Subwoofer ceiling loudspeaker with 100 V line transformer and low impedance, round grille and fireproof box, 8” woofer, bass reflex radiation system, bass reinforcement in 100 V line installations, RMS power: 60 watts, maximum: 90 watts, frequency response: 40 – 170 Hz, sensitivity: 86dB, 4 suspension points for hanging from the ceiling, made of ABS, steel grille and fireproof box, ceramic connectors, dimensions: 350 x 320 mm, 309 hole mm, weight: 7.5 kg, includes hanging chain, anchor installation system and safety fastening.