Posted March 8, 200916 yr 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 helpTye
March 12, 200916 yr 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, 200916 yr by TRiPP3R
March 13, 200916 yr 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.
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