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Home/Equipment/Subwoofers/Sundown Audio/X-Series v.3 8" 800W X-8 Subwoofer
Sundown Audio X-Series v.3 8 Subwoofer - 800W RMS, 8-inch, Dual 2-Ohm DVC - Black pressed paper cone, high-roll rubber surround, large magnet, chrome finish.
Sundown Audio/Subwoofer/X-Series

X-Series v.3 8" 800W X-8 Subwoofer

This model has been replaced.

View the newer model: X-Series v.4 8" Subwoofer

The X-8 v.3 is pretty much THE KING of 8" subwoofers and, certainly, is one of the most popular 8s we've ever produced during its 4+ years in continuous production. It builds on the legacy of the v1 and v2 models but definitively trounces both of them in every way. The secret sauce is largely in the painstakingly FEA optimized spider and surround. It's hard to overstate the impact of proper suspension design on a subwoofer but anyone who has used the X-8 v.3 can attest that we've nailed it here. Beyond the suspension - the X-8 v.3 is built on our custom-tooled 8" frame. It represents the absolute maximum performance possible on this frame platform - nearly 10 years after tooling the frame for the SA-8 v2 we have completely maxed it out! The motor and coil are capable of ~20mm of linear x-max one-way and around 2.4" p-p before the coil leaves the gap (with a little beyond that before any physical bottom is reached). As with most of our subs it also features an aluminum magnet ID shorting ring for reduced inductive distortion as well as a few other secret Sundown tricks for distortion reduction! It's safe to say that the 800-watt RMS rating is quite conservative.
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Specifications

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

Measured at small signal levels per AES standards

Impedance:
Electromechanical
Fs(Resonant frequency)
49.6 Hz
Re(DC resistance)
6 Ω
Le(Inductance)
3.41 mH
BL(Force factor)
30.7 T·m
Q Factors
Qts(Total Q)
0.36
Qes(Electrical Q)
0.4
Qms(Mechanical Q)
3.32
Compliance & Mass
Vas(Equiv. volume)
3.2 L
Mms(Moving mass)
203.5 g
Cms(Compliance)
0.05 mm/N
Excursion
Xmax(Linear excursion)
19 mm
Sensitivity
SPL0(1W/1m)
81.8 dB
Power Handling
Pe(RMS power)
800 W

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

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Compare Prices(1 retailer)
Sparked Innovations
Sparked InnovationsBest Price
Available
$549.99
Updated 3/24/2026
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Frequently Asked Questions

What is the Sundown Audio X-Series v.3 8" 800W X-8 Subwoofer?

The Sundown Audio X-Series v.3 8" 800W X-8 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 X-Series v.3 8" 800W X-8 Subwoofer cost?

The Sundown Audio X-Series v.3 8" 800W X-8 Subwoofer typically sells for $312 to $390 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 X-Series v.3 8" 800W X-8 Subwoofer?

You can purchase the Sundown Audio X-Series v.3 8" 800W X-8 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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