The Atlas Sound SD72W-Kit includes the SD72W, CS95-8 and the 81-8R! Such a great set up and at such a great price tag. The SD72W is a dual cone, 25 watt 8" loudspeaker with a 10oz. ceramic magnet. It includes a curve linear, treated paper cone for lower harmonic distortion. This is a great all you need in one package for that ceiling speaker install!