JBL GSB8

In-Ground Landscape Subwoofer

The JBL GSB8 in-ground 8-inch landscape subwoofer augments the low-frequency performance of JBL GSF full-range landscape speakers to provide rich, full-range sound in lawn and garden areas of hospitality, corporate and retail spaces.

The GSB8 focuses on fidelity, with true subwoofer extension down to 35 Hz and a steep, multiple-slope lowpass filter for superior sound. Its premium-grade, 100-watt subwoofer-band transformer allows use in 70V/100V systems or can be connected for low-impedance direct operation.

This sleek, ultra-low-profile speaker—winner of the RedDot international design award for industrial design excellence—installs underground, with only the audio port visible. It’s designed to withstand the elements: Its chamber is oriented directly below the audio port to prevent accidental damage from landscaping, which can be a problem with side-located chambers. Grab handles allow easy installation and tabs secure the subwoofer to blocks or anchors.

Add the GSB8 to landscape areas of hotels, shopping complexes, restaurants, public spaces, theme parks or any application that demands legendary JBL sound with deep, rich, powerful bass.

Frequency Range (-10dB)	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 (ave. 43 Hz – 110 Hz)
Maximum SPL	114 dB peak (108 dB continuous, 2 hr) @ 1m
Nominal Coverage	360° horizontal, 160° vertical (primary listening 10° to 50° up from ground)
Nominal Impedance	6Ω (at 6Ω tap)
Transformer Taps	70V: 100 W, 50 W, 25 W \| 100V: 100 W, 50 W
Driver	209 mm (8-inch) driver, polypropylene injection cone, thermoplastic vulcanizate surround, 50 mm (2-inch) voice coil on glass fiber former
Terminals	Bare wire with dielectric-gel-filled wire nuts (1 meter single jacked cable 7 wires with 14 AWG)
Enclosure Material	LDPE Polyethylene plastic, 6 mm minimum wall thickness, color throughout
Colour	Hunter Green (RAL 6018) or Tan (RAL7004)
Dimensions	768 mm height x 311 mm diameter (30.1 x 12.2 in)
Net Weight	9.3 kg (20.5 lbs)
Included Accessories	(7) gel-filled wire nuts

Transducer: 200 mm (8”) polypropylene driver, 25mm (1”) voice coil on alluminum former
True subwoofer performance down to 35 Hz
Built-in steep, multiple-slope lowpass filter
Low-impedance ohm direct operation, plus premium-grade subwoofer-band transformer for use in 70V/100V systems
Forms a complete system with JBL GSF full-range landscape speakers
Chamber oriented directly below opening to prevent accidental damage from landscaping
Grab handles allow easy installation
Anchor points for securing cabinet to block or anchors
Available in hunter green or tan finishes to fit a wide variety of landscapes