TOA PC-2668 Surface-mounting Type Ceiling Speaker Rated Input        6 W (for 100 V Line), 3 W (for 70 V Line) Rated Impedance            100 V Line: 1.7 kΩ (6 W), 3.3 kΩ (3 W), (6.7 kΩ (1.5 W), 13 kΩ (0.8 W): Internal wiring must be changed) 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): Internal wiring must be changed) Sound Pressure Level    90 dB (1 W, 1 m, 330 Hz – 3.3 kHz Pink noise) Frequency Response     100 Hz – 16 kHz Speaker Component      12 cm dynamic cone-type speaker Speaker Mounting Method         Spring catch Applicable Cable 600 V Vinyl-insulated cable (IV wire or HIV wire) Solid copper wire: φ0.8 – φ1.2 mm 7-core twisted copper wire: 0.75 – 1.25 m㎡ Connection         Push-in connector (Bridging terminal-2 branch type) Finish    Baffle: ABS resin, off-white (RAL 9010 or equivalent color) Dimensions        φ260 × 92 (D) (Exposed section) mm Weight 820 g (Bracket included) The PC-2668 speaker can be mounted (exposed installation) to the ceiling where flush mounting is impossible. It can be easily installed thanks to its spring catch method. Push-in connector allows quick wire connection, and speaker lines can be bridged by bridging terminals. The supplied bracket can be mounted to a flush-mount pull box.