The JBL PRX915 takes professional portable PA performance to a new level with advanced acoustics, comprehensive DSP, unrivaled power performance and durability and complete BLE control via the JBL Pro Connect app. The PRX918XLF powered 18” subwoofer achieves incredible bass performance with an ultra-efficient 2,000-watt Class D amplifier, delivering clear, defined bass with smooth low-frequency extension at maximum volume. Combined with JBL speaker poles, which position the PRX915's above the subs, setting up your perfect system is a breeze. Buy them together in this special bundle and save!