SKU: 80299421875

Sundown Audio - U-Series v.2 12"

Sale price$405.00 Regular price$450.00
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Description

Sundown Audio - U-Series v.2 12"2000 Watts RMS 4000 Watts Peak 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

  • 2000 Watts RMS / 4000 Watts Peak
  • 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
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

Dimensions

Shipping Notes
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Exchange/Return Notes
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SKU: 80299421875

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GinnyJ
Bozeman, US
★★★★★ 5
Bright light
Size: 9004/HB1, Size: 9004/HB1
Keeping track of longevity. Had these bulbs for a month and will try and update if they fail. Unfortunately a while ago I hit a cow, seemed to just pop up out of nowhere, the truck was rebuilt and I wanted more/better road lighting. I am using these in a Mack truck for work so they are getting used. I run at least 10 hours a day, 5+ days a week and have at least 11k miles on them since installed. Install is just like a standard bulb no special steps needed. Produce a lot of light and good patterns on high and low beam. So far I really have only had one issue with the bulbs and that is the daylight running light/DRL operation, they don't work I believe the Mack drops the voltage to slightly dim the lights when running in DRL operation and this causes the bulbs to just intermittently flash so I just run with them on all the time. This I don't believe is the bulbs fault and is more an analog vs digital issue. Therefore I'm testing the longevity of the bulbs if my truck is running they are on. Will see how they do as the days get hotter as they are in a small sealed space.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 26, 2026
T
Verified Purchase
Ted F.
Pawtucket, US
★★★★★ 5
Wow bright!
Size: H11+9005, Size: H11+9005
I have used Fahren LED headlights in two of my other vehicles so I had a baseline of what to expect, but these upgraded ones are even brighter than the ones in my other two cars. I love this brand because they are plug and Play so I have not experienced any compatibility issues. These feel high quality as I have expected due to past experience with this brand. I much prefer the bright white color of LED versus the yellowish Amber of halogens. I have been using this brand for several years now so I expect a good lifespan from this as I have experienced from other bulbs from this manufacturer. As far as value goes, the increase in visibility installing these is worth every penny and then some.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 19, 2025
D
Verified Purchase
Denis
Charlottesville, US
★★★★★ 4
Good light, but blinding
Size: H7
The light itself is good and bright and fits well, but I don't know if I installed it wrong, but the driver's side is very blinding, and I feel bad for other drivers and can't do anything about it.
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Reviewed in the United States on May 12, 2026
M
Verified Purchase
Melissa Aguilera
Boise, US
★★★★★ 5
Best product for truck
Size: H11+9005-100,000LM
Works great and very bright
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Reviewed in the United States on May 31, 2026
C
Verified Purchase
Codie Garee
Lake Worth, US
★★★★★ 4
Easy to install, extremely crisp and bright
Size: H7
My H7 Termitor Headlights are wonderful for my 2014 VW Jetta SE 1.8l turbo. Extremely bright and super easy to install since they have the exact fitting as the factory bulbs. Only thing I would have done differently is to use the adapter to maintain steady light. Whenever I'm in gear or roll the windows up or down I can see the lights dim and after I drive for a while they aren't as bright as when I first started the car. Otherwise they are great, very bright, no warm up time, and clean crisp light. They're even brighter than my factory brights (which I still have installed with the factory bulbs, can't even tell they're on with these!)
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 19, 2026

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