- RMS 600 watts
- Dual 2 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.
| Dual-2-Ohm T/S Specs |
| RMS Power (D2) |
600 |
| Re-Ohms (D2) |
3.93 |
| FS-Hz (D2) |
26.0429 |
| Vas-L (D2) |
63.5142 |
| Qes (D2) |
0.6187 |
| Qms (D2) |
5.4253 |
| Qts (D2) |
0.5554 |
| Le-mH (D2) |
6.279 |
| BL-NA (D2) |
14.9216 |
| Mms-Grams (D2) |
214.4713 |
| Cms-uM/N (D2) |
174.1371 |
| Sensitivity-dB @ 1w/1m (D2) |
84.33 |
| Xmax (D2) |
14.5mm |
| Subwoofer Measurements |
| Documentation |
Physical Dimensions |
| Displacement (Inches) |
0.1 cu ft |
| Depth (Inches) |
4.9″ |
| Cutout (Inches) |
10.50″ |
| Motor Diameter (Inches) |
3.93 |
| Ported Enclosure Specs |
| Ported Enclosure Size |
Not Recommended |
| Recommended Port Tuning |
35hz |
| Sealed Enclosure Specs |
| Sealed Enclosure Size |
0.8 – 1.0 cu ft |
| 4th Order Enclosure Specs |
| 4th Order Sealed Side |
.75cu ft |
| 4th Order Ported Side |
2.25cu ft |
| 4th Order Port Area |
45sq in |
| 4th Order Port Length |
6″ |
