Børresen T1 Cryo Standmount Speakers

Børresen IronFree5 driver
Our research led us to make use computer-optimized finite element designs (FEM) which allowed us to 3D-optimize the shape of our baskets, so that they don’t obstruct the airflow caused by the membrane’s rear strokes and remain acoustically invisible.

Børresen IronFree5 driver
Børresen has replaced the conventional iron-core design with four neodymium (N52) rings in a patented mirrored alignment, improving voice coil responsiveness. The Cryo version features copper pole rings that resist flux changes, enhancing clarity.

The membrane consists of three layers, laminated into a single unit: an aramid honeycomb core between two spread tow carbon fiber skins. The combination of these materials results in a moving surface with exceptional properties. Carbon fiber layers provide optimum stiffness in many different directions. The aramid honeycomb core has an excellent stiffness-to-weight ratio in the vertical direction, while graphene and boron whiskers mixed into the epoxy resin that binds the layers together increase the stiffness of crosslinks between carbon fibers. This in turn makes these bonds stronger, so the entire membrane becomes stronger and less noisy, but remains very light.

Cryogenic treatment of copper and silver rings in the T-series loudspeakers, along with internal wiring, baskets, crossover coils and tweeter improve conductivity, strength, and overall performance.

When metal components undergo cryogenic treatment, they are subjected to extreme cooling. In the wake of this process, the crystal structure of such a part contract more and more and alloying elements are being pushed out of it, so that it becomes very similar to a monocrystal. These structural changes of a metal component result in its three highly beneficial new traits. It becomes stronger, its inherent residual stress upon going from the liquid to solid phase during casting is reduced, and its conductivity is increased.

Børresen RP94 Ribbon Planar Tweeter
Elaborate finite element methods have been applied to linearize and optimize the magnetic flux field, to facilitate driver movement and to ensure high efficiency and outstanding linearity.

The efficiency of this closed ribbon tweeter amounts to an exceptional 94dB and operates from approximately 2.5 kHz upwards. The moving mass is extremely low at 0.01 grams. The totally concealed tweeter has the capacity to operate at an incredible speed, which is an absolute prerequisite to unlocking the most subtle and refined sound details of any kind of music. The enormous robustness of this tweeter allows it to handle extremely high transient peaks without any ear fatiguing breakups. No transformers are being used.

Serial configuration, coherent system.
Børresen loudspeakers are fitted with a serial crossover configuration. The reason for this is that the drivers share the very same flow of electric current in the crossover region. As a result, the electric current is phase-locked over the crossover region. Unlike standard parallel filtering, where each driver receives its own frequency and phase content, the new serial filters work by diverting out-of-band currents around the current flows, thus creating a much more coherent system. This unrivaled and innovative technological approach takes your music into a new echelon of acoustic delight.

For the crossover filter, we went to great lengths to source the very best and most sophisticated state-of-the-art components. The coils are foil types wound with paper isolation and impregnated with resin under vacuum to make them mechanically extremely solid and stable.

For crossover capacitors, we use arrays of small military spec stack-foil types. They have the best mechanical stability and lowest induction of any type of capacitor on the market (and they sound wonderful, too).

For tweeter attenuation resistors, we use metal strip types since they have, by far, the lowest noise figures and additionally, a very low thermal variation.

The Børresen T-series introduces a combination of high-gloss lacquer and real wood veneers. Thick, block-milled hardwood braces and carbon-fiber reinforcements further improve rigidity and airflow. The rear venting system allows drivers to decompress efficiently, reducing pressure buildup and distortion. This meticulous cabinet design ensures an open, spacious, and highly dynamic sound while maintaining a sleek, modern aesthetic with minimal space requirements.

The internal wiring of this speaker consists of Ansuz’s flagship cables, the Ansuz Gold Signature series. Ansuz Gold Signature cables feature by far the most innovative and most advanced audio cable technology, literally paving the way to an extremely clear, natural, and authentic sonic reproduction.

The principle is to have two coils that are wounded in each direction / a coil and a counter coil. In Ansuz words: “A double inverted coil” – the two coils are both carrying voltage – and when the Tesla coil encounters a voltage spike a counter spike is activated in order to eliminate the noise. As Noise spikes are pure voltage and carries virtually no charge, the cancelation is quite good, but not 100%. By adding more P-TC coils in parallel the performance increases. By implementing this the perceived blackness in the music improves significantly. Ansuz Tesla coils are available in various types as they complement each other in terms of strengths /weaknesses.

Impressive noise reduction.
The active square Tesla coils are embedded in our circuitry boards – one coil on the top and the counter coil on the rear side. The principle is exactly the same as the active Tesla coil and thus a great ability to eliminate noise than the passive Tesla coils.

A 3rd generation of the Ansuz analog dither technology has been developed. Analog dither technology originated in radar, where it ensured a stronger signal and thus greater range. The active Tesla coils send pulsating signals at precisely defined frequencies. These signals are sent in anti-phase. This significantly amplifies the musical signal and eliminates the background noise floor.

Analysis and studies have led to new options – and a lot of listening has resulted in this 3rd generation design which is a further optimization of the most effective frequencies which opens the soundscape even more and with the tiniest details when it comes to reproduction of the recordings.

Prevents airborne noise.
All cables and cable screens are acting like antennas for airborne RF noise which of course is a huge problem. The passive cable Tesla coil is wounded on the external part of the cable and protects the signal from absorbing the airborne RF noise. This noise is absorbed in the Tesla coil.

As there is a voltage running in the conductor itself, and it is wounded in the counter direction – this is used as the counter coil and the RF noise is then eliminated.