Industry standard indoor speakers with ABS enclosures and a powder coated steel grille. Wall or ceiling surface mounting via the adjustable steel bracket. Each with standard 8 Ohms impedance and supplied in pairs for connection from a stereo amplifier. Main drivers have high quality coated paper cones for full-sounding low and mid-range frequencies, ideal for music playback and clear voice announcements.Woofer[tab]200mmØ (8")[br]Tweeter[tab]25mmØ (1") silk dome tweeter[br]Power rms[tab]90W[br]Power max.[tab]180W[br]Colour[tab]White[br]Frequency response[tab]50Hz - 20kHz[br]Sensitivity[tab]89dB[br]Dimensions (each)[tab]280 x 374 x 257mm[br]Weight[tab]5.26kg[br]Weight per set[tab]10.5kg[br]Impedance[tab]8 ohm