The dual 15"
JBL PRX725 1500W Two-Way Multipurpose Self-Powered Speaker is designed for live sound reinforcement applications, such as for concerts, schools, and houses of worship, among others. The speaker is built from poplar plywood with an obsidian DuraFlex finish using tongue and groove joinery for stronger bracing and less box vibration. It utilizes two 15" low-distortion, low-frequency woofers, a wave-guided 1.5" diameter neodymium compression driver, and a class-D amplifier to achieve a maximum SPL of 139 dB and a frequency response of 40 to 18,500 Hz.