Sonus Faber GRAVIS I
Image source — © Sonus Faber
Model name
GRAVIS I
Frequency Response low +/- 3dB (Hz)
30
Frequency Response high +/- 3dB (Hz)
N/A
Sensitivity (dB at 1 W/1m)
N/A
Impedance (Ohms)
N/A
Has internal amplification
Yes
Power amplifier requirements (W)
250
Size (sm)
33.4 x 28.6 x 31.6
Weight (kg)
14
Official link
Powerful 12-inch dynamic head with long stroke and extremely rigid and lightweight three-layer ParaNanoCarbon sandwich diffuser, resistant to bending even at the strongest signal, which ensures dense and accurate bass reproduction. In addition, the extremely powerful and highly efficient Class AB amplifier is rated at 1800 watts at 4 ohms.
Powerful 12-inch long stroke design and extremely rigid and lightweight three-layer ParaNanoCarbon sandwich diffuser, resistant to distortion even at the strongest signal, which ensures dense and accurate bass reproduction.
The subwoofer is equipped with a 10-inch woofer with a diffuser made of impregnated paper. The diffuser is mounted on a wide rubber suspension, which ensures its rapid movement with a large amplitude. The bass is loaded onto a passive radiator. The radiator on the front panel of the subwoofer is covered with a removable safety net.
The Sonus Faber Gravis III subwoofer is made according to the classical scheme in a closed rectangular (almost cubic) case with a 10-inch driver on the side wall. This ultra-long-range speaker, with which the Gravis III showed a lower limit of 25 Hz, received a three-layer sandwich diffuser reinforced with a spatial honeycomb structure.