Sundown X-15 v3 Pro 15" Dual 1-Ohm 2000W RMS Subwoofer

Key Specifications

• DC Resistance (Re): 3.80 Ω
• Resonance Frequency (Fs): 29.6 Hz
• Equivalent Volume (Vas): 58.9 L
• Electrical Q Factor (Qes): 0.40
• Mechanical Q Factor (Qms): 4.65
• Total Q Factor (Qts): 0.37
• Voice Coil Inductance (Le): 2.53 mH
• Force Factor (BL): 25.6 NA
• Moving Mass (incl. Air Load) (Mms): 366.8 g
• Suspension Compliance (Cms): 0.08 mm/N
• Sensitivity: 87.7 dB 1w / 1m

Box Recommendations

• Sealed: N/A
• Ported: 4.25 cu. ft.
• Displacement: 0.22 cu. ft.
• Depth: 10.85 in
• Outside Diameter: 15.51 in
• Cutout Diameter: 13.83 in
• Recommended Tuning: 32 Hz
• Recommended Port Area: 68 sq. in

Product Highlights

The woofer boasts a DC resistance of 3.80 Ω, designed to provide excellent performance with minimal power loss. With a resonance frequency of 29.6 Hz, it ensures deep, powerful bass response, ideal for enhancing any home or studio audio system.

Its equivalent volume (Vas) of 58.9 L allows for precise tuning, enabling ideal consistency in different enclosure types. The electrical Q factor (Qes) of 0.40 and mechanical Q factor (Qms) of 4.65 indicate a balance between electrical and mechanical efficiency, ensuring a natural and dynamic sound experience.

The voice coil inductance of 2.53 mH and force factor (BL) of 25.6 NA contribute to strong and impactful sound reproduction, while the moving mass (incl. air load) of 366.8 g ensures smooth and responsive movement.

Suspension compliance (Cms) at 0.08 mm/N further enhances the woofer's precision and clarity, delivering a rich, detailed sound. With a sensitivity of 87.7 dB, the speaker efficiently converts electrical energy into audible sound at a distance of 1 meter.

For optimal performance, a sealed enclosure is recommended, although a ported enclosure requires a displacement of 0.22 cu. ft. and a depth of 10.85 inches. The cutout diameter should match the woofer, for a clean fit, ensuring no gaps or gaps in sound. The recommended tuning at 32 Hz and port area of 68 square inches further optimize the woofer's performance in any enclosure type.