.Moving parts - Innovation

. Kompund CGF

Speaker cone engineering is looking for utopia target: light as the air, and infinitely rigid.

With very light and rigid cones cone break-up appears due to lake of damping. In another hand, the cones using additional damping treatment are heavy, which limits the speaker efficiency and transient response.


In order to keep the best of both worlds, we have developed a hybrid cone material made of Carbon and Glass fibers.

Our GF+CF cone is more rigid than any Carbon cone, lighter than most of damped cones.

Crédit photo: .Kartesian company

. dynamiK spider

The spider has be neglected by many speaker brands, considering it as the "k[mm/N]" which allow to adjust Fs[Hz] according to the existing moving mass. The strength of conventional spider isn't linear, and its variation gives rise to Fs[Hz] variation according to cone excursion.

As a consequence, the bass response depends on sound pressure.

He have developed an exclusive corrugation profile which keep constant Cms[mm/N] on the full excursion. The non-linearity measurements and the listening session show the merits of our innovation.

Crédit photo: .Kartesian company

. monoKore

Transmit accurately every single voice coil movement to the membrane is a fundamental condition for high fidelity reproduction. Use exotic and expensive material is useless if this preliminary condition isn't satisfied.

For our high-end speaker range, we use direct coupling between the voice coil and the membrane. The mechanical energy doesn't go through variable glue point, it is transmitted in a unique piece. Because mechanical lost means fidelity weakness, we prohibit it in our design.

Crédit photo: .Kartesian company

. Kompliance

The surround is a multitasking part of the speaker.

Its parameters based on the material, the shape, the size affect significantly the frequency response, and the performances.

Furthermore, it is a part of Cms[mm/N], so it must be designed in accordance with spider stiffness.

We have worked on surround material (low shore NBR) to reduce the mechanical lost, but also on the shape to perfectly match with cone profile and spider stiffness curve.

Crédit photo: .Kartesian company

. Koupled chambers

Tweeters are sealed speaker, so the roll off depends on the size of the rear chamber. Many brands have developed tweeters with rear chambers to decrease Fs[Hz] and allow lower crossover point, which is really interesting.

We have deeply analyzed how the rear chamber works, and how it affects the acoustic performances. Our .Koupled chambers solution makes the tweeter working as a speaker in a vented enclosure in low frequency. We increase the sensitivity without dome excursion.

Crédit photo: .Kartesian company