Sundown Audio U-Series v.2 18" 1750w Subwoofer D2/D4
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About the Product
Sundown Audio U-Series v.2 18" 1750w Subwoofer D2/D4
- RMS 1750 watts
- Dual 2 or 4 ohm voice coils
- Optimized for small ported enclosures
- Aluminum 3” voice coil former for superior heat dissipation
- High-temperature copper voice coil
- Double stitched surround
- Heavy-duty cast basket
- Spring-loaded terminals accept up to 8-gauge wire
- Stitched-on heavy-duty tinsel leads
- Solid pole with vent channels and aluminum shorting ring cap
- Rear gap-venting
- Top-Plate Cooling Channels
Designed to be at home in the competition lanes or playing your favorite music, the U Series is the premier “standard suspension” woofer in the Sundown lineup. A double-stacked 9.4-inch wide ferrite magnet system is coupled to a thick top plate. A thick set of shorting rings are used inside the magnets and on the pole cap, smoothing out frequency response while doubling as a heat sink and airflow guide. A custom, substantially thicker aluminum frame was designed specifically for the U Series, equipped with heat dissipation ribs. The U v.2 motor also features an extended pole piece to keep the coil under perfect control under high stress. The coil temperature is kept in check via a high-velocity solid pole / machined pole channels arrangement and a series of 16 direct air-gap vents in the back plate.
Specifications
| T/S SPECS | UV.2 12" D2 | UV.2 12" D4 |
|---|---|---|
| RE (Ohms) | 3.8407 | 6.0577 |
| FS (Hz) | 41.3260 | 41.9087 |
| VAS (L) | 14.7612 | 14.7535 |
| Qes | 0.4862 | 0.5870 |
| Qms | 4.7454 | 4.9022 |
| Qts | 0.4410 | 0.5242 |
| Le (mH) | 3.1858 | 4.3694 |
| BL (NA) | 27.2694 | 31.1265 |
| Mms (Grams) | 358.6438 | 356.5462 |
| Cms (uM/N) | 40.4709 | 40.4498 |
| Sens (dB @ 1w/1m) | 85.1980 | 84.4191 |
| Xmax | 30mm | 30mm |
Enclosure Specifications
| Sealed Enclosure | 1.0 cu ft |
| Ported Enclosure | 2.0 cu ft |
| Recommended Tuning | 35Hz |
| Recommended Port Area | 32 sq in |
| Displacement | 0.21 cu ft |
| Depth | 8.43″ |
| Outside Diameter | 12.84″ |
| Cut-Out | 11.2″ |
| Physical Dimensions | Download |
Specifications
| RE (Ohms) | 3.8710 | 6.0767 |
| FS (Hz) | 30.9541 | 30.9212 |
| VAS (L) | 111.7625 | 114.6901 |
| Qes | 0.5669 | 0.6572 |
| Qms | 5.6396 | 5.5116 |
| Qts | 0.5151 | 0.5872 |
| Le (mH) | 3.3981 | 4.7475 |
| BL (NA) | 27.4023 | 31.4938 |
| Mms (Grams) | 565.4130 | 552.1551 |
| Cms (uM/N) | 46.7560 | 47.9807 |
| Sens (dB @ 1w/1m) | 89.4169 | 88.8733 |
| Xmax | 30mm | 30mm |
| T/S SPECS | UV.2 18" D2 | UV.2 18" D4 |
|---|
Enclosure Specifications
| Sealed Enclosure | 3.0 cu ft |
| Ported Enclosure | 4.0 cu ft |
| Recommended Tuning | 35Hz |
| Recommended Port Area | 64 sq in |
| Displacement | 0.26 cu ft |
| Depth | 10″ |
| Outside Diameter | 18.63″ |
| Cut-Out | 16.9″ |
| Physical Dimensions | Download |
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Easy Returns
Return for refund within: 30 days
Return for replacement within: 30 days
Standard Return Policy Overview
You may return merchandise purchased from Showtime Electronics for a refund or a replacement, provided that the procedures and requirements are followed. All returns require a return merchandise authorization (RMA) number. An RMA number must be issued within 30 calendar days after the date of purchase. An RMA number is valid for 14 calendar days after it is issued. Once you log in to your user account, you will be able to Request and RMA. In addition, you can also request an RMA at the bottom of our homepage. If you have any issues, please email us at sales@showtimeelectronics.com
