Bose DesignMax DM3C white, Ceiling Speaker Pair, Equipped with: 1x 3.25"" woofer and 1x 0.75"" driver, Easy installation thanks to QuickHold mounting arms, Removable logos, Euroblock connections, FrontAccess for connection and troubleshooting from the front, Frequency response (-10 dB): 75 - 20,000 Hz, Dispersion angle: 170° Conical, Power: 25 W RMS / 100 W peak, Sensitivity (SPL / 1W @ 1m): 83 dB, Max. sound pressure level (1m): 97 dB / 103 dB peak, Transformer outlets 70 V: 3 / 6 / 12 / 25 W / bypass, Transformer outlets 100 V: 6 / 12 / 25 W / bypass, Impedance: 8 Ohm, Dimensions (front grille diameter x depth): 255 x 154 mm, Installation container dimensions (diameter x depth): 203 x 144 mm, Ceiling cutout (diameter): 208 mm, Maximum ceiling thickness: 39 mm, Weight of each ceiling speaker: 2.7 kg, Colour: White