JBL GSB8-TN In-Ground Landscape Subwoofer – Tan

JBL GSB8 in-ground landscape subwoofer

The JBL GSB8 in-ground landscape subwoofer is designed to deliver powerful, accurate low-frequency reinforcement for outdoor audio systems, enhancing the performance of JBL GSF full-range landscape speakers in professional environments. Developed for hospitality venues, corporate campuses, retail spaces, public areas, and landscaped installations, the GSB8 provides deep bass performance while maintaining a discreet, visually unobtrusive presence.

The system delivers true subwoofer performance with low-frequency extension down to 35 Hz, ensuring rich, controlled bass reproduction for music playback and ambient sound applications. A built-in steep, multiple-slope low-pass filter provides precise frequency control, enabling smooth acoustic integration with full-range landscape speakers. This design ensures balanced sound distribution and consistent low-frequency response across large outdoor listening areas.

The premium-grade 100-watt subwoofer-band transformer supports flexible system configurations, allowing operation in both 70V and 100V distributed audio systems, as well as direct low-impedance operation. This versatility enables seamless integration into a wide range of professional audio infrastructures while maintaining stable performance and efficient power distribution.

The GSB8 features an ultra-low-profile in-ground installation design, allowing the subwoofer to be installed underground with only the audio port visible above ground. This preserves the natural appearance of landscaped environments and minimizes visual impact. The internal chamber is positioned directly beneath the audio port, reducing the risk of accidental damage from landscaping activities. Integrated grab handles simplify handling and placement during installation, while anchor points allow the cabinet to be securely fixed to blocks or anchors for long-term stability.

Constructed from durable LDPE polyethylene with color molded throughout the enclosure, the cabinet is built to withstand outdoor environmental exposure while maintaining long-term structural integrity. The JBL GSB8 is engineered for durability, acoustic reliability, and seamless system integration, making it a dependable solution for landscape audio systems requiring deep, controlled bass in a compact in-ground format.

Features of GSB8

• 209 mm (8-inch) polypropylene subwoofer driver

• True low-frequency extension to 35 Hz

• Steep multi-slope low-pass filter design

• Ultra-low-profile underground installation

• Discreet in-ground audio port design

• 70V distributed line system support

• 100V distributed line system support

• Direct low-impedance operation

• Premium-grade subwoofer-band transformer

• Optimized integration with JBL GSF speakers

• Chamber positioned below audio port

• Protection against landscaping damage

• Integrated grab handles for installation

• Anchor points for secure mounting

• Weather-resistant polyethylene enclosure

• Omnidirectional low-frequency dispersion

• Professional landscape audio integration

Specifications of GSB8