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  • SubTerrain™ underground subwoofer, 12" Driver, 400 watts, 4Ω/70V switchable. Sold each.
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TruAudio Elements 12" Underground Subwoofer

Call for pricing 318-751-3598
20.00 LBS
Usually ships within 2 days depending on stock
Free Shipping

Product Description


TruAudio’s SubTerrain subwoofers are designed to do exactly what its name intends - Be buried in the ground.

This form factor allows for the outdoor listening experience to now include deep hearty bass while effortlessly blending into any landscape.

Tech Tip: Before burying the sub, put gravel at the bottom of the hole for drainage, leveling and to help prevent freezing.


Bigger Volume
Maximum Airflow Port Tube - unique flared design at both ends optimizes airflow to generate maximum sound. 

Deeper Bass
Balanced Dual Air Chambers - tuned specifically for its Bandpass enclosure and properly balanced to enhance performance

of 12” injected poly driver for deep, rumbling bass. 

Greater Sound Dispersion 
Exclusive Soft Curve Cap - projects sound throughout the surrounding area rather than sending it back into the ground like other underground subs.


  • Hole Dimensions L: 27.0" (686mm) x W: 24.0" (610mm) x D: 25.0" (635mm)
  • Color Green
  • Speaker Type Underground subwoofer
  • Enclosure Fiberglass reinforced plastic
  • Finish Dimensions L: 24.7' (624 mm) x H: 21.6" (548mm), 33.7" (855mm) (with port)
  • Driver 12" injected polypropylene
  • Power 500 watts
  • Impedance 4 ohm/70v
  • Sensitivity 89dB
  • Frequency Response 28-90 Hz +/-3db


Product Videos

Outdoor Package Install (03:26)
  • Outdoor Package Install

Warranty Information


All outdoor speakers and subwoofers have a limited 5 year warranty. This warranty includes 5 year parts and repair labor on all components. The warranty extends only to the original purchaser of the product and not to any subsequent owner. TRUAUDIO’s obligation under these warranties is limited to repairing or replacing any component found defective in material or workmanship under normal conditions of use with an equal and/or current product. These warranties shall not apply to products which have been abused, modified, or disassembled. Products to be repaired or returned under this warranty must be returned to the factory through an authorized TruAudio dealer with all transportation and insurance charges prepaid.

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