Exceptional performance
for more compact environments.

The Experience

"...dynamics and timing are so precise /.../ that the listener feels directly connected to each musician,” Alan Taffel, The Absolute Sound

The Estelon XB Mk II shares its predecessor’s qualities of impeccable audio reproduction, along with the curved-sculptural styling that is tailored to excel in a smaller listening environment. It remains true to the X-Series’ expansive soundscape delivering a precise performance.

The upgraded XB Mk II sports a redesigned crossover network, along with new cabling, that assist in the refined balance, crystal-clear clarity, and the most accurate reproduction. The perfect speaker system for those seeking to experience thrilling sound throughout the whole frequency spectrum.

  • The 158mm (6.25”) mid-woofer has a ceramic membrane providing a very clean impulse response with very low total harmonic distortion (THD) and intermodulation distortion (IMD) products. Through continuous improvements and developments, the right amount of damping is used to maintain a linear frequency response.

    The 25mm (1”) inverted dome alpha corundum tweeter is made by Accuton. Typical to high-quality hard domes, the impulse response is outstanding, the distortion is kept very low, and the first break-up modes are pushed out of the audible range.

  • The woofer works in a bass reflex chamber. The port is on the rear side of the cabinet eliminating the influences of the midrange frequencies.

    The 220 mm (8.7”) ceramic sandwich woofer has been designed by Accuton engineers. It has an extremely stiff and lightweight membrane along with a very long linear excursion. It can reproduce a truly deep, accurate, and effortless bass. The combination of the cabinet design, construction, woofer and its positioning, crossover, and mating with the room acoustics and associated electronics has been said to sound like “live bass”, which is the result of meticulous engineering.

  • The speaker cabinet has no parallel walls. Most of the walls are curved so the standing waves in the cabinet are spread out, minimized in magnitude. In addition, the curved shape aid in rigidity. The combination of the heavy and rigid marble-based material, curved shapes and internal bracing, suppresses the cabinets’ inherent resonances to almost non-existent levels. The drivers have everything to support them to perform their absolute best.

    The soft curves of the cabinet eliminate the effects of reflective diffraction from the drivers’ output, thus the directivity of the speaker is homogenous and wide.


  • Type

    3-way passive loudspeaker, bass reflex

  • Drivers

    Woofer: 220 mm (8.7") Accuton, ceramic sandwich dome
    Mid-woofer: 158 mm (6.25") Accuton, ceramic membrane
    Tweeter: 25 mm (1") Accuton, ceramic inverted dome

  • Internal wiring


  • Frequency response

    22 - 30 000 Hz

  • Power rating

    150 W

  • Nominal impedance

    6 Ω (min 3,1 Ω at 51 Hz)

  • Sensitivity

    87 dB / 2,83 V

  • Minimal amplifier power

    30 W

  • Dimensions

    Height: 1260 mm (49.5")
    Width: 420 mm (16.5")
    Depth: 590 mm (23")

    Net weight: 69 kg (150 lbs.) per piece


    Marble based composite

  • Recommended room size

    25-50 m² (270-540 ft²)

  • Finish

The Awards