Børresen M2 – compact loudspeakers with a grown-up sound

Danish acoustic brand Børresen Acoustics, part of Audio Group Denmark, has introduced the floorstanding speakers Børresen M2. Despite its compact dimensions, the model achieves excellent sound quality and offers a whole range of proprietary innovative developments (from a new speaker design to revolutionary methods of resonance damping). The Børresen M2 loudspeakers use drivers with 3D-printed zirconium baskets, which ensure maximum rigidity and, therefore, minimal vibrations. The topologically optimized zirconium basket perfectly combats system noise and controls system resonances.

The midrange and woofer diffusers of the Børresen M-series loudspeakers are designed to provide maximum rigidity with a minimum level of distortion. The technological requirements for these diffusers required designing, developing and assembling all components in-house. The chief developer Michael Børresen and his team managed to create new diffusers consisting of four layers laminated into a single unit: two layers of carbon fiber, a layer of aramid honeycomb spacers between them and a titanium layer with Ansuz Supreme coating. The combination of all these materials gives unique properties - for example, carbon provides the necessary rigidity in various directions (eliminating resonances above 8 kHz, while the driver system itself works at bass and mid frequencies up to 2.5 kHz). And aramid honeycomb has the best ratio of rigidity to weight in the vertical direction. Titanium also has ideal resonance control properties and maintains the natural sound of the speaker. The Ansuz Supreme coating additionally optimizes the acoustic properties of the diffuser. This coating is applied to the titanium shell using a Hi-PIMS (High Power Pulsed Magnetron Sputtering) machine to create the thinnest and most uniform zirconium layer, followed by a layer of tungsten and a final layer of aluminum nitride and chromium.

The Børresen M2 loudspeakers are equipped with three 5” IronFree5 zirconium drivers, which cover the bass and midrange. Børresen uses iron-free magnet systems in all its loudspeakers, with an inductance approximately ten times lower than that of conventional drivers. This exceptionally low inductance has now been reduced even further to an unprecedented level, approximately twelve times lower than that of conventional iron-based cores! Since silver has a conductivity that is 6-8% higher than copper, the copper pole rings have been replaced with hand-made silver rings made in-house. The RP94 ribbon planar tweeter has a sensitivity of 94 dB and, as mentioned, operates in the frequency range from 2.5 kHz. The moving membrane mass is 0.01 grams. The tweeter's high reliability allows it to handle peak levels without distortion.

The Børresen M2 speakers are available in black and white piano lacquer finishes with a recommended retail price of 175,000 euros.