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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-8 can be thought of as an SA-8 v3 on performance boosters. Everything there is to love about the SA-8 v3 just with more power handling, more x-max, and more output potential.The specially designed motor is mated to a custom tooled and patented (US Patent D691595) frame which allows for a larger spider and superior clearances to nearly any other 8" woofer on the market today. The U-8 features a full 18mm of one-way linear excursion and mechanical capacity in excess of double the linear limits (around 2.5” peak-to-peak) to ensure that mechanical failures are nearly impossible. As with the SA-8 v.3 it features a surround that mimics the geometry of our large Mega-Roll v.2 surrounds for incredible linearity.

Specifications

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

Measured at small signal levels per AES standards

Impedance:
Electromechanical
Fs
41.29 Hz
Re
6.34 Ω
BL
21.45 T·m
Q Factors
Qts
0.431
Qes
0.519
Qms
2.54
Compliance & Mass
Vas
6.97 L
Mms
145.2 g
Excursion
Xmax
18 mm

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

Compare Prices(1 retailer)
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$719.99
Updated 11/11/2026
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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 car audio equipment made by Sundown Audio.

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

The "Where to Buy" section lists retailers we have recorded carrying the Sundown Audio U-Series 8" v.1 Subwoofer. Check each listing's availability and confirm warranty coverage with the retailer.

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