EXTREME
The Ultimate
Loudspeaker
Experience
Emotionally immersive sound, groundbreaking engineering, and sculptural design in a fully adjustable high-end loudspeaker.
The Ultimate
Loudspeaker
Experience
Emotionally immersive sound, groundbreaking engineering, and sculptural design in a fully adjustable high-end loudspeaker.
What Makes It Special
Through advanced engineering and meticulous craftsmanship, the Estelon Extreme Mk II blends art and science to deliver a life-like listening experience that adapts to any acoustic space.
- Height-Adjustable Architecture: Upper module moves 300 mm for ideal soundstage alignment.
- Diamond Tweeter & Accuton Drivers: World-class CELL technology drivers with extreme precision.
- Symmetric Driver Loading (SDL): Controlled, phase-accurate, room-filling bass.
- Room-Aware Design: Engineered for seamless integration with complex acoustic spaces.
- Sculptural Cabinet: Non-box, curved shape eliminates resonance and internal reflections.
- Remote-Controlled Adjustments: User-tuned sound optimization with effortless control.
Refined by Nature and Engineering
- Crafted from a proprietary marble-based composite — dense, resonance-free, and acoustically ideal.
- Curved, seamless cabinet with no parallel walls for pure sound reproduction.
- Weighing 250 kg, each unit delivers stability for both subtle micro-details and dynamic bursts.
- Available in gloss, matte, and fully customized finishes.
- Hand-polished over several weeks using a 12-layer paint process.
Acoustic Performance –
Core Technologies
Room Integration &
Soundstage Optimization
- Woofers positioned near the floor to enhance low-frequency response and reduce standing waves.
- Midrange and tweeter drivers are elevated for improved imaging and spatial clarity.
- Drivers mounted on a curved front panel to preserve time alignment and dispersion accuracy.
Cabinet Design &
Internal Chambers
- Separate internal enclosures for each driver eliminate interference.
- Advanced dampening materials and chamber shapes prevent resonances and unwanted coloration.
Tweeter Adjustment &
Precision
- Motorized camshaft system allows 5-step depth tuning of the diamond tweeter.
- Curved baffle and suede-covered foam ring reduce cabinet diffraction and enhance imaging.
Bass Reflex & SDL
Technology
- Rear bass reflex tunnel with internal dampening minimizes turbulence.
- Dual 11″ woofers operate symmetrically for clean, distortion-free bass output.
Upper Module
Height Adjustment
- Remote-controlled upper module moves up to 300 mm for precise room adaptation.
- Linear actuator ensures exact, repeatable positioning with built-in safety.
Each speaker features a
carefully matched driver
array by Accuton.
- 2 × 250 mm (11″) CELL aluminium sandwich woofers (custom design by Accuton)
- 1 × 250 mm (11″) CELL aluminium sandwich mid-woofer (custom design by Accuton)
- 1 × 168 mm (7″) CELL ceramic membrane midrange (Accuton)
- 1 × 25 mm (1″) CELL diamond tweeter (Accuton)
These drivers work together to deliver coherent sound staging, realistic dynamics, and effortless musical flow.
Crossovers & Signal Purity
Side view depicting the curved front panel of Estelon Extreme Mk II
At the heart of the Extreme Mk II’s seamless performance lies a crossover network crafted with the utmost precision. Each filter is meticulously designed to integrate the drivers in both time and frequency domains, preserving the speaker’s tonal integrity and dynamic agility.
To achieve this, we use only the highest-grade components: SESGO capacitors, precision thick-foil and Supreme resistors, Mundorf inductors, and Goertz flat foil coils, among others. Each part is carefully selected and paired through rigorous measurement and listening, ensuring minimal loss and maximum synergy.
Our crossover circuits are housed in isolated chambers within the cabinet, protecting them from vibrations and microphonic effects. We also employ a proprietary flat foil direct coupling technique. This innovative design routes the signal through a central conductor — a star-grounded layout optimised to preserve signal integrity from crossover to driver terminals.
Each component is hand-soldered using premium solder, with the shortest possible cable runs throughout. This obsessive attention to detail allows the Extreme Mk II to deliver unparalleled resolution, timing, and control — ensuring that what reaches your ears is as pure as the original performance.
Side view depicting the curved front panel of Estelon Extreme Mk II
Technical
specifications
1 × 250 mm (11″) CELL aluminium sandwich mid-woofer (custom design by Accuton)
1 × 168 mm (7″) CELL ceramic membrane midrange (Accuton)
1 × 25 mm (1″) CELL diamond tweeter (Accuton)
Width: 690 mm
Depth: 820 mm
Net weight: 250 kg per loudspeaker