The JBL GSB12 Professional 12-inch in-ground landscape subwoofer is designed to elevate outdoor sound systems with deep, powerful bass and professional-grade durability. Perfectly complementing JBL GSF full-range landscape speakers, the…
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The JBL GSB12 Professional 12-inch in-ground landscape subwoofer is designed to elevate outdoor sound systems with deep, powerful bass and professional-grade durability. Perfectly complementing JBL GSF full-range landscape speakers, the GSB12 delivers full-range audio performance for commercial and hospitality venues including hotels, shopping complexes, restaurants, resorts, public spaces, and theme parks.
Engineered for fidelity, the GSB12 achieves true subwoofer extension down to 30 Hz, ensuring rich low-frequency reproduction that adds impact and depth to music and entertainment. A steep, multiple-slope lowpass filter provides seamless integration with full-range systems, while the premium-grade 200-watt transformer supports both 70V/100V distributed audio installations and low-impedance direct operation. This flexibility makes it suitable for a wide variety of professional applications.
Built with award-winning industrial design, the GSB12 is intended for long-lasting outdoor use. Its downward-facing chamber protects the driver from accidental landscaping damage, while grab handles make installation straightforward. Anchor points allow the cabinet to be securely fixed in place, and its rugged LDPE polyethylene enclosure with 6 mm wall thickness withstands tough outdoor conditions. Available in hunter green, the subwoofer blends discreetly into natural surroundings for a seamless visual appearance.
With its combination of legendary JBL audio performance, weather-resistant construction, and installation-friendly design, the GSB12 is an ideal solution for delivering immersive bass in outdoor environments where reliability and aesthetics matter.
Features
12″ polypropylene driver with 2″ voice coil on Kapton former
Bass extension down to 30 Hz
Steep, multiple-slope lowpass filter for clean system integration
Supports both low-impedance and 70V/100V distributed systems
Designed to pair with JBL GSF full-range landscape speakers
Downward chamber orientation protects against landscaping damage
Grab handles simplify installation
Secure anchor points for stability
Hunter green finish blends with outdoor landscapes
Rugged LDPE polyethylene enclosure with 6 mm wall thickness
Specifications Table
| Specification | Detail |
|---|---|
| Frequency Range (-10 dB) | 30 Hz 120 Hz |
| Frequency Response (+/-3 dB) | 39 Hz 107 Hz |
| Power Rating | 900 W Continuous Program (2 hrs); 450 W (1800 W Peak) Continuous Pink Noise (2 hrs); 300 W (1200 W Peak) Continuous Pink Noise (100 hrs) |
| Sensitivity | 85.5 dB (40 Hz 105 Hz average) |
| Maximum SPL | 118 dB peak / 111 dB continuous @ 1m |
| Coverage Pattern | Omnidirectional |
| Nominal Impedance | 6 (at 6 tap) |
| Transformer Taps | 70V: 200 W, 100 W, 50 W; 100V: 200 W, 100 W |
| Driver | 305 mm (12″) polypropylene cone, TPV surround, 50 mm (2″) voice coil |
| Terminals | Bare wire with dielectric-gel-filled wire nuts (1 m cable, 7 wires, 14 AWG) |
| Enclosure Material | LDPE Polyethylene, 6 mm wall thickness |
| Color | Pine Green (RAL 6028) |
| Dimensions | 842 mm H x 400 mm D (34.2 x 15.8 in) |
| Net Weight | 16.2 kg (35.7 lbs) |
| Included Accessories | (7) wire nuts |
Compare Table
| Feature | JBL GSB8 | JBL GSB12 |
|---|---|---|
| Driver Size | 8″ | 12″ |
| Frequency Extension | 35 Hz | 30 Hz |
| Transformer Power | 100 W | 200 W |
| Maximum SPL | 112 dB peak | 118 dB peak |
| Applications | Smaller outdoor spaces | Large-scale outdoor venues |
| Weight | 12.5 kg (27.5 lbs) | 16.2 kg (35.7 lbs) |
We offer fast and reliable shipping worldwide. All orders are carefully packaged and shipped within 1–3 business days after payment confirmation.
Standard shipping, expedited shipping and express delivery options are available at checkout. Delivery time depends on your destination country and local logistics.
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