T+A Loudspeakers

Solitaire S 540

The absolute reference.

The Solitaire S 540 is T+A's flagship loudspeaker — a sealed three-way floorstander standing nearly 1.5 metres tall. Its 850 mm Mag850 magnetostatic line-source tweeter, driven by 64 magnets, operates seamlessly from 1.8 kHz to beyond 50 kHz. Seven oval StarStabilizer midrange drivers form a Cylinder Wave array for phase-coherent dispersion, while four side-firing 220 mm woofers in a sealed enclosure deliver controlled bass to 20 Hz. Double-sided FSR crossovers with switchable bass, mid, and treble tuning let you voice the speaker to your room.

At a Glance

●850 mm Mag850 magnetostat

●7× oval StarStabilizer midrange

●4× 220 mm sealed woofers

●20 – 50,000 Hz bandwidth

●88 dB sensitivity / 4 Ω

●Switchable voicing (bass/mid/treble)

●80 kg per speaker

●Made in Herford, Germany

Key Features

Mag850 Magnetostatic Tweeter

An 850 mm planar-magnetic line source driven by 64 high-performance magnets with T+A's Draft Control System — vanishingly low moving mass for extraordinary transient speed and extension beyond 50 kHz.

7× Oval StarStabilizer Midrange

Seven 90/60 mm elliptical midrange drivers with embossed aluminium cones form a coherent Cylinder Wave line source, delivering controlled vertical dispersion and seamless integration with the magnetostat.

4× 220 mm Sealed Bass

Four side-firing long-throw woofers in a sealed enclosure with internal bracing deliver deep, articulate bass to 20 Hz with zero port noise — the DualBass System doubled.

Switchable FSR Crossover

Double-sided Fast Signal Response crossover at 180 / 1,800 Hz with independent bass, midrange, and treble fine-tuning switches for precise room adaptation.

Technologies Inside

Cylinder Wave Technology

The room disappears.

T+A's Cylinder Wave Technology concentrates the sound field between the top and bottom edges of the loudspeaker, creating a cylindrical radiation pattern. Above and below the cabinet, effective radiation is low — greatly reducing reflections from ceiling and floor. The result is a dramatic reduction in room interaction, creating a more consistent sound regardless of room acoustics and a wider, deeper soundstage.

In a typical listening room, the earliest and most destructive reflections come from the ceiling and floor — they arrive within milliseconds of the direct sound, comb-filtering the frequency response and collapsing the perceived soundstage depth. Cylinder Wave Technology addresses this at the source rather than with room treatment. By carefully controlling the vertical radiation pattern of the loudspeaker through driver spacing, cabinet geometry, and crossover design, T+A creates a sound field that expands horizontally (filling the room with consistent coverage) while remaining tightly controlled vertically. The energy directed at the ceiling and floor is dramatically reduced, which means fewer early reflections reaching the listener. The practical effect is striking: the speakers seem to disappear, the soundstage becomes wider and deeper, and the tonal balance remains remarkably consistent whether you are standing, seated, or moving around the room. This technology is especially effective in rooms with hard floors or low ceilings where conventional speakers struggle with excessive reflections.

StarStabilizer Drivers

Piston-perfect cone motion.

T+A's StarStabilizer technology uses a star-shaped centre reinforcement with silicon powder coating and deliberately calculated conical arc geometry to prevent natural modes and self-resonances before they form. The result is a driver that behaves like a perfect piston during demanding playback — lightweight, stiff, and distortion-free across its entire operating range.

A loudspeaker cone should ideally behave as a rigid piston — moving uniformly across its entire surface. In reality, every cone material has resonant modes where different parts of the cone flex independently, creating coloration and distortion. Most manufacturers address this with heavy damping materials that suppress resonances but also reduce efficiency and transient speed. T+A's StarStabilizer takes a different approach: a star-shaped reinforcement structure is bonded to the cone, with each arm precisely calculated to break up the symmetrical resonance patterns that would otherwise form. The silicon powder coating adds controlled damping at the molecular level without adding significant mass. Combined with a deliberately calculated conical arc geometry — where the cone's curvature is optimised to direct vibrational energy toward the surround rather than allowing it to reflect back — the result is a driver that maintains true pistonic motion across its entire operating bandwidth. This means cleaner midrange, tighter bass, and more accurate transient response without sacrificing the efficiency and dynamic responsiveness that lightweight cones provide.

Solitaire Series

The pinnacle of T+A loudspeaker engineering.

The Solitaire range represents T+A's statement in loudspeaker design. The S 540 and S 530 feature the Mag850 — an 850 mm magnetostatic line-source tweeter driven by 64 high-performance magnets — paired with an array of oval StarStabilizer midrange drivers to create a true Cylinder Wave line source. The S 430 uses a Mag50 magnetostatic tweeter with the Symmetric Directivity System. All models employ double-sided FSR crossovers with switchable voicing.

Gallery

A closer look at the Solitaire S 540.

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For complete specifications and technical details, visit the official T+A website.