About: Sundown Audio SA-8 v.3 SA-Series 8" 500W RMS Car Subwoofer
The pinnacle of low distortion ported box subwoofer technology, the SA 8-inch sub is completely custom tooled. It has a full 16mm of one-way linear excursion and mechanical capacity, exceeding double the linear limits, ensuring durability and low distortion. The v.3 update includes a new surround with linear geometry and improved thermal performance with the addition of 16 chamfered gap vents to keep high-velocity air flowing over the voice coil.
Specifications:
Enclosure Specifications:
| Thiele-Small Parameters | SAV3 8″ D2 | SAV3 8" D4 |
| Dc Resistance (Re) | 3.36 Ohms | 6.0 Ohms |
| Resonance Frequency (Fs) | 38.29 Hz | 40 Hz |
| Equivalent Volume (Vas) | 6.88 L | 7.17 L |
| Electrical Factor (Qes) | 0.324 | 0.392 |
| Mechanical Factor (Qms) | 6.31 | 4.31 |
| Total Factor (Qts) | 0.309 | 0.36 |
| Inductance (Le) |
2.08 mH | 3.32 mH |
| Bl Factor (BL) | 18.94 | 22.06 |
| Mechanical Mass (Mms) | 144 g | 126.6 g |
| Mechanical Compliance (Cms) |
120 uM/N | 125 uM/N |
| Sens (dB @ 1w/1m) | 82.79 | 82.71 |
| Xmax | 16 mm | 16 mm |

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
On orders over $200*
Competitive pricing you can trust
Most orders ship within 24 hours
With Sezzle and Afterpay