Hy my main system is just two channel , four way , and kinda vintage , pre amp dynaco pass 3 x -re stored with original boards and still with telefunken tubes , and lots of other upgrades around it , hours of hard work in the pre amp ----next the signal runs into a sony td-888 electronic crossover unit , a mcintosh EQ 104 { just sub base line runs threw this }---amps are a pair of mcintosh mc 30s -a maggie 8802 , a sylvania console tube amp , a denon solid state poa 2400 amp runs the sub base --speakers are all JBL pro type , mid range and tweeters horns , cross over points are 225k , 500 hz , 8 k ---lower mids are jbl 2012h , mid horns are 2445 , tweeters are 2404h , 15 inch woofers are jbl 16ohm ----other tid bits are , cd place is rotel 9658x , a custom made D A C using a tda 1541 decode chip , plug in op amps are currently ne5532 , there is a denon three head cassette deck , a denon internet / fm radio player , and a karaoke system that can be inputted ( several components involved here } -----there are all so two speaker switches , so the tweeters can be switched to over head marantz ring diaphragm tweeters in small boxes ,,mostly used just for the karaoke ,, can run one set or both the jbls and the marantz at same time ---same type of switch box for mid range horns , can run two at a time or all four , here all four are JBL