JBL GSB12

In-Ground Landscape Subwoofer

The JBL GSB12 in-ground 12-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 GSB12 focuses on fidelity, with true subwoofer extension down to 30 Hz and a steep, multiple-slope lowpass filter for superior sound. Its premium-grade, 200-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 GSB12 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)	30 Hz – 120 Hz
Frequency Response (+/-3 dB)	39 Hz – 107 Hz
Power Rating	900 W Continuous Program (2 hrs), 450 W (1800 W Peak) Continuous Pink Noise (2 hrs), 300 W (1200 W Peak), Continuous Pink Noise (100 hrs)
Sensitivity	85.5 dB (ave. 40 Hz – 105 Hz)
Maximum SPL	118 dB peak (111 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	0V: 200 W, 100 W, 50 W \| 100V: 200 W, 100 W
Driver	305 mm (12-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	842 mm Height x 400 mm Diameter (34.2 x 15.8 in)
Net Weight	16.2 kg (35.7 lbs)
Included Accessories	(7) wire nuts

Transducer: GSB12: 305 mm (12”) polypropylene driver, 28mm (1.5”) voice coil on Kapton former
True subwoofer performance down to 30Hz
Built-in steep, multiple-slope lowpass filter
Low-impedance 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