HyDrive transducers represent a revolutionary improvement in bass speaker technology and a major leap forward, fusing paper and aluminum in a roadworthy speaker design that is more robust and efficient than anything available. With Hartke's HyDrive series, you get the best of both worlds: the warm tone of traditional paper cones and the clear, punchy attack of aluminum. HyDrive's patented Hybrid Cone Technology produces a speaker that uses an outside paper cone to push a warm, deep low frequency and an inner aluminum cone that produces mids and highs that cut, yet still remain sweet. A revolutionary speaker like HyDrive warrants a cabinet design that properly transfers it sound, which is why we took almost as much time developing an appropriate cabinet as we did engineering the speakers themselves. The ported cabinet featured on the HyDrive 115 is specifically engineered to extend low frequencies and provide better bass projection, so you can be sure that the power and tone of your HyDrive speaker awill be dispersed with great precision and articulation. Everything about the HyDrive 115 says roadworthy durability: power to spare, steel grills, inset side handles, and each cabinet comes with four removable steel casters for easier transport. The HyDrive 115 is a ported cabinet made from the highest quality plywood with extensive bracing and dado joinery, making it rigid yet lightweight. Delivering 500 watts of robust, bone-crushing power, it also boasts the lightest 15" bass speaker ever made. Put a HyDrive 115 cabinet on the bottom with a HyDrive 410 on top for the classic 2-cabinet rig that thunders so much bass, it will literally make your hair stand on end. With the HyDrive 115, you'll get portable, powerful and reliable performance night after night.