About: Sundown Audio SML-8 8” 300W RMS Shallow-Mount Subwoofer
The SML series is a revolutionary line of subwoofers offered by Sundown Audio. An inch shallower than our SLD series, it delivers nearly the excursion, making it an ideal choice for customers seeking an extremely shallow driver with deep bass. Designed to fit under or behind your seat, the SML series performs exceptionally well in small enclosures.
Specifications:
Enclosure Specifications:
| Thiele-Small Parameters | SML 8" D2 | SML 8" D4 |
| Dc Resistance (Re) |
3.65 Ohms | 6.85 Ohms |
| Resonance Frequency (Fs) |
40.038 Hz | 43.25 Hz |
| Equivalent Volume (Vas) | 8.028 L | 7.246 L |
| Electrical Factor (Qes) | 0.425 | 0.512 |
| Mechanical Factor (Qms) | 2.75 | 2.796 |
| Total Factor (Qts) | 0.368 | 0.432 |
| Bl Factor (BL) | 16.634 | 21.266 |
| Mechanical Mass (Mms) | 128.033 g | 124.288 g |
| Mechanical Compliance (Cms) | 123.416 uM/N | 108.954 uM/N |
| Sens (dB @ 1w/1m) | 82.8dB | 82.5dB |
| Xmax | 14mm | 14mm |

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.
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