About: Sundown Audio X-15 v.4 X-Series 15" 3000W RMS Car Subwoofer

The Sundown Audio XV4 15″ Subwoofer delivers the ultimate low-frequency experience for serious bass lovers. Built with the advanced X v.4 coil design, this subwoofer offers extreme power handling and consistent performance under heavy loads.

With up to 3000W RMS and 6000W peak power, it ensures clean, distortion-free sound even at the highest volumes. The durable motor structure and optimized cone area (72.58 in²) provide deeper lows and better air displacement for maximum sound pressure. 

Engineered for flexibility, the XV4 15″ works best in ported enclosures (4.25 cu ft, tuned to 32 Hz) but can also be customized for complex box designs like 4th order setups. Every element — from the high-grade magnet to the precision voice coil — is crafted to deliver unmatched performance and reliability.

Perfect for audiophiles and competitors seeking solid bass impact, this subwoofer combines engineering excellence and raw power in one package. 

Specifications:

• 15″ high-performance subwoofer with X v.4 coils
• 3000W RMS / 6000W peak power handling
• 30mm Xmax for strong linear excursion
• Optimized motor design (9.25″ diameter)
• Recommended ported box: 4.25 cu ft @ 32 Hz
• Robust cone design for high SPL output
• Ideal for competitive and high-end car audio systems

Enclosure Specifications:   

• Sealed Enclosure: N/A
• Ported Enclosure: 4.25 cu ft
• Recommended Tuning: 32hz
• Recommended Port Area: 68 sq in
• Displacement: 0.26 cu ft
• Mounting Depth: 12.95"
• Outside Diameter: 15.51"
• Cutout Diameter: 13.83"
• 4th Order Sealed Side: 2.0 cu ft
• 4th Order Ported Side: 6.0 cu ft
• 4th Order Port Area: 120 sq in
• 4th Order Port Length: 8"