JBL GSB12 In-Ground Landscape Subwoofer
The GSB12 is an in-ground landscape subwoofer. Nominal coverage is Omnidirectional. Frequency range is 30 Hz - 120 Hz. JBL rates it at 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). Maximum SPL at 1 m is 118 dB peak (111 dB continuous, 2 hr) @ 1m. Nominal impedance is 6 (at 6 tap).
Transformer taps are 70V: 200 W, 100 W, 50 W 100V: 200 W, 100 W. It measures 842 mm Height x 400 mm Diameter (34.2 x 15.8 in). Net weight is 16.2 kg (35.7 lbs). In the box: (7) 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) | 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 |
| Coverage Pattern | Omnidirectional |
| Nominal Impedance | 6 (at 6 tap) |
| Transformer Taps | 70V: 200 W, 100 W, 50 W 100V: 200 W, 100 W |








