Hi all, I need to make a Speakon cable to connect a Marshall MB450H head to a MBC810 cabinet. I'm wondering if anyone knows for sure that this non-biamped arrangement would use only the 1+/1- terminals. (I don't, at present have access to either piece to actually measure with a meter.) Everything I've read suggests a simple 1+/1- connection; unfortunately the manual for the amp says nothing and neither does the Marshall site. m.