JBL GSB12 12-Inch In-Ground Landscape Subwoofer

The JBL GSB12 in-ground 12-inch landscape subwoofer provides 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 international design awards 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.

JBL GSB12 Features

• Transducer: GSB12: 305 mm (12”) polypropylene driver, 50mm (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
• Dimensions: 866 mm Height x 402 mm Diameter (34 x 16 in)

• GSB12 12-Inch In-Ground Landscape Subwoofer1
• Wire nuts7

• Frequency Range (-10dB)30 Hz – 120 Hz
• Frequency Response (+/-3 dB)39 Hz – 107 Hz
• Power Rating
  • 900W Continuous Program (2 hrs)
  • 450W (1800W Peak), Continuous Pink Noise (2 hrs)
  • 300W (1200W Peak), Continuous Pink Noise (100 hrs)
• Sensitivity85.5 dB (ave. 40 Hz – 105 Hz)
• Maximum SPL118 dB peak (111 dB continuous, 2 hr) @ 1m
• Nominal Coverage360° horizontal, 160° vertical (primary listening 10° to 50° up from ground)
• Nominal Impedance6Ω (at 6Ω tap)
• Transformer Taps
  • 70V: 200W, 100W, 50W
  • 100V: 200W, 100W
• Driver305 mm (12-inch) driver, polypropylene injection cone, thermoplastic vulcanizate surround, 50 mm (2-inch voice coil on glass fiber former
• TerminalsBare wire with dielectric-gel-filled wire nuts (1 meter single jacked cable 7 wires with 14 AWG)
• Enclosure MaterialLDPE Polyethylene plastic, 6 mm minimum wall thickness, color throughout
• ColorHunter Green (RAL 6018) or Tan (RAL7004)
• Dimensions842 mm Height x 400 mm Diameter (34.2 x 15.8 in)
• Net Weight16.2 kg (35.7 lbs)