Features
The SW12A is a powerful 500W 12” car audio low frequency subwoofer driver, available in a single 4 ohm configuration. It features a high quality 1” thick magnet assembly and a 2” high power coil which delivers tremendous low frequency output in compact enclosures.
The aluminum cone and dust cap provides tight bass response and aids the pole vent with cooling to ensure reliability. Push terminals are provided to ensure a secure connection.
Physical Specifications
| Overall Diameter (inches) | 12.25 |
| Mounting Diameter (inches) | 11.25 |
| Mounting Depth (inches) | 5.63 |
| Cone Material | Aluminum |
| Dust Cap | Aluminum |
| Frequency Range (Hz) | 25-150 |
| Voice Coil Diameter | 2” |
| Net Weight (lbs) | 18 |
Recommended Enclosures
For musical listening, a 1 cu. ft. (28 litres) net sealed enclosure is recommended.
For higher output, a 1.75 cu. ft. (49 litres) net ported enclosure with a single 4” diameter port, 10” long is recommended.
When using multiple subwoofers in a common enclosure, multiply the required volume by the number of subwoofers. Additionally, in the case of ported enclosures, use one port (as specified above) per subwoofer.
T/S Parameters
| Fs (Hz) | 29.8 |
| Qms | 8.83 |
| Qes | 0.62 |
| Qts | 0.58 |
| Vas (Litres) | 49.2 |
| Xmax (mm) | 18 |
| SPL 1W/m (db) | 85.1 |
| Continuous Power (W) | 500 |
| Re (Ω) | 4 |
| Le (mH) | 2.74 |
| BL | 14.8 |
Usage Guidelines
- Build rigid enclosures using 3/4” MDF or thicker.
- Use the recommended power and enclosures for the most reliable operation
- Use a 33Hz subsonic filter with the recommended ported enclosure.
- Do not touch the cone while the speaker operates as this damages the cone
- Ensure that all enclosures are securely fastened to the car before driving to prevent damage occupants or equipment.
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