About: Sundown Audio X-8 v.4 X-Series 8" 1000W RMS Car Subwoofer
The X-8 v.4 is THE KING of standard cut-out size 8" subwoofers and it sets the standard for others to follow.
It builds on the legacy of the v1, v2, and v3 models but definitively out-performs all previous generations. 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.4 can attest that we've nailed it here.
Beyond the suspension - the X-8 v.4 is built on a newly revised version of our classic custom-tooled 8" frame. It represents the absolute maximum performance possible on this frame platform. 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!"
Specifications:
Enclosure Specifications:
| Thiele-Small Parameters | X-8 v.4 D2 | X-8 v.4 D4 |
| Dc Resistance (Re) | 3.04 Ohms | 6.06 Ohms |
| Resonance Frequency (Fs) | 35 Hz | 35 Hz |
| Equivalent Volume (Vas) | 22.188 L | 19.22 L |
| Electrical Factor (Qes) | 0.525 | 0.516 |
| Mechanical Factor (Qms) | 2.308 | 2.396 |
| Total Factor (Qts) | 0.428 | 0.424 |
| Inductance (Le) |
3.1785 mH | 4.6357 mH |
| Bl Factor (BL) | 22.99 | 32.182 |
| Mechanical Mass (Mms) | 369.747 g | 372.752 g |
| Mechanical Compliance (Cms) |
55.431 uM/N | 48.017 uM/N |
| Sens (dB @ 1w/1m) | 84.05 | 84.9 |
| Xmax | 22mm | 22mm |
Most products include a
limited one year manufacturer’s warranty covering defects in materials and workmanship under normal use.
Warranty coverage does not apply to improper installation, misuse, or damage caused by operation outside
manufacturer specifications.
For complete warranty terms, exclusions, and claim procedures, please visit our full
Warranty Policy page.
Most products include a
limited one year manufacturer’s warranty covering defects in materials and workmanship under normal use.
Warranty coverage does not apply to improper installation, misuse, or damage caused by operation outside
manufacturer specifications.
For complete warranty terms, exclusions, and claim procedures, please visit our full
Warranty Policy page.
Fast shipping across Canada from our Toronto warehouse. Most orders ship within 1–2 business days. Shipping costs and delivery estimates are calculated at checkout. Returns are accepted on eligible items that are unused and in original packaging within our return period. For full details, please view our Shipping Policy and Returns & Exchanges Policy.
Please note that final sale, clearance, open-box, and refurbished items are not eligible for returns or refunds. These items may only be covered under their respective warranty or exchange terms where applicable. For full details regarding open-box items, please review our Open Box Policy.
Sundown Audio
Sundown Audio
Sundown Audio
Sundown Audio
Sundown Audio
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