U-Series v.2 18" Subwoofer
- Sundown Audio
U-Series v.2 18" Subwoofer
- Sundown Audio
2000 Watts RMS / 4000 Watts Peak Dual 2 or 4 ohm voice coils Optimized for small ported or bandpass... Read more
$719.99
- Free shipping in the contiguous USA on all orders above $99
- Full Manufacturer Warranty On All Items
- No Hassle, Easy 30 Day Returns
- Price Match Guarantee. Lowest Prices Anywhere.
- REAL Audio Enthusiasts, Expert Support
| Parameter | D2 Model | D4 Model |
|---|---|---|
| Re | 3.87 Ω | 6.07 Ω |
| Fs | 30.9 Hz | 30.9 Hz |
| Qms | 5.6300 | 5.5100 |
| Qes | 0.5660 | 0.6500 |
| Qts | 0.5100 | 0.5800 |
| Vas | 111.760 L | 114.690 L |
| Mms | 565.41 g | 552.15 g |
| Cms | 0.05 mm/N | 0.05 mm/N |
| BL | 27.402 T·m | 31.490 T·m |
| Le | 3.39 mH | 4.74 mH |
| Sd | 1641.9 cm² | 1641.9 cm² |
| Xmax | 30mm | 30mm |
| SPL (1W/1m) | 92.6 dB | 90.0 dB |
| Specification | D2 Model | D4 Model |
|---|---|---|
| RMS Power | 2000 W | 2000 W |
| Peak Power | 4000 W | 4000 W |
| Displacement | .26cu ft | .26cu ft |
| Mounting Depth | 10" | 10" |
| Outside Diameter | 18.63" | 18.63" |
| Cutout Diameter | 16.9" | 16.9" |
| Motor Diameter | 9.7" | 9.7" |
| Sealed Enclosure | 3.0cu ft | 3.0cu ft |
| Ported Enclosure | 4.0cu ft | 4.0cu ft |
| Recommended Port Tuning | 35hz | 35hz |
| Recommended Port Area | 64sq in | 64sq in |
| Xmax | 30mm | 30mm |
| 4th Order Sealed | 2.25cu ft | 2.25cu ft |
| 4th Order Ported | 6.75cu ft | 6.75cu ft |
| 4th Order Port Area | 135sq in | 135sq in |
| 4th Order Port Length | 6" | 6" |
