The Sonus faber Lilium is built around a distinctive dual-cabinet concept, designed to unite contrasting acoustic principles within a single loudspeaker. By separating the main enclosure from a dedicated rear chamber, it allows different frequency ranges to be handled independently, improving clarity and control. This approach reflects a broader philosophy of balancing opposing elements—power and finesse—within one cohesive design.

Lilium represents a fusion of traditional craftsmanship and advanced engineering. Developed by Sonus faber’s research team, it integrates classic materials with modern acoustic solutions, creating a loudspeaker that honours heritage while embracing innovation. The result is a design that delivers both emotional musicality and technical precision in equal measure.

The front cabinet adopts a distinctive lyre-shaped form, engineered to enhance structural strength and optimise forward sound radiation. Its curved geometry improves energy distribution while reducing unwanted resonance. This carefully sculpted structure is central to the speaker’s ability to deliver a clean, controlled and expansive soundstage.

A separate rear cabinet is devoted entirely to infra-low frequencies, incorporating reinforced internal structures to eliminate resonance and interference. This chamber works independently from the main enclosure, ensuring that deep bass is reproduced with authority while remaining tightly controlled. The result is a low-frequency performance that is both powerful and refined.

At the heart of the Lilium’s bass system is its infra-woofer, operating within a Pressure Zone Interface (P.Z.I.). This design creates a ground-coupled effect, allowing low frequencies to interact more naturally with the listening environment. Adjustable “Deep Low Control” further refines this output, enabling the speaker to be tailored to different room conditions.

Visually, the Lilium emphasises contrast through its use of materials. The front cabinet is crafted from finely grained walnut, while the rear enclosure is wrapped in leather, highlighting the separation between the two acoustic chambers. A tempered glass top plate, shaped like a lily, reveals the movement of the passive radiator beneath, adding both function and visual intrigue.

Technically, the Lilium is a 3.5-way system featuring a 28 mm D.A.D. soft dome tweeter, a 180 mm midrange driver, three 180 mm woofers and a dedicated 260 mm subwoofer. This configuration allows precise control across the full frequency range, ensuring seamless integration and a balanced, natural presentation.

With a frequency response extending from 20 Hz to 35,000 Hz and a sensitivity of 92 dB, the Lilium delivers both depth and efficiency. It is designed to handle substantial amplification, with a recommended range of 100 to 800 watts, allowing it to perform effortlessly even in large listening spaces. The result is a loudspeaker that combines scale, authority and refinement in a single, highly sophisticated design.