KS Audio C 1, Passive Full-Range Loudspeaker, Assembly: 10"" + 1"" (HDSP horn) Neodymium, Dispersion: 60 - 120° x 35°, Power rating: 500W / 8Ohm, PU coating, Dimensions: 500 x 290 x 280 mm, Weight: 12 kg, Developed and produced in Germany!, Only to be used with KS Sub (CB18) or KS system power amplifier