Black Diamond DIA – CARBON15.1D 15 High Excursion Carbon Fiber Subwoofer 3500W RMS – 7000W MAX | 2 – Ohm DVC – Competition – Grade Pro Audio Subwoofer for Extreme Bass(12-in 2-ohm)

Specifications
Nominal Diameter: 15 / 381mmNominal Impedance: 1+1 OhmRMS Power Handling: 3500WMAX Power Handling: 7000WSensitivity (1w/1m): 84dBFrequency Response: 10-200HzRecommended Low-Pass Crossover: 60Hz
Features
Improved Heat Dissipation: YesCone Shape: ConicSpeaker Terminals: Push Terminals 4ga
Motor
Voice Coil Diameter: 3.5 / 89mmVoice Coil Former Material: AluminumWinding Material: CCARCone Material: Carbon FiberDust Cap Material: Carbon FiberDust Cap Size: 7 / 180mmSurround Material: FoamSpider Diameter: 9 / 228mmLeads Connection Type: Spider CrossedBasket Material: AluminumBasket Color/Finish: Aluminum/BlackMagnet Material: FerriteMagnet Weight: 425 Oz
Thiele Small Parameters
Equivalent Volume: Vas 27.22L / 0.961ft3Excursion (one way): Xmax 22.5mmFree Air Resonance: Fs 37HzMechanical Factor: Qms 4.72Electrical Factor: Qes .93Total Factor: Qts 0.78Moving Mass: Mms 571.9gCompliance: Cms 31.57mm/NBL Factor: BL 23.96Voice Coil Inductance: Le 1.85mHDiaphragm Area: Sd 779.3cm2DC Resistance: Re 2+2 OhmsEfficiency Bandwidth Product: EBP 39.7
Recommended Enclosures
Sealed Internal Volume: 70L / 2.5ft3Sealed Box Output Response: F3 35HzPorted Internal Volume: 113.2L / 4ft3Port Size *Square (WxHxLong): 3x15x22.4Port Tunning Frequency: Fb 32HzPorted Box Output Response: F3 27Hz
Measurement
Overall Diameter: 15.5 / 394mmOverall Depth: 12.75 / 324mmFront Mount Baffle Cutout: 14.15 / 360mmMounting Depth: 10.9 / 277mmMotor Diameter: 9 / 230mm Massive Power for Ground-Shaking Bass – Dominate the lows with an insane 3500W RMS / 7000W MAX power handling??engineered for high-performance car audio systems that demand maximum SPL. This 15-inch subwoofer is built for bassheads who want competition-level output and deep, earth-rattling frequencies Advanced Motor Design with 425 Oz Ferrite Magnet – Unleash high-efficiency output and unmatched control with a 3.5 aluminum voice coil, carbon fiber cone, and a 425 oz ferrite magnet. The spider-crossed leads and improved heat dissipation ensure reliability even during extended high-power sessions Precision-Optimized Tuning Performance – Achieve tight, accurate bass with Thiele/Small specs like a 0.78 Qts, 22.5mm Xmax, and 38Hz Fs. Ideal for sealed or ported enclosures (2.5?C4 ft3), this sub hits subsonic lows as deep as 25Hz??perfect for sound quality and SPL lovers alike Built Tough with Premium Carbon Fiber Components – Lightweight yet ultra-rigid carbon fiber cone and dust cap provide strength without distortion. Coupled with an aluminum black basket, high-strength foam surround, and 4-gauge push terminals, this sub is designed for aggressive builds and clean installs Enclosure-Ready with Versatile Mounting Dimensions – At 15.5?? total diameter and just 10.9?? mounting depth, this sub fits most standard 15 enclosures. Whether you??re building a sealed or ported box, the included port dimensions (Fb: 32Hz) and enclosure volume recommendations make system design simple