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JBL GSB8 In-Ground Landscape Subwoofer

The GSB8 is an in-ground landscape subwoofer. Nominal coverage is Omnidirectional. Frequency range is 35 Hz - 130 Hz. JBL rates it at 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). Maximum SPL at 1 m is 114 dB peak (108 dB continuous, 2 hr) @ 1m. Nominal impedance is 6 (at 6 tap).

Transformer taps are 70V: 100 W, 50 W, 25 W 100V: 100 W, 50 W. It measures 768 mm height x 311 mm diameter (30.1 x 12.2 in). Net weight is 9.3 kg (20.5 lbs). In the box: (7) gel-filled wire nuts. Ordering covers Green and Tan; pick the one you need above and the SKU and price follow your choice.

TypeIn-Ground Landscape Subwoofer
Frequency Range (-10dB)35 Hz - 130 Hz
Frequency Response (+/-3 dB)43 Hz - 120 Hz
Power Rating500 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)
Sensitivity84 dB (ave. 43 Hz - 110 Hz)
Maximum SPL114 dB peak (108 dB continuous, 2 hr) @ 1m
Coverage PatternOmnidirectional
Nominal Impedance6 (at 6 tap)
Transformer Taps70V: 100 W, 50 W, 25 W 100V: 100 W, 50 W