Sonus Faber Gravis I – II


With a rich history in subwoofer design, Sonus faber brings forth the Gravis I and II, a collection that marries cutting-edge technology with the brand’s signature commitment to natural sound and Italian craftsmanship. The journey began with the Gravis FB100 in 1986, followed by the Cremona M subwoofers. Today, the Gravis collection returns to the roots of superior audio engineering.

The Completion of the Pinnacle:

Gravis I and II are the smaller companions in the Gravis Collection, meticulously designed for seamless integration into any living space. They harmonize effortlessly with various audio and audio/video systems, ensuring an optimal listening experience. Furthermore, they serve as perfect complements to their loudspeaker counterparts in the Sonetto Collection.


Experience robust, room-filling performance from these compact subwoofers.

Technical Specifications:

Available Finishes:

  • Walnut
  • White
  • Black
  • Wengè


  • Sealed box loading, downfiring active subwoofer


  • 1 x 210 mm (8″) long-throw LF unit with treated paper cone and wide rubber surround


  • High linearity Class AB
  • 150 W (nominal), 250 W (peak)

Frequency Response:

  • @ – 6dB, from 30 Hz to Fc (user adjustable)

Mains Input Voltage:

  • Factory selected, 120 Vac – 60 Hz or 230 Vac – 50 Hz


  • T4.0A (110 Vac, 60 Hz); T2.0A (230 Vac, 50 Hz)


  • 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)
  • 200 W (rated power)

Dimensions (HxWxD):

  • 334 x 286 x 316 mm including feet
  • 13.1 x 11.2 x 12.4 in, including feet


  • 14.5 Kg
  • 32 lb


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