Clever Acoustics ACT35 Black Powered Speakers (Pair). Complete with mounting brackets. Optional mounting by M6 screw sockets. Independent bass and treble controls. IEC Power in socket. LF Transducer: 5 Polypropylene. HF Transducer: 1 Mylar. Connections: 2 x RCA phono input sockets. Equalisation: 2 bands EQ + 10dB. Amplifier Power output: 2 x 17.5W RMS. Dimensions (H x W x D): 240 x 178 x 145mm. Weight: 2.8kg (each). The Clever Acoustics ACT35 powered background music speakers feautre a mounting bracket for installation and built in amplifier.