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Home/Equipment/Subwoofers/Sundown Audio/U-Series 8" v.1 Subwoofer
Sundown Audio U-Series 8-inch Subwoofer - Black pressed paper cone, high-roll rubber surround, dual magnet structure, push terminals - Durable black and silver finish
Sundown Audio/Subwoofer/U-Series

U-Series 8" v.1 Subwoofer

750W Watts RMS / 1500 Watts Peak Dual 2 or 4 ohm voice coils Optimized for small ported enclosures Aluminum 2.25” 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 The U Series woofer from Sundown is incredibly versatile, thriving in both competition setups and your daily driver. It features a double-stacked 9” wide ferrite magnet system and a robust top plate. It also incorporates shorting rings within the magnets and pole cap to enhance frequency response, act as a heat sink, and guide airflow. The U Series is equipped with a significantly thicker custom aluminum frame that boasts heat-dissipation ribs. The v.2 motor also includes an extended pole piece to ensure the coil remains controlled even under high stress!
Used in 0 builds
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Specifications

impedance ohms
4 Ω
voice coil config
DVC
Thiele-Small Parameters

Measured at small signal levels per AES standards

Impedance:
Electromechanical
Fs(Resonant frequency)
41.29 Hz
Re(DC resistance)
6.34 Ω
BL(Force factor)
21.45 T·m
Q Factors
Qts(Total Q)
0.431
Qes(Electrical Q)
0.519
Qms(Mechanical Q)
2.54
Compliance & Mass
Vas(Equiv. volume)
6.97 L
Mms(Moving mass)
145.2 g
Excursion
Xmax(Linear excursion)
18 mm

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

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Compare Prices(2 retailers)
Sparked Innovations
Sparked InnovationsBest Price
Available
$349.99
Updated 3/24/2026
S
Sparked InnovationsBest Price
Available
$349.99
Updated 3/22/2026
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Frequently Asked Questions

What is the Sundown Audio U-Series 8" v.1 Subwoofer?

The Sundown Audio U-Series 8" v.1 Subwoofer is a car audio equipment made by Sundown Audio. View full specifications and where to buy on this page.

How much does the Sundown Audio U-Series 8" v.1 Subwoofer cost?

The Sundown Audio U-Series 8" v.1 Subwoofer typically sells for $280 to $350 depending on the retailer and variant. Check the "Where to Buy" section for current pricing from authorized dealers.

Where can I buy the Sundown Audio U-Series 8" v.1 Subwoofer?

You can purchase the Sundown Audio U-Series 8" v.1 Subwoofer from authorized dealers listed in the "Where to Buy" section on this page. We recommend buying from authorized retailers to ensure warranty coverage and genuine products.

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