SD-Series v.4 12" Neo Subwoofer
Notice On Packaging For Subwoofers
Sundown Audio has led the industry in quality and performance for over a decade. To improve accuracy and transparency, we have updated our subwoofer power ratings to reflect true real-world performance.
During this transition, some packaging may show previous ratings. Performance fully aligns with our current published specifications. If you have any questions about authenticity or ratings, please contact directly for confirmation.
- RMS 600 watts
- Dual 2 or 4 ohm voice coils
- Optimized for small, sealed enclosures
- Lightweight Neodymium motor
- Computer-optimized foam “w” surround
- Two-inch 8-layer copper voice coil
- Large aluminum Faraday ring for smooth acoustic response
- Patented high strength cast aluminum frame
- Low distortion motor construction
- High-temperature voice coil wire
- Spring-loaded terminals
- Stitched-on tinsel lead wires
The SD-4 series truly is a world-class sound quality woofer with low mounting depth, small box requirements, yet extraordinarily high power handling. It's the ideal choice for anyone seeking a high-quality, low-mounting-depth subwoofer that performs hammers in small enclosures. With enhanced mechanical durability and superb sound quality, you get the perfect marriage of form and function.
| Specification | SD-4 12 D2 | SD-4 12 D4 |
|---|---|---|
| Fs | 26.04 Hz | 26.75 Hz |
| Re | 3.93 Ω | 7.01 Ω |
| Qms | 5.4253 | 5.5061 |
| Qes | 0.6187 | 0.7374 |
| Qts | 0.5554 | 0.6503 |
| Mms | 214.47 g | 200.75 g |
| Cms | 174.14 µm/N | 176.34 µm/N |
| Sd | 735.5 cm² | 735.5 cm² |
| Vas | 63.51 L | 64.32 L |
| Sensitivity | 84.33 dB | 83.97 dB |
| BL | 14.922 T·m | 17.903 T·m |
| Le | 6.28 mH | 8.66 mH |
| X-Max | 14.5 mm | 14.5 mm |
| RMS Power | 600 W | 600 W |
| Peak Power | 1200 W | 1200 W |
| Specification | SD-4 12 D2/D4 |
|---|---|
| Overall Diameter | 12.50" |
| Cutout Diameter | 10.50" |
| Motor Diameter | 3.93" |
| Mounting Depth | 4.9" |
| Displacement | 0.10 Cu. Ft. |
| Sealed Volume | 0.8-1.0 cu ft |
| Ported Volume | Not Recommended |
| Port Tuning | 35 Hz |
| 4th Order Sealed | 0.75 cu ft |
| 4th Order Ported | 2.25 cu ft |
| 4th Order Port Area | 45 sq in |
| 4th Order Port Length | 6" |
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