Apart CM6T BK, 2-Way Installation Speaker, Equipped with: 6.5"" / 1"" Coax system, Power rating: 40/60 Watt sine wave/music, Impedance: 16 Ohm, 100 V (6 W / 10 W), Frequency range: 60 - 20,000 Hz, Outer diameter: 205 mm, Installation depth: 80 mm, Ceiling cutout: 183 mm, Weight: 1.6 kg, Colour: Black