and 30hz I believe but thats obsolete now anyway. So I need to know if I'll even need/want to block anyports because It'll be SOOOO big for the 18 anyhoo I think 7 cubes and some change. I added a little more bracing than is in the design but it shouldn't be enough to change the tuning significantly.

Thanks for the help

Tye

[mytyeerinpie 0]

no one?

[tripslipfall 0]

2 ports blocked should be around 23-24hz.

1 port blocked should be around 34-35hz.

No ports blocked should be around 43-44hz.

Edited March 12, 2009 by TRiPP3R

[KU40 173]

The tunings won't change just because you have a different sub, the box doesn't care what sub is in there. The net volume will change a tad because of the different displacements of the sub and that'll affect the tuning, but it will be negligible.