Extraordinary performance, Italian sound. The Gravis I and II subwoofers, the collection representing an ideal compromise between size and performance.

Gravis I and II, the smaller models of the collection, discreet in size but powerful in performance, are the ideal compromise for middle sized listening rooms.

Thanks to their accurate and expressive bass reproduction, they can be matched with almost every kind of music and video system, but they have been specifically designed for the Sonus faber Sonetto family.

Both Sonus faber Gravis I & II use quality stamped steel-frame speaker units: Gravis I features a 8” Ultra Long Throw down-firing speaker unit along with a high current 150W Class AB amplifier; Gravis II uses a 10” Ultra Long Throw down-firing speaker unit and a 10” aluminum along with a high current 400W Class AB amplifier, alloy diaphragm passive infra-bass radiator.

Consistent with the Sonetto line’s aesthetics, Gravis I and II are available in three finishes:  Wood, Matte White and Piano Black, with the leather top embellished by the hot branded Sonus faber logo.




Closed box loading, down firing active subwoofer

1 x 210mm (8”) very long throw, treated paper cone, wide rubber surround woofer


High linearity Class AB
150 W rms, 250 W (peak)


From 25/35 Hz to Fc (user adjustable)


Factory selected, 120Vac - 60Hz or 230 Vac - 50 Hz

T4.0A (110Vac, 60Hz); T2.0A (230V, 50Hz)
Output signal short circuit
DC fault


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