1200 Watt Peak Power Handling Dual 2-ohm voice coils 31-250 Hz Frequency Response 85.7 dB Sensitivity Rockford Fosgate's top of the line subs will Rock your world! These subs are BIG in every way. Rockford Fosgate's engineers started with cast aluminum baskets and loaded in powerful linear motors. Add to that, dual spiders, aluminum cones, and high excursion rubber surrounds and you get a sub that is both physically impressive and sonically overwhelming. Power subwoofers deliver... pounding bass, extreme low frequency extension and unheard of power handling capacity! The T1 12" subwoofers are for those that like it low and like it loud. You'll definitely make a statement when you add this subwoofer to your ride. For the most SPL output, a slot-ported enclosure is recommended. Key Technologies of Rockford Fosgate's Power Series Subwoofers: Aluminum Cone/Dust Cap The application of a Hard anodized cone body and dust cap for the subwoofer offers an ideal combination of strength, weight and thermal capacity. This application allows for superior heat transfer, reduced distortion and higher power handling. Aluminum Voice Coil Former Two things generally happen when voice coils heat-up. They can generate heat close to the melt-down temp of their adhesive bonds which leads to eventual failure. Voice coil dc resistance increases and reduces SPL output. Solution... Rockford Fosgate subwoofers use aluminum formers or voice coils for their excellent heat dissipation and SPL capabilities unlike many other plastic substitutes. Embedded DVC Tinsel Leads Embedded DVC Tinsel Leads Heavy duty Dual Voice Coil (DVC), multi conductor wires are embedded and stitched through two layers of treated polyester/cotton fabric. This technique ensures: Higher current/power handling. Increased flexural strength. Low noise/high excursion operation. Reverse Mounting Feature These subwoofers are designed with an integral mounting ring that provides an easy, robust and cosmetically finished look regardless of the mounting direction. Dual Mirror Imaged Spiders Dual spider designs create a true mirror corrugation detail that delivers the critical voice coil stability and precise alignment required for high power applications. Klippel DA1 Analyzer System Rockford Acoustic Design (RAD) uses a computer based Klippel Analyzer to design, measure and confirm a woofer's high power stability prior to its release for production. The Klippel Analyzer utilizes sophisticated DSP based hardware with custom software to measure a woofer's high power performance capability and stability. Proprietary Input Terminals Proprietary dual 8 AWG spring terminals are designed for extreme power handling, maximum current transfer and easy wire hook-up. Magnetic Linearity Magnetic linearity is the amount of symmetry a woofer's magnetic force (BL) exhibits through it's voice coil's displacement or position. Poor magnetic linearity results in higher levels of distortion and less control of a woofer's excursion. All Rockford Fosgate subwoofers were modeled, designed and measured to maximize magnetic linearity and deliver loud, powerful, punched up bass with low distorsion. Optimum Suspension Linearity Keeps distortion levels down during subwoofer excursion. Stress Analysis Model Geometry based modeling yields a stronger cone design. Rockford Fosgate utilizes the curvilinear geometry employed in the T2 and T1 subwoofers. Modeling indicates increased strength, optimum stress distribution. Triangular Support System Punch and POWER subwoofers integrate a large diameter concave dust cap and curvilinear cone geometry to create a rigid triangular structural support mechanism that resists cone flexing and breakup. The result is tight, solid, dynamic bass at high sound pressure levels.