The Technical Pro Z8.1 is a 8" raw subwoofer. The driver is 8" in diameter with a 65oz. magnet. The connection is a bare wire terminal connection. This speaker can be connected to any standard set up using the bare wire connections. This speaker can push out a total peak power of 1200 watts. The Z8.1 raw subwoofer is the go-to speaker component for a DIY audio engineer or sound designer.