The JBL GSB8 in-ground 8-inch landscape subwoofer provides 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 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 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.
JBL GSB8 Features
- Transducer: 209 mm (8”) polypropylene driver, 38mm (1.5”) voice coil on Kapton 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
- Dimensions: 768 mm height x 311 mm diameter (30.1 x 12.2 in)
- GSB8 8-Inch In-Ground Landscape Subwoofer1
- Gel-filled wire nuts7
- Frequency Range (-10dB) 35 Hz – 130 Hz
- Frequency Response (+/-3 dB) 43 Hz – 120 Hz
- Power Rating
- 500W Continuous Program (2 hrs)
- 250W (1000W Peak), Continuous Pink Noise (2 hrs)
- 150W (600W 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: 100W, 50W, 25W
- 100V: 100W, 50W
- 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
- Color Hunter Green (RAL 6018) or Tan (RAL7004)
- Dimensions 768 mm height x 311 mm diameter (30.1 x 12.2 in)
- Net Weight9.3 kg (20.5 lbs)
