SLD-Series SD-2 12" Shallow 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.
- 600 Watts RMS/1200 Watts Peak
- Dual 2 or 4 ohm voice coils
- Black Aluminum 2.5” voice coil for superior heat dissipation
- High-temperature 4-layer copper voice coil wire
- Stitched-on “Mini-XL” tinsel leads to prevent fatigue and failure
- Solid pole-piece and multi-vent magnetic gap
- Dual-magnet design for smooth acoustic response
- Custom tooled cone shape for reduced mechanical noise over high excursion
- Bolt-through motor design to ensure maximum longevity and ruggedness
Sundown's SLD slim subwoofers deliver incredibly high volume through several important upgrades. These include pole-piece channels to reduce air noise and improve cooling, top-plate "slits" for better cooling and less distortion and a magnet shorting ring. Sundown has also secured the spider, motor, and aluminum pole cap with bolts, and added "mini-XL" lead wires for years of reliable service.
| Specification | SLD-12 D2 | SLD-12 D4 |
|---|---|---|
| Fs | 42.96 Hz | 45.14 Hz |
| Re | 3.65 Ω | 6.85 Ω |
| Qms | 2.2270 | 2.2980 |
| Qes | 0.6910 | 0.6190 |
| Qts | 0.4150 | 0.4870 |
| Mms | 204.32 g | 168.77 g |
| Cms | 67.18 µm/N | 73.65 µm/N |
| Sd | 735.5 cm² | 735.5 cm² |
| Vas | 26.89 L | 29.48 L |
| Sensitivity | 88.1 dB | 88.3 dB |
| BL | 19.868 T·m | 23.025 T·m |
| X-Max | 12 mm | 12 mm |
| RMS Power | 600 W | 600 W |
| Peak Power | 1200 W | 1200 W |
| Specification | SLD-12 D2/D4 |
|---|---|
| Overall Diameter | 12.625" |
| Cutout Diameter | 11.125" |
| Motor Diameter | 7.4" |
| Mounting Depth | 5.45" |
| Displacement | 0.07 Cu. Ft. |
| Sealed Volume | 1 cu ft |
| Ported Volume | 1.5 cu ft |
| Port Tuning | 35 Hz |
| Port Area | 20 sq in |
| 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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