SR, I did a little research... this gets really interesting....these are some quotes about these speakers from their sites...
atomic Apxx 18 - "Super Extreme SPL competition Woofer."
Fi Btl - "the exact sub you need to fuel your SPL fire."
Re audio Mt - "Designed for a single sonic goal: “To be the ultimate in SPL.""
so far these smell spl....
then...
Dc level 5 - "extreme amounts of output for the SPL lanes but reliable enough for a high-powered daily system."
treo ssx - "the most insane street bass woofer ever developed"
soundstream XXX- description seems similar to that of the dc audio level 5.
Kicker solo X- seems to be a very high powered daily.....
....
so i am wondering why people are using the spl subs for daily applications?....
and which would be the best for a high powered street bass system?....