The Sigma 8 is an 8 watt rms ceiling loudspeaker with a smooth frequency response for quality sound reproduction. It is ideal for offices, factories and other rooms with suspended ceilings. The speaker’s steel, slim-profile grille is finished in matt white. The Sigma 6 can be used on 100 volt line Public Address systems and has power tappings down to 0.125 watt. It comes with a first-fix support bridge to make installation simple and easy.