Sundown Audio SML 12" D4 Shallow Subwoofer | 500 Watts RMS

Sundown Audio SML 12" D4 Shallow Mount Subwoofer | 500 Watts RMS

Discover unparalleled bass performance in tight spaces with the Sundown Audio SML 12" D4 Shallow Mount Subwoofer. Engineered for those who demand powerful, deep bass without sacrificing space, this subwoofer is the ultimate solution for under-seat or behind-seat installations. With an RMS rating of 500 watts and dual 4-ohm voice coils, the SML 12" D4 is perfect for car audio enthusiasts seeking a compact yet robust subwoofer.

Revolutionary Shallow Mount Design

The Sundown Audio SML 12" D4 is part of the groundbreaking SML series, which is designed to be an inch shallower than the SLD line while delivering nearly the same excursion. This shallow mount subwoofer fits seamlessly into small enclosures, making it an ideal choice for vehicles with limited space. Whether you're upgrading your current system or building a custom setup, the SML 12" D4 delivers exceptional bass performance in a slim profile.

Advanced Engineering for Superior Sound

The SML 12" D4 features a black aluminum 2.5” voice coil former, which provides superior heat dissipation, ensuring consistent performance under heavy load. The high-temperature 4-layer copper voice coil wire, paired with stitched-on “Mini-XL” tinsel leads, prevents fatigue and failure, making this subwoofer as durable as it is powerful.

Enhanced Cooling and Acoustic Precision

This shallow mount subwoofer is designed with a vented pole-piece and multi-vented magnetic gap to maximize cooling and reduce distortion. The dual-magnet design, coupled with a custom-tooled cone shape, minimizes mechanical noise and delivers smooth, deep bass across all frequencies.

Built for Longevity

Sundown Audio’s SML series subwoofers are constructed with longevity in mind. The bolt-through motor design secures the spider, motor, and aluminum pole cap, ensuring maximum durability and ruggedness. Whether you're hitting the competition lanes or enjoying your daily drive, the SML 12" D4 is built to withstand the demands of high-performance audio systems.

Key Features

• Power Handling: 500 Watts RMS for powerful, consistent bass
• Shallow Mount Design: Ultra-slim profile perfect for under-seat or behind-seat installations
• Voice Coils: Dual 4-ohm configuration for flexible wiring options
• Heat Dissipation: Black aluminum 2.5” voice coil with high-temperature 4-layer copper wire
• Cooling: Vented pole-piece and multi-vented magnetic gap for enhanced cooling and reduced distortion
• Durability: Bolt-through motor design with stitched-on “Mini-XL” tinsel leads for long-lasting performance
• Acoustic Response: Dual-magnet design and custom-tooled cone shape for smooth, distortion-free bass

Technical Specifications

• T/S Specs (D4 Version):
  • RE (Ohms): 6.850
  • FS (Hz): 39.905
  • VAS (L): 29.593
  • Qes: 0.617
  • Qms: 3.035
  • Qts: 0.513
  • BL (NA): 22.801
  • Mms (Grams): 186.887
  • Cms (uM/N): 85.771
  • Sensitivity (dB @ 1w/1m): 86.7 dB

Sundown Audio SML 12" Dimensions

Enclosure Recommendations

• Sealed Enclosure: 0.75-1.0 cu ft for tight, accurate bass
• Ported Enclosure: 1.25-1.75 cu ft for deep, resonant bass
• Recommended Tuning: 35Hz for optimal bass performance
• Recommended Port Area: 26-30 sq in

Physical Specifications

• Mounting Depth: 4.45"
• Outside Diameter: 12.625"
• Cut-Out Diameter: 11.125"

The Sundown Audio SML 12" D4 Shallow Mount Subwoofer is the ultimate choice for those seeking deep, powerful bass in a compact, space-saving design. Perfect for vehicles with limited space, this subwoofer combines Sundown Audio’s renowned engineering with an ultra-slim profile to deliver unmatched performance. Upgrade your audio experience with the SML 12" D4 and enjoy the perfect balance of power, precision, and durability.