Sundown SA-Series v.3 15″ D4 Car Audio Subwoofer
1500 W RMS 15-inch dual 4-ohm cast-frame subwoofer
$519.99
Overview
The Sundown SA-Series v.3 15-inch D4 is rated 1500 W RMS / 3000 W peak on dual 4-ohm voice coils with 22 mm Xmax. Mounting depth is about 8.65 inches. Recommended sealed volume is about 1.5–2.0 cu ft; ported about 3.0 cu ft near 35 Hz with roughly 44 sq in port area.
Product details
SA v.3 15-inch power
RMS/peak is 1500 W / 3000 W with dual 2-ohm or dual 4-ohm coils. This listing is the D4 coil option on the SA-Series v.3 15-inch platform.

Dimensions
Outside diameter about 15.6″, cutout about 14.1″, mounting depth about 8.65″, displacement about 0.22 cu ft.

Enclosure guidance
Ported about 3.0 cu ft at 35 Hz with about 44 sq in port area; sealed guidance about 2.0 cu ft.
Key features
- 15-inch SA-Series v.3 subwoofer
- 1500 W RMS / 3000 W peak
- Dual 4-ohm voice coils (D4)
- 22 mm Xmax
- Mounting depth about 8.65"
- Cast aluminum SA v.3 platform
- Faraday ring motor design
- Spring-loaded terminals
Specifications
| Brand | Sundown |
|---|---|
| Model | SA v.3 15 D4 |
| SKU | SA15D4 |
| Product type | Subwoofer |
| Size | 15 inch |
| Voice coils | Dual 4 ohm |
| RMS power | 1500 W |
| Peak power | 3000 W |
| Xmax | 22 mm |
| Mounting depth | 8.65" |
| Ported volume | 3.0 cu ft |
| Port tuning | 35 Hz |
| Size | 15 inch |
Important notes
- Requires a compatible amplifier and enclosure (sold separately)
- Deep mounting depth — check clearance
- Professional installation recommended
What's in the box
- Sundown SA-Series v.3 15" D4 subwoofer
- Mounting hardware as packaged



