- RMS 1750 watts
- Dual 2 or 4 ohm voice coils
- Optimized for small ported or bandpass 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 aluminum frame was designed specifically for the U Series. It’s substantially thicker and equipped with heat dissipation ribs at the bottom of the frame. 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 controlled with machined, high-velocity pole channels and a series of 16 direct air-gap vents in the back plate.
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 |
