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, 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 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 Dimensions