i have a 515 woofer and 806 driver with 811 horn using dynaco mk 3 mono amps and am currently using half of a jbl stereo crossover 5234 . i did have a heatkit xo-1 that sounded better but it died on me and went to the jbl crossover.any ideas what direction i could go in with trying to upgrade my crossover, i know the heathkit sounded better. but, they are hard to come by and aren't really well made . i am trying to read opinions on ashly, rane, and behringer.any help would be appreciated. thanks in advance , pete