Wakanda, poseydon
I'd really, really, really be afraid of using the KAPPA PRO-10A in a WO32, or any sub for that matter. The spec says "Usable Frequency Range 102Hz-2kHz ". Unless this is a misprint, it means that the KAPPA PRO-10A is not a sub or even a woofer but more of a pro audio mid woofer or even a midrange...bad choice for a WO32.
I like the specs on Steve's DHM108B (although there are a couple misprints there...xmax...0.39" is 9.9 mm and 5.5 mm is .22" don't know which is right, but I'd guess 5.5 mm, .22". Also Qts is wrong...should be Qes * Qms / Qes + Qms = 0.32 not 0.618). The specs on Steve's DHMPRO look even better. Also, don't forget to look at the 10" Series II from Parts Express
http://www.parts-express.com/pe/showdetl.cfm?Partnumber=295-110Dan