I think these are just Eminence Alpha clones... close in specs and look, now that Eminence owns Fane I guess it's just a copy. Anyway, I used two in a 2x8" bass cab (vented) and it wasn't bad. Not very nice sounding, though... if you want a miracle from an 8" woofer you have to spend some serious money on a Faital PR or something like that. I owned SWR Henry 8x8 and 4x8" so I'm a fan of small speakers but for the Q/P ratio, 10" woofers can be beaten (at least for bass).
They're bright enough, though, so maybe they'd be nice as midrange for 2 ways cabs on top of a good 15".