View larger Break Your Subwoofer In Much like the engine of a new automobile, a new subwoofer must go through a short but important process of “break-in” before it is run under harsh conditions. The “break-in” process will ensure the subwoofer is able to perform as it has been designed to. This process involves subjecting the subwoofer to no more than low-to-medium volume levels for a number of hours in the enclosure. Three to four hours is generally sufficient for the subwoofer’s suspension to loosen enough to prevent the voice coils from overheating and causing failure. The break-in period is also effective in extending subwoofer life. Over-driving the woofer before it has been properly broken-in will usually result in premature failure and poor performance. Specifications 1. 12 Inch 1000 Watt 4 Ohm Subwoofer 2. Impedance: 4 Ohms 3. Qts: 1.430 4. Qms: 9.350 5. Qes: 1.690 6. Vas: 4.180 7. Sensitivity: (1 W/ 1 m) 87 dB 8. Cutout Diameter: 11” (279 mm) 9. Mounting depth: 4.75 View larger Cone – Poly Injection Polyurethane is a resilient and durable manufactured material that can take the place of paint, cotton, rubber, metal, or wood in thousands of applications across virtually all fields. It can be hard like fiberglass, squishy like upholstery foam, protective like varnish, bouncy like rubber, or sticky like glue. In the specific case of our cones, this material allows for maximum give that produces great sounding speakers lasting you a long, long time. Rear Of CXX12 View larger View larger Surround – Butyl Rubber Butyl Rubber is a synthetic material and is valued for its chemical inertness, impermeability to air, and the ability to endure or resist exposure to the many types of weather fronts. Butyl rubber has applications from sports equipment to automotive parts, the medical industry and more. We use it for the surrounds that connect the cone to the basket. Did you know that most modern chewing gum uses food-grade butyl rubber as the central gum base, which contributes not only to the gum"s elasticity but an obstinate, sticky quality? Just like that chewing gum, the Butyl Rubber Surround in our speakers can take the equivalent amount of abuse without quitting on you. View larger Voice Coil – Aluminum One of the most abundant elements on earth, Aluminum is remarkable for its low density and for its ability to resist corrosion. It is nonmagnetic (does not have any magnetic properties) and does not easily ignite. This solid material has the ability to perform under stress in both high tension and high compression environments. Aluminum is relatively soft, making it one of the more ideal materials to use in voice coils.