I just bought a QSC RMX1450 and I am using it with an Avatar B212 cab. I can't for the life of me figure out how to get it to work with the speakon cable. I have temporarily rigged it up using the binding posts with a 1/4 jack going to the cab. It works this way so I know the dip switches and stuff are set right (got the info from the QSC website). I searched the site and this forum and I know I need a four wire speakon and that it needs to be 1+ 2+. However I have no idea what that really means. I do have the 4 wire speakon so if any one can shed some light I would appreciate it. I'm sure it's something easy that is just not clicking for me. Paul BTW when I hook it up with the speakon instead of the binding posts the clip light just comes on and stays on.