JBL Professional 8" in-ground subwoofer, grn, 1 pc
JBL Professional 8" in-ground subwoofer, grn, 1 pc is backordered and will ship as soon as it is back in stock.
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JBL Professional 8" in-ground subwoofer, grn, 1 pc
The JBL GSB8 is an in-ground 8-inch landscape subwoofer designed to deliver deep, accurate bass that enhances outdoor sound systems in hospitality, corporate, and retail environments. Perfectly paired with JBL GSF full-range landscape speakers, the GSB8 extends low-frequency response down to 35 Hz, ensuring rich, full-range sound across lawns, gardens, and outdoor entertainment areas.
Engineered for fidelity, the GSB8 incorporates a steep, multiple-slope lowpass filter for clean and natural bass reproduction. It features a premium-grade, 100-watt subwoofer-band transformer, making it highly versatile for both 70V/100V distributed audio systems or low-impedance direct operation. This adaptability makes it suitable for a wide variety of outdoor commercial installations where robust sound performance is required.
The GSB8 is built with award-winning industrial design that blends seamlessly into landscaped environments. Installed underground with only the discreet audio port visible, it maintains a low profile without compromising performance. Its chamber is oriented directly beneath the audio port, protecting it from accidental damage during landscaping activities—a common issue with side-located designs. For added convenience, the unit includes grab handles for easy handling and anchor points for secure installation to blocks or anchors.
Durability is central to the GSB8’s design. Constructed from weather-resistant LDPE polyethylene with a minimum 6 mm wall thickness, it is built to withstand harsh outdoor conditions while maintaining reliable performance. Available in hunter green or tan finishes, the GSB8 blends naturally with various landscapes. From hotels and restaurants to public spaces, shopping complexes, and theme parks, the JBL GSB8 delivers legendary JBL sound with powerful bass for any outdoor installation.
Features
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8" polypropylene driver with 2" voice coil on glass fiber former
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Subwoofer extension down to 35 Hz with steep lowpass filter
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Compatible with both low-impedance and 70V/100V systems
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Complements JBL GSF full-range landscape speakers
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Award-winning, ultra-low-profile design installs underground
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Chamber positioned directly below port to prevent landscaping damage
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Grab handles for quick installation and anchor points for stability
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Weather-resistant LDPE polyethylene enclosure with 6 mm wall thickness
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Available in hunter green or tan finishes
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Dimensions: 768 mm height x 311 mm diameter (30.1” x 12.2”)
Specifications Table
| Specification | Details |
|---|---|
| Frequency Range (-10 dB) | 35 Hz – 130 Hz |
| Frequency Response (±3 dB) | 43 Hz – 120 Hz |
| Power Rating | 500W Continuous Program (2 hrs), 250W Continuous Pink Noise (2 hrs), 150W Continuous Pink Noise (100 hrs) |
| Peak Power | 1000W (2 hrs), 600W (100 hrs) |
| Sensitivity | 84 dB (avg. 43 Hz – 110 Hz) |
| Maximum SPL | 114 dB peak, 108 dB continuous (2 hrs) @ 1m |
| Coverage Pattern | Omnidirectional |
| Nominal Impedance | 6Ω |
| Transformer Taps | 70V: 100W, 50W, 25W / 100V: 100W, 50W |
| Driver | 209 mm (8”) polypropylene cone, thermoplastic vulcanizate surround, 50 mm (2”) voice coil |
| Terminals | Bare wire with dielectric-gel-filled wire nuts, 1m cable (7 wires, 14 AWG) |
| Enclosure Material | LDPE Polyethylene, 6 mm wall |
| Dimensions | 768 mm height x 311 mm diameter (30.1” x 12.2”) |
| Net Weight | 9.3 kg (20.5 lbs) |
| Color Options | Hunter Green (RAL 6028) or Tan (RAL 7006) |
| Included Accessories | 7 gel-filled wire nuts |
Compare Table
| Model | Type | Frequency Range | Power Handling | Transformer | Best For |
|---|---|---|---|---|---|
| JBL GSB8 | 8" In-Ground Subwoofer | 35 Hz – 130 Hz | 500W Continuous Program | Yes (70V/100V) | Outdoor hospitality, retail, gardens |
| JBL GSF Series | Full-Range Landscape Speaker | 60 Hz – 20 kHz (varies) | Varies by model | Yes (70V/100V) | Outdoor full-range audio coverage |
At Creartion Networks, we do everything we can to create an excellent customer experience. This includes fast shipping and easy returns.
- Most in-stock orders placed Monday-Friday ship within 24-48 hours. General restrictions apply; please see our full shipping policy here.
- We offer a 30-day return policy from the delivery date on many products. Product restrictions apply. Restocking fees for the return of open-box items. Please see our full return policy here for more information.
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