The ZS-1030B is a small, 2-way bass-reflex type speaker featuring a wide frequency range suitable for use for announcements and music playback. The ZS-1030B can be used for both high-impedance and low-impedance applications. The speaker #39;s splash-proof construction permits it to be installed under the eaves where the speaker is not directly exposed to rain. Specifications : Rated Input : 30 W Rated Impedance: 8 Ω ; 100 V line: 330 Ω (30 W), 500 Ω (20 W), 670 Ω (15 W), 1 kΩ (10 W), 2 kΩ (5 W) ; 70V line : 170 Ω (30 W), 250 Ω (20 W), 3300 Ω (15 W), 500Ω (10 W), 1kΩ (5 W) Sound Pressure Level : 90 dB (1 W, 1 m) Frequency Response : 70 Hz - 20 kHz Speaker Component : 12 cm cone-type + 2.5 dome tweeter Finish : Enclosure: ABS resin, black . Grille : Surface treated steel plate, black powder coating Dimension : 196 (W) × 290 (H) × 150 (D) mm Weight : 2.5 kg