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The conceptual approach of Christian Yvon can be summed up as a search of minimalism in the sense of minimum defects. Getting rid of "dross". We can only improve the quality once the faults have been removed.

The majority of manufacturers are seeking to have their speakers as generous as possible, and thus, the most able to adapt to all music and equipment.
But exactly the opposite is required, and this is the most difficult: A loudspeaker really must reproduce only the signal applied to it, without adding its own resonances, its own colorations, its own phase errors and impulse response delay.



A loudspeaker is a patchwork of components whose development requires the mastery of different technologies:
       Crossover network.
       Acoustic (standing wave treatment, resonators, diffraction, diffusion, absorption).
       Materials science, vibration damping.
       Mechanical design.
       Fluid Dynamics.


For over 25 years, Christian Yvon has worked on the problem of crossover filters.
He is the father of a technology and a filter structure called "DRIM", which is a real tool for "cutting" filter curves.
This structure allows each speaker driver to operate in a well‐defined frequency band, thanks to a triple transition slope: 6dB, 12dB and 24dB/oct.  This avoids intermodulation distortion and allows a perfect control of phase rotations.
With this tool, it is possible to compensate for peaks and dips in the frequency response. In short, to build the loudspeaker response curve.



The shape of our loudspeakers is a result of the multidisciplinary work carried on at Apertura.
If, obviously, their design is based on a quest for the ideal form and the beautiful object in the true sense of luxury craftsmanship, it is also fully in line with our work on vibration damping of the loudspeaker enclosure and the treatment of standing waves.
Contrary to a widespread belief, the use of non‐parallel walls in no way eliminates the main front/ back reflection of the cone: it just changes the envelope.
If the amplitude of the reflection is reduced, the lag is increased by the same proportion. The amount of energy remains unchanged, unless reflections are absorbed.
As for the standing waves, a significant amount of the development and internal treatment deals with the front/back reflection damping.


Apertura works only with leading suppliers and manufacturers.
In order to offer products matching our ambitions, no concessions are made in the choice of materials and components.

At all stages of assembly each of these items are checked according to our own specifications. All drive units are individually measured. Only those whose parameters comply with our standards are accepted for production. The others are rejected.



Our products combine 25 years' experience in high‐end product design and in‐house skills in the latest software:
      3D solid modeling software on work station.
       3D photo realistic rendering software.
       PCB design software.
       FEA simulation & analysis software.
       Acoustics & vibration measurement system.