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.
| Type | In-Ground Landscape Subwoofer |
|---|---|
| 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 |
| Coverage Pattern | Omnidirectional |
| Nominal Impedance | 6 (at 6 tap) |
| Transformer Taps | 70V: 100 W, 50 W, 25 W 100V: 100 W, 50 W |








