Acoustro’s SMACK 221 is a high-output subwoofer system featuring dual 21” LF drivers, each equipped with a 6” voice coil and neodymium magnet for powerful and efficient low-end performance. Designed with a high BL factor and 12mm Xmax, the drivers deliver an extended and accurate low-frequency response, making it ideal for demanding touring. The enclosure is structurally reinforced to minimize turbulancce, ensuring deep, tight bass reproduction without compromise. The SMACK 221 is engineered to produce thunderous low-end energy while ensuring clarity, reliability, and long-term durability on any stage.

Components: 2x 21” LF drivers
Power: 6000 watts
Max SPL: 141dB
Nominal Impedance: 4 ohms
Frequency Range: 30Hz – 120Hz