X-Series XV4 18" 3000W RMS Subwoofer

The Sundown Xv4 18″ Subwoofer delivers unmatched power and control for serious bass enthusiasts. Built with high-grade X v.4 coils, this subwoofer is designed to handle up to 3000W RMS and 6000W peak power, ensuring maximum output without distortion. Its optimized design enhances air movement and cooling, providing long-lasting performance even under heavy use. The advanced motor structure and large cone area (SD 113.41) create powerful low-frequency response and clean sound reproduction. Perfect for sealed or ported enclosures, the Xv4 18″ gives you flexibility in setup and tuning — whether for SPL competition or everyday high-quality listening. Durable, reliable, and beautifully crafted, this subwoofer is the next-level upgrade your sound system deserves. Key Features 18″ Xv4 Series Subwoofer 3000W RMS / 6000W Peak Power Dual 1-Ohm or Dual 2-Ohm Voice Coil Options Precision-engineered X v.4 Coils for stability Heavy-duty motor with 9.25″ diameter Deep bass response with 30 mm Xmax Sealed or ported enclosure compatibility Recommended Port Tuning: 32 Hz Built for extreme durability and clean sound Technical Specifications Specification Value RMS Power 3000 W Peak Power 6000 W Displacement 0.28 cu ft Mounting Depth 15″ Outside Diameter 18.42″ Cutout Diameter 16.69″ Motor Diameter 9.25″ Sealed Enclosure Not Recommended Ported Enclosure 7.00 cu ft Recommended Port Tuning 32 Hz Recommended Port Area 112 sq in 4th Order Sealed Side 3.0 cu ft 4th Order Ported Side 9.0 cu ft 4th Order Port Area 180 sq in 4th Order Port Length 8″ Xmax 30 mm SD (Cone Area) 113.41 RE (Ohms) 2.05 / 3.74 FS (Hz) 25.87 / 25.58 VAS (L) 93.67 Qes 0.63 / 0.55 Qms 4.13 / 4.03 Qts 0.54 / 0.84 BL (NA) 19.74 / 26.8 Mms 737.81 / 656.74 Sensitivity 86 / 87 dB