Used DBX 3 way electronic X over since 2001, various pre and power amps, two years ago Behringer x over, clearer sound, I guess better operational amps, now 3 Behringer A800 power amps, and a Crown xls 1002 for subwoofer. DIY loudspeakers made in 2001, still very good. Never been rich, this cheapo stuff, does amazingly good, 2 Seas alu 8 inch woofers in a super massed enclosure, braced, cement ballasted chambers, mid highs module, seas mid, now a compression horned celestion tweeters, big treated room so I have to project sound.