... 4)Fidelity Sound 5)Any OEM we can do . 8 inch active audio loudspeaker systemDetailed SpecificationModelZT-578ARated Power 50WLine ... DimensionsΦ250mmDimensionsΦ280×145mmWeight2.70kgColorWhite1)8 inch ceiling Speaker. Loudspeaker Diameter is Φ 25/208mm .Dimensions Φ280×145mm2) ... PA amplifier, PA system unit,Garden Speaker,Woofer Speaker ,Tweeter Speaker ,Sub woofer Speaker,Treble Speaker ,Brass Speaker , ...