dam! like my own little thread , but with out me! i use to use 4 spl audio w-12's with 4 kole 1920's in two pre-fabs. f150 extended cab, w/ kenetic 800 and big three done. i was fetching around 145's with it.........i like the big ol' motor look, and the fat surrond seems to make them look ever so promising also. they seemed to be awesome at the time.. then i also had 2 of the 15's w/ a couple of hifonics on them, uh bxi 2600 or whatever it was, custom slot port and big three done.........that was in a 2000 bravada....... also done really well. this was the old style.......seemed to get pretty warm , but we cruised alot. i think the new style bost more ...but are ugly as sin! so would i buy some more? sure ! cash deal off the streets or from aggressive flea market vender, i sure would. i would say a custom built enclosure is a must have. i would not want to use them for comp's or to repesent the low end in a musical enviroment, however they are cheap and can bang loud.......so like i said, if i stumbled across them ,sure. strange enough, the mach 5's ........ well that is what i am stepping up to, 2 mach 5 ixl's 15" s that is my goal..... i could get the spl's here locally , just go and pick them up for about 180 each. or have the ixl's mailed to me for 220 each. so i am saving and waiting....really want to have the better equipment ......also want to be able to see them low notes. trust me i am a sucker for the huge a** motor look, i use to say that the ma audio's w/ the 4000 watts stamped on the back was my next woofer.....big and cheap. mach 5 has those spl's too, but they are serious...!!!! i hate piss poor toilet paper, off brand Q-tips, generic mayo............the real thing seems to always win!