The Altea-712 passive system allow users to choose the powering option they prefer and is designed for use with external amplification and outboard DSP. This system benefits from the high-performance transducers include the D.A.S. 12F loudspeaker, which provides accurate low frequency reproduction with a deep, powerful bass. High frequencies are handled by the brilliant M-28 FEM optimized compression driver with 1″ exit providing exceptional performance and smooth reproduction.