JBL JBL-GSB8-GN 8" In-Ground Subwoofer, Grn, 1 pc

JBL JBL-GSB8-GN 8" In-Ground Subwoofer, Green

The JBL-GSB8-GN is a purpose-built in-ground subwoofer engineered for permanent outdoor installations where weather resistance and consistent low-frequency performance are non-negotiable. Its compact footprint and integrated grab handles make deployment straightforward, while the robust construction delivers reliable bass reinforcement in fixed landscape and architectural audio applications.

Design & Durability

Built to withstand outdoor exposure, this subwoofer carries an IP66 weather rating and measures 768 mm height × 311 mm diameter (30.1 × 12.2 inches), fitting flush into ground installations without protruding visual clutter. Integrated grab handles and anchor points simplify both installation and future maintenance in field conditions.

Audio Performance

The 8-inch polypropylene woofer with 38 mm (1.5") voice coil on Kapton former delivers low-frequency extension down to 35 Hz, providing the depth needed for outdoor events and venue reinforcement. The built-in steep, multiple-slope lowpass filter integrates cleanly with line-level feeds from your console or processor. A 100W subwoofer-band transformer offers flexible operation in 6-ohm direct mode or 70V/100V multitap configurations—essential for distributed audio systems where you need synchronized bass across multiple zones.

Key Features

• 8-inch polypropylene woofer with 38 mm (1.5") voice coil on Kapton former
• Frequency response down to 35 Hz
• Continuous program power: 500W; Peak power: 1000W
• 100W subwoofer-band transformer with 6-ohm direct or 70V/100V multitap operation
• Built-in steep, multiple-slope lowpass filter
• IP66 weather rating for outdoor durability
• Dimensions: 768 mm height × 311 mm diameter (30.1 × 12.2 inches)
• Integrated grab handles and anchor points for installation
• Seven gel-filled wire nuts included for audio connections

Ideal for sound techs running permanent outdoor systems, festival grounds, or venue perimeter reinforcement where you need rock-solid bass performance and equipment that survives the elements year-round.