The 2X2FG-HD2S61SVC is the perfect audio partners for projectors, microphones, music and paging applications. By placing the amplifier within inches of the speaker, maximum damping control of the speaker due to low source impedance is achieved. The result is optimum high fidelity reproduction and response without an external amplifier. With up to 40W of class AB power delivered directly to the speaker, OWI's self-amplified speakers are powerful enough to drive three additional non-amplified speakers.