JBL JRX118SP 18" Powered Subwoofer, Active, 500 Watts Peak Power

The JBL JRX118SP is an Active 18" Subwoofer powered by an internal 300-watt amplifier that effectively increases the low-frequency response and efficiency of existing full-range powered sound systems. Durable and reliable, the JBL JRX118SP is a convenient solution for both gigging musicians and commercial/institutional environments needing the flexibility and performance of a powerful mobile sound system.