SONUS FABER GRAVIS B1 SubWoofer ACTIVE Speakers 700W RMS Vintage WORK Good Look

This Sonus Faber Gravis B1 subwoofer is in perfect working and cosmetic condition delivering the deep refined low-frequency performance expected from Italy’s finest craftsmanship.

The Sonus Faber Gravis B1, introduced in 2019, is a premium powered subwoofer designed to complement the brand’s Olympica, Homage Tradition, and Reference loudspeaker lines. Built entirely in Italy, it reflects Sonus Faber’s dedication to acoustic excellence and aesthetic refinement.

The Gravis B1 uses a front-firing 12-inch long-throw woofer made of composite sandwich material, combining rigidity and low mass to produce accurate, distortion-free bass even at high output levels.

Its built-in 700-watt Class AB amplifier provides controlled dynamics, ample headroom, and musical authority, perfectly matching both stereo and multichannel systems without compromising tonal balance.

Frequency response extends from 20 Hz to 200 Hz, adjustable via onboard crossover and phase controls. The sealed-box acoustic design ensures fast transient response and superior articulation compared to ported enclosures.

The rear control panel includes low-level RCA and high-level Neutrik Speakon inputs, making integration flexible for preamplifiers, AV processors, and integrated amplifiers of all kinds.

Automatic signal sensing and standby circuitry reduce power consumption when idle, while the precise crossover adjustment (40 Hz–150 Hz) allows seamless blending with main speakers.

Cabinet construction follows the signature Sonus Faber philosophy: handcrafted curved panels, genuine walnut veneer, leather-covered top, and mirror-polished aluminum base, combining artistry with acoustic optimization.

Anti-resonant internal bracing and vibration-absorbing feet minimize structural coloration, allowing the subwoofer to reproduce clean, deep bass with natural decay and realism.

The Gravis B1 can be paired with multiple subwoofers in large systems using phase alignment tools to ensure uniform room response. The result is a truly musical subwoofer that supports rather than overwhelms.

Dimensions are approximately 45 cm (H) × 45 cm (W) × 52 cm (D) and weight is around 30 kg, reflecting the solidity and craftsmanship typical of Sonus Faber’s high-end creations.

Every unit is meticulously hand-tested in Vicenza, Italy, ensuring flawless performance and exceptional reliability over time.

Note:

Includes professional double-boxing and secure worldwide FedEx shipping. Voltage and plug type configured for your destination before dispatch.

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Purchase this Sonus Faber Gravis B1 Subwoofer from TechnoGold Audio & Vintage Marbella, specialists in high-end vintage and modern audio with over 40 years of experience in the field. Each item is carefully inspected, tested, and guaranteed to meet factory standards.

We provide expert worldwide shipping, safe packaging, and detailed after-sales support. Our workshop performs full functional checks and calibration to ensure every product performs flawlessly upon arrival.

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