YB
Timeless design,
powerful
performance
The Estelon YB Mk II blends striking design with immersive, life-like sound. Featuring an asymmetric Y-shaped cabinet, it brings both aesthetic elegance and acoustic precision into contemporary interiors. Incorporating advanced technologies and the latest upgrades, the YB Mk II delivers a pure, emotionally engaging performance in any room.
Timeless design,
powerful
performance
The Estelon YB Mk II blends striking design with immersive, life-like sound. Featuring an asymmetric Y-shaped cabinet, it brings both aesthetic elegance and acoustic precision into contemporary interiors. Incorporating advanced technologies and the latest upgrades, the YB Mk II delivers a pure, emotionally engaging performance in any room.
Design Philosophy
At Estelon, we design loudspeakers that work with the room, not against it. Every element in a space influences the way music is heard. Our goal is to create synergy between the speaker and its surroundings to deliver a natural, emotionally engaging listening experience.
In typical listening rooms, low frequencies below 100 Hz behave like air pressure, spreading evenly and making it impossible to localise the source. This allows us to place the woofer close to the floor, where it couples with the surface to maximise output and efficiency. This position also helps reduce standing waves, improving bass clarity and placement flexibility.
For frequencies above 100 Hz, sound becomes more directional and sensitive to reflections. To manage this, the mid-woofer and tweeter are grouped together and positioned higher in the cabinet. This reduces interference, stabilises the stereo image, and maintains tonal balance. The midrange driver is always placed above the tweeter to further reduce colouration and improve coherence in the upper bass and low midrange.
Cabinet Technology
The YB Mk II uses a sealed-box cabinet concept, which is compact and less demanding in placement than bass reflex designs. The cabinet is formed using Estelon’s proprietary marble-based composite, shaped through advanced moulding techniques into a rigid and acoustically inert structure.
Its curved external and internal surfaces eliminate parallel walls, helping to reduce standing waves and internal resonances. The internal geometry and bracing create chambers optimised for each driver, allowing sound to emerge cleanly and without coloration. The cabinet weighs 45 kg, providing dynamic and static stability to support the drivers’ performance.
To support tonal purity across the full spectrum, we use a mix of natural and synthetic dampening materials. These materials and their placement are carefully chosen through testing and listening to ensure transparency and balance.
Driver Configuration and Placement
The YB Mk II uses a unique angled woofer design. Positioned facing inward toward the opposite speaker, this setup helps reduce midrange reflections from nearby walls in smaller rooms.
It also improves stereo image stability in the lower frequencies up to 220 Hz. In some difficult acoustic situations, reversing the left and right speaker placement can further optimise performance.
The tweeter is a 26 mm beryllium dome Illuminator model from Scan-Speak. It is extremely lightweight and rigid, producing low distortion, excellent sensitivity, and precise impulse response. Its breakup modes occur beyond the range of human hearing.
The mid-woofer is a 148 mm sliced paper cone from Scan-Speak’s Revelator series. The cone is damped with proprietary glue between the slices, reducing distortion and creating smooth frequency response. This results in clean, realistic midrange reproduction with minimal colouration.
The woofer is a 220 mm aluminium cone from SEAS. It offers excellent bass precision with a lightweight cone, long excursion, and a low-loss rubber surround that suppresses edge resonance.
Each driver is housed in its own chamber, shaped to eliminate internal resonances and reduce vibration. The tweeter and mid-woofer share an isolated upper chamber, while the woofer is positioned in a separate sealed enclosure. These chambers are fully dampened and constructed for optimal performance.
Crossover Design
The crossover components are carefully chosen for synergy and precision.
These include custom transformer-core coils, oxygen-free copper air-core coils, SESGO capacitors, and Mundorf wire-wound Supreme resistors. All parts are measured and matched in pairs for consistency.
The crossover network is constructed using point-to-point wiring with high-grade solder, and all connections are kept short to preserve signal purity. Internal cabling is provided by Kubala-Sosna, known for exceptional transparency.
The crossover is located inside the woofer chamber to minimise vibration and microphonic effects. The filters use third-order slopes between the woofer and mid-woofer, and second-order between the mid-woofer and tweeter. Crossover points are set at 80 Hz and 2 kHz.
Each crossover is tested thoroughly, both electrically and through critical listening sessions, to ensure it meets our standards before final assembly.
Technical
specifications
Mid-woofer: 148 mm sliced paper cone from Scan-Speak Revelator series
Tweeter: 26 mm beryllium dome Illuminator from Scan-Speak
Width: 332 mm
Depth: 394 mm
Net weight: 45 kg per piece