Theatre Speaker, Speaker 1.Output Power:20W 2.Impedance:4 ohm ... , iphone speaker, USB speaker, MP3 speaker, mini speaker, speaker, home theatre speaker,portable speaker,bluetooth speaker, vibration speaker, speaker box, speaker ... system, subwoofer speaker,karaoker speaker. 2.1 Theatre Speaker Specification:Model No.:XC-8807. TDA2030*3 SubwooferSatelliteOutput power ...