This was a build at my old house, decided to go all out before I moved out lol. System consisted of one audiopipe apsm wired @1ohm on the xcon, powered by a couple wet cells and a battery charger. Mids and highs were ran off and Rockford Fosgate 500.2 on some yamaha bookshelf speakers @8ohms. Soundstream 7 band EQ was my main line driver/signal processing unit. Played all the way down to 9hz with authority, but didn't play much above 48hz, not that I'm complaining. I'm going to be doing a rebuild for it fairly soon at my new place, with more power. Going to have strapped APSMs on the xcon, and some new batteries for some powah.