Posted by Wayne Parham [ 70.128.109.0 ] on December 13, 2008 at 14:00:24:

In Reply to: Interesting Delta 15A pro specs are similiar... posted by spkrman57 on December 13, 2008 at 13:33:50:

I'd probably put a woofer with specs like that in a cabinet from 2.5ft³ to 5.0³ tuned to 40Hz, just like the JBL 2226 or Omega 15. That is slightly overdamped, so it's good inside a room and also thermal shifts won't make it peaky down low.

If using it in a larger box like you're talking about, I'd probably shift the Helmholtz frequency down a smidge, say 35Hz to 38Hz.

All those values form kind of a continuum of alignments. Big box, from 6.0ft³ to 10.0³, the port should be somewhere between 35Hz and 38Hz, larger tuned lower. Smaller box, below 5.0ft³, tune to 40Hz.

Replies:

• Re: Vas=8.3, Fts=40, Qts=0.35 - spkrman57 19:09:27 12/13/08 (0)