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Sonus Faber - Gravis B1 Subwoofer Featuring THREE 10" Drivers

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Pickup currently unavailable at SkyFi 479

Sonus Faber - Gravis B1 Subwoofer Featuring Three 10 Drivers Speakers

Sonus Faber - Gravis B1 Subwoofer Featuring THREE 10" Drivers

SkyFi 479

Pickup currently unavailable

479 South Broad Street
Glen Rock NJ 07452
United States


Gavis B1 Sub from Italian Maker Sonus Faber. Very capable unit wrapped in Italian leather.

Featuring 1 x 10" Active woofer with 2 x more passive radiators of the same diameter for low frequencies you can REALLY FEEL. Connected to an internal 300W MOSFET Amp with a 2-stage power supply.

XLR and RCA inputs. Working as it should and looking great!

More from HomeTheaterReview online:

"Why three grilles? Because the B1 houses a forward-firing 10in 'active' woofer with hard paper cone, augmented on both sides by 'two passive radiators of the same diameter to obtain the most efficient and extended low frequency response.' Again, lest its detractors wish to suggest that the company is venturing here onto new ground, Sonus Faber's Extrema of a decade ago carried a passive radiator on its rear baffle.

Although the Italians state quite clearly that their first priority was performance worthy of critical two-way systems, the B1 is also magnetically-shielded for positioning near TV monitors; I'm willing to bet that 90 percent end up in home cinema installations. Inside the 14.5x16.5x16.5in (WxDxH), 'decoupled construction for resonance control' enclosure is a MOSFET based amplifier (300W peak) with 2-stage power supply. With the amp, three drivers and solid cabinetry adding up to a hefty 66lb, it feels as substantial as it looks.

On the back is a finned heat-sink and inputs for line level (RCA phono) and high-level (XLR), a rotary to set the switchable low-pass 24dB/octave filter - 38-65Hz through six positions - and a fixed high-pass filter operating above 20Hz. The amplifier possesses signal-dependent mute/start and soft start, and protection circuitry. A phase reversal switch is fitted, and there's a gain control below the crossover rotary."

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Original Box







Yes - Power

Physical Condition


Working Condition


SKU: 101649