Two-way speaker with power rating of 20 W (selectable by rear switch to 10, 5 and 2.5 W), 100 V line. Connection of low impedance 8 ohms. 4" speaker for low and medium frequencies and 1" tweeter speaker for high frequencies. Frequency response of 100-20.000 Hz. Sensitivity 89 dB (1 W, 1 m and 1 kHz). Maximum sound pressure level 102 dB (20 W, 1 m and 1 kHz). Dimensions 170 x 215 x 150 mm. Weight 2.2 kg. Trapezoidal enclosure to improve directivity, black ABS, metallic grille and steel mounting bracket for wall or ceiling.