JBL GSB8 Professional 8" In-Ground Landscape Subwoofer – Green
JBL GSB8 Professional 8" In-Ground Landscape Subwoofer – Green is backordered and will ship as soon as it is back in stock.
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JBL GSB8 Professional 8" In-Ground Landscape Subwoofer – Green
The JBL GSB8 Professional 8-inch in-ground landscape subwoofer brings legendary JBL sound to outdoor environments with rich, low-frequency performance designed for commercial and hospitality applications. As a complement to JBL GSF full-range landscape speakers, the GSB8 extends bass response, ensuring full, natural sound throughout outdoor spaces such as hotels, restaurants, retail complexes, resorts, parks, and entertainment venues.
Engineered with fidelity in mind, the GSB8 delivers true subwoofer extension down to 35 Hz for deep, powerful bass reproduction. Its built-in steep, multiple-slope lowpass filter provides smooth integration with full-range systems, while the premium-grade 100-watt transformer supports both 70V/100V distributed audio systems and low-impedance direct operation. This flexibility makes the GSB8 suitable for a wide variety of installations, from small landscaped courtyards to larger outdoor gathering areas.
The GSB8 is designed for durability, reliability, and discreet installation. Its chamber is positioned directly beneath the audio port, protecting the driver from potential landscaping damage, a common challenge with side-chamber designs. Grab handles make placement and installation straightforward, while anchor tabs provide secure mounting options. Built from rugged LDPE polyethylene with a 6 mm wall thickness, the enclosure withstands harsh outdoor environments. The hunter green finish allows the subwoofer to blend naturally into its surroundings.
Compact yet powerful, the GSB8 delivers JBL’s renowned audio quality with efficient installation features, making it an excellent choice for professionals seeking robust bass reinforcement in outdoor systems.
Features
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8" polypropylene driver with 2" voice coil on Kapton former
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True subwoofer extension down to 35 Hz
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Steep, multiple-slope lowpass filter for clean system blending
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Operates in both low-impedance and 70V/100V distributed audio systems
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Complements JBL GSF full-range landscape speakers
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Downward chamber orientation prevents accidental landscaping damage
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Grab handles for simple installation
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Anchor points for secure mounting
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Hunter green finish for natural outdoor integration
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Rugged LDPE polyethylene enclosure with 6 mm wall thickness
Specifications Table
| Specification | Detail |
|---|---|
| Frequency Range (-10 dB) | 35 Hz – 130 Hz |
| Frequency Response (+/-3 dB) | 43 Hz – 120 Hz |
| Power Rating | 500 W Continuous Program (2 hrs); 250 W (1000 W Peak) Continuous Pink Noise (2 hrs); 150 W (600 W Peak) Continuous Pink Noise (100 hrs) |
| Sensitivity | 84 dB (43 Hz – 110 Hz average) |
| Maximum SPL | 114 dB peak / 108 dB continuous @ 1m |
| Coverage Pattern | Omnidirectional |
| Nominal Impedance | 6Ω (at 6Ω tap) |
| Transformer Taps | 70V: 100 W, 50 W, 25 W; 100V: 100 W, 50 W |
| Driver | 209 mm (8") 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 | 768 mm H x 311 mm D (30.1 x 12.2 in) |
| Net Weight | 9.3 kg (20.5 lbs) |
| Included Accessories | (7) gel-filled 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 | 114 dB peak | 118 dB peak |
| Applications | Courtyards, smaller landscaped areas | Large-scale outdoor installations |
| Weight | 9.3 kg (20.5 lbs) | 16.2 kg (35.7 lbs) |
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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