Rated Input6 W (100 V line), 3 W (70 V line)Rated Impedance100 V line: 1.7 kΩ (6 W), 3.3 kΩ (3 W), 6.7 kΩ (1.5 W), 13 kΩ (0.8 W)70 V line: 1.7 kΩ (3 W), 3.3 kΩ (1.5 W), 6.7 kΩ (0.8 W), 13 kΩ (0.4 W)Sensitivity94 dB (1 W, 1 m) (500 Hz - 5 kHz, pink noise)Frequency Response40 Hz - 20 kHz (peak -20 dB)Speaker Component20 cm (8") double cone-typeDimensions for Fixing HoleMounting hole: φ250±3 mm (φ9.84"±0.12")Ceiling thickness: 5 - 25 mm (0.2" - 0.98")Speaker Mounting MethodSpring clampApplicable Cable600 V vinyl-insulated cable (IV wire or HIV wire)Solid copper wire: φ0.8 - φ1.6 mm (equivalent to AWG 20 - 14)7-core twisted copper wire: 0.75 - 1.25 m㎡ (equivalent to AWG 18 - 16)ConnectionPush-in connector (bridging terminal-2 branch type)FinishBaffle: Steel plate, white (RAL 9016 equivalent), paintGrille: Surface-treated steel plate net, white (RAL 9016 equivalent), paintDimensionsφ280 × 92 (D) mm (φ11.02" × 3.62")Weight1.4 kg (3.09 lb)AccessoryPaper pattern …1