TruAudio | SubTerrain Pro Underground Subwoofer

TruAudio SubTerrain™ Pro Series Underground Subwoofers (ST-10Pro & ST-12Pro) – Invisible Bass for Immersive Outdoor Audio

Unleash deep, powerful bass that seemingly emerges from your landscape with the TruAudio SubTerrain™ Pro Series Underground Subwoofers. These innovative, completely submersible subwoofers are engineered to deliver robust low-frequency impact while remaining discreetly hidden beneath the ground, ensuring your outdoor entertainment system is heard, not seen. Available in a 10-inch (ST-10Pro in Yellow) and a 12-inch (ST-12Pro in Green) model, the SubTerrain™ Pro Series offers upgraded design and performance for an unparalleled outdoor listening experience.

Common Features & Benefits Across the SubTerrain™ Pro Series:

• True Underground Design: Designed to be entirely buried, allowing for powerful bass extension that effortlessly blends into any landscape, leaving only a subtle, camouflaged presence at the surface.

• Seamless Waterproof Enclosure: Crafted from durable Fiberglass Reinforced Plastic (FRP), featuring a sealed and seamless design that is completely waterproof, protecting internal components from moisture, dirt, and debris for year-round reliability.

• Easy & Efficient Installation: An upgraded design provides a 40% smaller footprint than previous models, making ground installation significantly easier. Built-in handles and anchor points further simplify positioning and securing the subwoofer.

• Serviceability & Longevity: The woofer is strategically positioned on top of the internal chamber, allowing for convenient serviceability or inspection without the need to excavate the entire subwoofer enclosure.

• Robust Woofer Technology: Both models utilize a high-performance injected polypropylene woofer, ensuring durable construction and consistent, impactful low-frequency reproduction.

• Maximum SPL for Outdoor Spaces: Engineered to produce impressive Sound Pressure Levels (SPL), effectively cutting through ambient outdoor noise to deliver dynamic and clear bass.

Choose Your Power: ST-10Pro vs. ST-12Pro

TruAudio ST-10Pro – 10" Underground Subwoofer (Yellow)

• Ideal For: Medium-sized outdoor areas, patios, or as part of a distributed audio system where solid, articulate bass is desired.

• Woofer Size: 10" Injected Polypropylene

• Power Handling: 250 Watts

• Impedance: 4 Ohm

• Frequency Response: 38 Hz - 120 Hz

• Max SPL: 101 dB

• Dimensions (L x W x H with port): 15.2" (386mm) x 15.2" (386mm) x 19.8" (504mm)

• Color: Yellow (grille)

TruAudio ST-12Pro – 12" Underground Subwoofer (Green)

• Ideal For: Larger outdoor areas, poolside entertainment, or applications demanding deeper, more powerful, and expansive bass.

• Woofer Size: 12" Injected Polypropylene

• Power Handling: 400 Watts

• Impedance: 4 Ohm / 70V (Switchable)

• 70V Taps: 200 Watts (for 70V systems)

• Frequency Response: 30 Hz - 120 Hz

• Max SPL: 110 dB

• Dimensions (L x W x H with port): 17.2" (437mm) x 17.2" (437mm) x 19.8" (504mm)

• Color: Green (grille)

• Certification: IP66 Certified (ensuring high levels of dust and water resistance).

Invest in the foundation of an unparalleled outdoor audio system. The TruAudio SubTerrain™ Pro Series Underground Subwoofers (ST-10Pro and ST-12Pro) combine cutting-edge design, robust durability, and hidden power to deliver an immersive and impactful listening experience that seamlessly integrates with your outdoor living space.