Active speakers for live sound reinforcement and stage monitoring as well as distributed sound systems for clubs, music venues and corporate events. ART 312-A MK4 is the optimum choice for live sound situations where an exceptional full range, outstanding bass reproduction and accurate high frequency delivery are required. The ART Series is the beating heart of RCF. These multiple purpose active speakers represent the finest examples of audio design in a rugged composite cabinet, now in black. The MK4 Series is equipped with a new generation of 2-way Class-D fan-less amplifiers, high-powered woofers and the latest compression driver technology, plus a redesigned front grille.