BORRESEN X3 - About the Product; X-series membrane; The magnetic motor system

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X-series membrane
To ensure the typical Børresen characteristics in the X3 loudspeaker, Michael
Børresen and his team of designers and engineers were able to draw on the
development process and technology of the newly created Børresen M1 membrane.
This membrane is designed to achieve maximum stiffness with minimum
noise. The technological requirements for this unrivaled high-end membrane
performance made it necessary to design, develop and assemble all components
in-house. Michael Børresen and his team designed many different variations
and models until they nally achieved their uncompromising goal of ultimate
membrane performance for unprecedented sound quality. The result is the X3
membrane that consists of three skins laminated into a single unit: two layers of
spread carbon ber, with a layer of aramid honeycomb spacers in between.
The combination of these materials gives this membrane its unique properties.
The spread-tow carbon ber was designed to provide a skin with optimal stiffness.
This unique feature of the membrane reduces sound-disturbing vibrations and
resonances to unprecedented levels. The aramid honeycomb also has the best
stiffness-to-weight ratio in the vertical direction.A at response membrane in
terms of resonances paved the way to build a very transparent loudspeaker with a
reduced size of the magnetic motor system to optimize costs.
The magnetic motor system
In the X3 magnet motor system, Børresen uses double copper caps on the pole
rings to achieve high ux and low inductance. The use of copper caps has been
adopted from the Børresen Z-series. Copper produces a response to ux changes
- the better the counter-effect of these copper rings, the atter the inductance
curve, and the lower the electro-magnetic resonance.
In addition, lower inductance also means fewer spikes in the impedance curve.
Both result in a lower load on the amplier. To ensure high eciency, the X3 has
two pole rings. This causes the loss of some ux, which reduces eciency, but
this is compensated for by a larger magnet.
ABOUT THE PRODUCT