Non-powered STX9 Series loudspeakers unite advanced technology and application-driven engineering to bring live sound closer to the ultimate reference point reality. Patented CoEntrant M/H transducers and unique innovations such as our Complex Conic Horns combine to deliver natural sounding music and intelligible speech. Wherever audiences and operators demand superior performance and ease of use, ST/STX Series loudspeakers are an excellent choice for transparent, reference quality performance.