For fun, I compared the Omega18 against the Selenium 18SW1P
18" subwoofer. Both PiAlign and BoxPlot give a ~3.3 cu. ft. box
for the Omega, which seems pretty small for an 18"er. The
Selenium has similar specs except for Qms. The difference is
between 5.53 for the Omega and 10.93 for the Selenuim. Vas is
12.5 vs. 13.3. The freq. plot for the two show the Omega -3dB
around 58Hz, and the Selenium around 36. Does the difference
in the specs make that much difference? Aside from the obvious
answer, why?
BTW, the BoxPlot box for the Selenium is 7.75cu ft. With a similar
sized box for the Omega, you get a sort-of ESB alignment, with a
similar -3dB point. Any thoughts? Anyone tried this Selenium?

Thx, Chris