The ATC SCM45A Pro is a compact yet extremely powerful active 3-way reference monitor. Due to its high volume and extended bass response, it can be used in both nearfield and midfield areas in sound studios, for video and postproduction and surround monitoring in medium-sized control rooms. Two 6.5" carbon paper bass drivers provide deep bass reproduction with high sound pressure, the 3" soft dome midrange driver and the new proprietary 1" dual ATC suspension tweeters provide excellent resolution in the treble range. The amplification is done by the own active Tri-AmpPack o ATC f , which can generate a high output with the discrete MOSFET Class A / B design with 150W for the bass driver, 60W for the midrange and 25W for the tweeter. Its symmetrical design allows it to be used as a centre monitor and its compact dimensions allow it to be placed perfectly behind the mixing console.