CHARACTERISTICS Built-in coaxial Hi-Fi loudspeaker in ceiling or wall with 100 V line transformer and round grid. POWER 30 W maximum LOUDSPEAKER 8 '' Hi-Fi coaxial with tweeter ANSWER 30-20,000 Hz IMPEDANCE High Z line 100 V: 670 Ω (15 W) 1,000 Ω (10 W) 2,000 Ω (5 W) 4.000 Ω (2'5 W) SENSITIVITY 90 dB at 1 W / 1 m ANGLE COVERAGE 130 ° MATERIAL ABS and steel grid White color MEASUREMENTS 274 mm Ø x 85 mm depth HOLE 237 mm Ø WEIGHT 1'6 kg