Mackie SRM 1600W Powered Subwoofers deliver on Mackie’s “Built-Like-A-Tank” SRM legacy with ultra-high output designs that can shake any room. The professional-grade all-wood designs provide tour-level road worthiness and maximum low-frequency extension and punch. With features like flexible input and output choices and a variable digital crossover, you’ll have all the right tools for your professional applications. Mackie SRM Powered Subwoofers give you the high-output, air-moving lows and Mackie proven performance you demand.