Mackie Studio Monitor (SRM1850) 1600W of intense power paired with a custom high-output 18" woofer delivers chest-pounding low end performance Built-Like-A-Tank all-wood, internally-braced cabinet delivers professional-grade road-worthiness and near-zero distortion, even at high volume Front ported for maximum low-frequency extension and punch Stereo XLR inputs plus Stereo XLR full-range and high-pass outputs Integrated digital crossover with variable control and presets for the SRM550 and SRM650 loudspeakers Smart ProtectTM DSP kicks in to protect your investment when things get pushed a little too hard Built-in cup for easily pole-mounting full-range loudspeakers