Sign up to our Mailing List

Sign up to our newsletter for special offers and the latest product news.

Speakers - Sonus Faber: Sonus Faber Gravis II Subwoofer

Product Options

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


Sonus faber is not new to the arena of subwoofer design and engineering. The first subwoofer project, the Gravis FB100, was launched back in 1986, later followed Cremona M subwoofers. Today, with the new Gravis collection, Sonus faber returns to its roots, incorporating cutting-edge technology while maintaining its identity of natural sound and quality Italian hand-craftsmanship.


Gravis I and II are the smaller subwoofers of the Gravis Collection.
These speakers have been designed to be easily integrated into every living environment and ideally matched with almost every kind of audio and audio/video system. In addition Gravis I and II are the perfect match for their loudspeaker siblings: the Sonus faber Sonetto Collection.

Gravis I and II deliver incredibly powerful performance from compact subwoofers.


SYSTEM: Drone cone phase-inverter loading, active subwoofer

SPEAKERS: 1 x 260 mm (10”) long throw, treated paper cone, wide rubber surround LF unit
Drone cone: 1 x 260 mm (10”) long throw, treated paper cone, wide rubber surround ABR unit

AMPLIFICATION: High linearity Class AB - 350 W (nominal), 700 W (peak)

FREQUENCY RESPONSE: @ - 6dB, from 25 Hz to Fc (user adjustable)

MAINS INPUT VOLTAGE: Factory selected, 120 Vac – 60 Hz or 230 Vac - 50 Hz

FUSE: T6.3A (110 Vac, 60 Hz); T3.15A (230 Vac, 50 Hz)

CONTROLS: Independent Master and LFE volume controls; Continuously adjustable Crossover frequency (30 to 120 Hz), slope 24 dB/oct; Signal phase inversion switch (0/180°)

AUDIO SIGNAL INPUTS: LFE (Low Frequency Effect), mono RCA plug; LINE, mono RCA plug;
HIGH LEVEL, Neutrik 4-pole Speakon©

POWER CONSUMPTION: 0.5 W (Stand-by) 450 W (Rated power)

DIMENSIONS (HXWXD): 404 x 356 x 408 mm including feet - 15.9 x 14 x 16 in including feet

WEIGHT: 21.5 Kg - 47.3 lb

Required *