Sonus Faber Gravis I Subwoofer

Sonus Faber Gravis I Subwoofer

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Key info

  • Dual 10-inch passive radiators for powerful bass response.
  • Class-D amplification with 800 watts of power.
  • Adjustable crossover and phase controls for optimal integration with main speakers.
  • Solid aluminum cone woofer for accurate and detailed bass.
  • Stylish Italian design with leather accents and brushed aluminum finish.

All specifications

Physical characteristics
Weight 14.5 Kg
Dimensions (HxWxD) 334 x 286 x 316 mm including feet
Speaker characteristics
Active / Passive Active
Crossover frequency 30 to 120 Hz
Amplifier Class AB
Amplifier output 150 W (nominal) | 250 W (peak)
Frequency Response @ - 6dB, from 30 Hz to Fc (user adjustable)
Drive units
Design type Sealed box loading, down firing active subwoofer
LF 8” long throw, treated paper cone

Blast from the Past

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.

The Compliance of the Pinnacle

Gravis I is the the smallest subwoofer 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.


The connection with the Sonetto family is clear: from the leather top, soft to the touch and embellished by the hot branded Sonus faber logo, to the finishes; Matte White, Piano Black, Wood and Wengé.

Speaker Unit and Sound System Gravis I

An 8 Ultra Long Throw down-firing speaker unit, along with a high current 150W Class AB amplifier allowing it accurate and expressive bass reproduction well beyond its class.

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