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X-Series v.3 15" Subwoofer

This model has been replaced.

View the newer model: X-Series XV4 15" 3000W RMS Subwoofer

2500 Watts RMS / 5000 Watts Peak Dual 1 or 2 ohm voice coil Made for extremely deep bass Triple-stacked magnet 3” voice coil Hyper-extended pole Built to order Designed with an extended pole piece and an incredible four inches of peak-to-peak excursion, the X v.3 is engineered for ultra-deep bass and high power handling. Engineered to set a new standard in the low-frequency/small-ported-box subwoofer category, the X Series can also work in up to a 50% larger enclosure if you desire even more low-end extension. The X v.3 series differentiates itself with its incredibly linear suspension, ensuring the lowest level of bass extension in a small enclosure while maintaining extremely low levels of distortion. Notably, the v.3 series features a much larger motor structure (220mm vs. 190mm on the V.1 series), improved motor ventilation, and an all-new Mega-Roll v.2 surround, providing a more linear and rugged update to the world-famous Mega-Roll v.1 surround design. Specifications T/S SPECS X V.3 15″ D1 X V.3 15″ D2 RE (Ohms) 1.4 3.2 FS (Hz) 31.418 31.423 VAS (L) 45.907 45.924 Qes 0.486 0.561 Qms 2.562 2.801 Qts 0.409 0.468 Le (mH) BL (NA) 15.518 21.831 Mms (Grams) 423.721 423.436 Cms (uM/N) 60.563 60.585 Sens (dB @ 1w/1m) 86.5dB 85.9dB Xmax 30mm 30mm Enclosure Specifications X v.3 15 Sealed Enclosure N/A Ported Enclosure 4.25 cu ft Recommended Tuning 32hz Recommended Port Area 68 sq in Displacement 0.22 cu ft Depth 11.6" Outside Diam. 15.51" Cutout 13.83" Physical Dimensions Download Enclosure Designs .Zip File

Specifications

rms watts
2500 W
impedance ohms
2 Ω
voice coil config
DVC
Thiele-Small Parameters

Measured at small signal levels per AES standards

Impedance:
Electromechanical
Fs
31.42 Hz
Re
3.2 Ω
BL
21.83 T·m
Q Factors
Qts
0.468
Qes
0.561
Qms
2.8
Compliance & Mass
Vas
45.92 L
Mms
423.4 g
Cms
0.0606 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)
Sparked Innovations
Sparked InnovationsBest Price
Available
$749.99
Updated 6/23/2026
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Frequently Asked Questions

What is the Sundown Audio X-Series v.3 15" Subwoofer?

The Sundown Audio X-Series v.3 15" 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 15" Subwoofer cost?

The Sundown Audio X-Series v.3 15" Subwoofer typically sells for around $750 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 15" Subwoofer?

You can purchase the Sundown Audio X-Series v.3 15" 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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