Sonus Faber Gravis I Subwoofer
- Free Mainland UK Shipping on orders over £100
- Official Hi-Fi Retailer since 1973
- Usually in stock and dispatched in 1-5 working days
We offer free delivery on all orders over £100 to mainland UK. Orders under £100 are subject to a £6.50 shipping charge.
Delivery is available across mainland UK. If you are located outside mainland UK and would like a shipping quote, please get in touch before placing your order.
We aim to dispatch in-stock items as soon as possible provided that we physically have the stock - but please note that sometimes we have to order from our supplier for certain products, in which case delivery should take place within 1-5 working days of the order being placed.
Tracking details or estimated delivery timescales will be provided once your order has been processed. If there are any delays due to stock availability, we will contact you as soon as possible with the option to wait or receive a full refund.
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You can cancel your order within 14 days of receiving your goods, in line with UK distance selling regulations. Once you’ve notified us, you have a further 14 days to return the item. Please contact us by email, phone or in writing before sending anything back.
Items must be returned in original condition and packaging, including all accessories, manuals and any promotional items. The cost of return is your responsibility and we strongly recommend insuring the goods, as refunds cannot be issued for damaged or incomplete returns. If items show excessive handling, are missing components, or cannot be resold as new, a reasonable deduction may be made.
Please note that used headphones (for hygiene reasons) and custom or special-order items cannot be returned. If you need assistance arranging a return, we’re always happy to help.
Product Summary
The Sonus faber Gravis I is a compact active subwoofer designed to add greater depth, weight and realism to music and home cinema systems. As the smallest model in the Gravis range, it is a practical choice for customers who want more convincing bass performance without placing a large subwoofer in the room.
Its closed-box, down-firing design uses a 210 mm very long throw treated paper cone woofer, powered by a high-linearity Class AB amplifier rated at 150 W RMS with 250 W peak output. This combination helps the Gravis I deliver controlled, expressive low frequencies that support the main speakers rather than overpowering them.
Gravis I includes LFE, line-level and high-level Speakon inputs, making it flexible enough for both stereo and home cinema systems. Independent Master and LFE volume controls also make it easier to balance bass for music and film use without constantly readjusting the subwoofer.
With its compact footprint, elegant cabinet styling and black leather detailing, the Gravis I is a discreet way to bring deeper, more satisfying bass to a refined hi-fi or AV setup.
Key Benefits
- Adds deeper, more satisfying bass to music, films and television from a compact cabinet
- Closed-box design helps deliver tight, controlled bass that integrates well with quality speakers
- 210 mm very long throw woofer provides useful low-frequency depth without requiring a large subwoofer
- 150 W RMS Class AB amplification gives the subwoofer clean, responsive power for everyday listening
- LFE, line-level and high-level Speakon inputs make it flexible for both stereo and home cinema systems
- Independent Master and LFE volume controls allow separate bass setup for music and AV use
- Adjustable crossover, phase switching and auto on/off help fine-tune performance to suit your room
- Compact size makes it easier to position in living rooms, smaller spaces and discreet AV setups
- Elegant Sonus faber cabinet styling with black leather detailing
- 2 years standard manufacturer's warranty, extendable to 3 years on subwoofer electronic boards and drivers when registered with Sonus faber within 30 days of purchase
Technical Specifications
Subwoofer Type
- Type: Active subwoofer
- System: Closed-box loading, down-firing active subwoofer
- Driver: 210 mm very long throw treated paper cone woofer with wide rubber surround
- Decoupling System: Rubber pad
Performance
- Frequency Response: From 30 Hz to Fc, user adjustable at -6 dB
- Amplifier Type: High-linearity Class AB
- Amplifier Power: 150 W RMS, 250 W peak
- Crossover Frequency: Continuously adjustable from 30 Hz to 120 Hz
- Crossover Slope: 24 dB / octave
- Phase Control: 0 / 180° signal phase inversion switch
- Auto Switch-On / Off: Deselectable
Connections & Controls
- Inputs: LFE mono RCA, Line mono RCA and High Level Neutrik 4-pole Speakon
- Controls: Independent Master and LFE volume controls
- Mains Input Voltage: Factory selected, 120 V AC 60 Hz or 230 V AC 50 Hz
- Power Consumption: 0.5 W standby, 200 W rated power
Physical
- Dimensions (H × W × D): 334 × 286 × 316 mm
- Weight: 14 kg per unit
- Cabinet: Squared shape with black leather detailing
What’s in the Box
- Sonus faber Gravis I active subwoofer
- Power cable
- High Level Neutrik Speakon cable
- Product documentation
