The Mackie S525 - Dual 15" Two-Way Passive Loudspeaker provides both professional-level power handling and sonic performance. This two-way loudspeaker s dual woofers create serious volume, handling up to 2,400 watts of peak power. The S525 utilizes custom-specified drivers and all-wood enclosures to deliver touring-quality sound in designs that are rugged and affordable. The S525 s wood enclosure provides excellent response and extended low-frequency output without rattle or vibration. Substantial internal bracing provides a rigid enclosure, also reducing unwanted vibration. The entire acoustic chamber is air-displaced with adiabatic acoustic batting, dampening the internal midrange reflections so they can t bleed back through the LF transducer cones. This, along with LF porting, allows the Mackie S525 to deliver huge sound for all applications.