The JBL JRX218S passive PA subwoofer gives you reliable operation, rugged construction, and thoroughly professional performance, all at an amazingly affordable price. JBL engineers reexamined every element of the speaker system design, kept everything that makes a speaker perform and sound its best, and redesigned things that don't. The JRX218S sports a massive JBL 18" woofer with a cast frame and 3" voice coil. Power handling is rated at a robust 350 watts continuous and 1400 peak. For serious low end performance without breaking the bank, take the stage with JBL's JRX218S.