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U-Series v.2 12" Subwoofer

Replaces the previous generation: U-Series v.1 12" Subwoofer

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

rms watts
2000 W
impedance ohms
4 Ω
voice coil config
DVC
Thiele-Small Parameters

Measured at small signal levels per AES standards

Impedance:
Electromechanical
Fs
41.33 Hz
Re
3.84 Ω
Le
3.186 mH
BL
27.27 T·m
Q Factors
Qts
0.441
Qes
0.486
Qms
4.75
Compliance & Mass
Vas
14.76 L
Mms
358.6 g
Cms
0.0405 mm/N
Excursion
Xmax
30 mm

Parameters measured per AES2-1984 (r2003) standards. Small-signal parameters valid within linear operating region.

Compare Prices(1 retailer)
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$389.99
$399.99Save 3%
Updated 11/11/2026
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Frequently Asked Questions

What is the Sundown Audio U-Series v.2 12" Subwoofer?

The Sundown Audio U-Series v.2 12" Subwoofer is car audio equipment made by Sundown Audio.

How much does the Sundown Audio U-Series v.2 12" Subwoofer cost?

See the recorded retailer prices in the "Where to Buy" section. Prices and availability can change; confirm both with the retailer before purchasing.

Where can I buy the Sundown Audio U-Series v.2 12" Subwoofer?

The "Where to Buy" section lists retailers we have recorded carrying the Sundown Audio U-Series v.2 12" Subwoofer. Check each listing's availability and confirm warranty coverage with the retailer.

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