Borresen Acoustics Børresen Z3

If you love transparency and bass

The Børresen Z3 Cryo Edition speaker has two 8” bass drivers, which are both located closer to the room floor and therefore, acoustically much better integrated into the room. The enhanced dynamic and deep bass range creates an outstanding musical transparency punctuated by a rock solid bass.

Technologies and Components

Cryogenic process

Extreme treatment, huge improvement. Cryogenic treatment of all metal components of the loudspeaker results in a further significant improvement in conductivity – unleashing the finest and most subtle musical details. When metal components undergo cryogenic processing, they are subjected to extreme cooling. In the wake of this process, the crystal structure of the metal contracts more and more. Alloying elements are pushed out of the grain structure of the metal, which now becomes very similar to a monocrystal. These structural changes in the metal have a profound effect on its audio properties, resulting in an increase of conductivity by 6-8%.All metal components in the M-series undergo cryogenic treatment. The cryogenic processing cycle requires a 3-day-time window. Within the first 24 hours, the metal undergoes a cooling process from room temperature to cryogenic temperatures. During the second 24 hours, the metal parts are held at temperatures around -196°C (-321°F) before the temperature, within the next 24 hours, returns gradually to room temperature. The gradual cooling and heating is critical to avoid any thermal stress. The process strengthens and compresses the grain structure of the metal components and reduces inherent residual stress that occurs when metal solidifies from its liquid phase to a solid phase.

The Børresen tweeter

Børresen RP94 Ribbon Planar TweeterElaborate 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.

Membrane – Bass/midrange

Impressing stiffness to weight ratio. The Børresen membrane consists of a composite of two layers of very thin carbon on both sides of a 4 mm Nomex honeycomb core. This composite structure – like the one used in formula 1 type of racing cars – provides the ultimate combination of stiffness to weight ratio. The exceptionally low weight of only 5.5 grams allows a very high acceleration factor in the driver, resulting in both outstanding resolution and higher efficiency.

Magnet system – Bass/midrange

Conventional principle, unconventional performance. With the invention of the patented iron-free driver system in the 0-series, Børresen Acoustics came to realize that it is possible to reduce induction to an amazing 0.04 mH, which is approximately 10 times lower than that of common driver systems. The challenge for manufacturing the Z-series was to design a new, but less costly driver system with significantly reduced induction. As a result, Børresen Acoustics developed a driver with an 8 mm voice coil and an induction of only 0.06 mH. By linearizing the magnetic field, the driver is less affected by the actual movement and is more easily controlled by the amplifier.

Crossover Z-series

Exclusive components and stability. The Z-series is fitted with a parallel crossover configuration using the same exclusive components from the 0-series. This ensures a very mechanically stable crossover, which minimizes its own resonance.

Ansuz feet

Resonance control option.The adjustable feet of the ground cross plate are designed to be placed on Darkz resonance control separated by 3 titanium balls. Ansuz Darkz have been designed to ensure a distinctly better mechanical grounding to the floor.

The design

Development Spin off.The design of the Z2 and Z3 models are spin offs from the development of the 0-series. These speakers are equipped with the large 8” inch bass drivers placed closer to the floor. Since the speakers are now acoustically much better integrated into the room, the bass drivers can deliver the music with a remarkably deep and tight bass.