A critical issue that has limited loudspeaker performance
for the past 100 years is now resolved.
Resonance-free loudspeaker
Tomorrow’s Audio
THE AUDIO TECHNOLOGY OF THE FUTURE
In 1924, Rice and Kellogg laid the foundation for modern audio by creating the dynamic loudspeaker. However, one persistent challenge remains: the resonance frequency, which limits the sound quality and performance of audio systems. Today, we present a revolutionary and affordable solution that completely eliminates this issue through cutting-edge technology.
Imagine a speaker capable of producing pure sound, free from distortion or coloration, delivering an unmatched listening experience. Our unique invention ensures faithful audio reproduction, even at the highest volumes, while preserving the integrity of the audio signal — something that has not been achieved in the past 100 years.
We are seeking visionary engineers and bold decision-makers ready to transform the audio industry. By investing in our patent, you will have the opportunity to gain a significant edge over your competitors and offer your customers superior-quality products.
Don’t miss this unique opportunity to be part of an audio revolution. Contact us today to learn how our technology can propel your business to new heights. Together, let’s redefine the sound experience!
Graphical representation

WITH RESONANCE
Disadvantage : Below the minimum impedance at 0 degrees, phase shift issues begin to appear, also making the interaction with the amplifier complex due to the resonance. Additionally, a Doppler effect emerges, causing complications in the reproduction of midrange frequencies.
All of the issues described contribute to a reduction of energy in the low frequencies, particularly below this 0-degree point, with a potential loss of up to -10 dB across a range of one lower octave.
It will also be impossible to reproduce the fundamental frequencies in phase with their harmonics.
At the peak of the resonance frequency, a voltage feedback — depending on the coil configuration and the strength of the magnetic field — is sent back to the amplifier, which causes it to overheat and become unstable.
Therefore, with a resonant transducer, it is impossible to accurately reproduce the original sound track.

WITHOUT RESONANCE
Advantage : Low frequencies will be determined by the cone’s size and the design of the surrounding components. A variation of only a few decibels (2 or 3 dB) from the nominal value of the transducer is expected, even at very low frequencies.
All fundamental frequencies will be in phase with their harmonics, ensuring coherent, accurate, and precise sound reproduction.
The amplifier will exhibit high stability, ensuring reliable and high-performance operation.
Therefore, a resonance-free transducer guarantees unmatched sound quality.
How we TOOK the measureS
During the measurements process, we used the MLSSA system.
PATENT PENDING
My invention, currently patent pending, offers a complete redesign of mechanical, magnetic, and electrical systems. Unlike previous attempts, it does not rely on an external processor or an inverted input signal to try to cancel the resonance frequency. It achieves efficiency comparable to that of a conventional loudspeaker while maintaining minimal impedance, which ensures phase error–free performance and optimal interaction with the amplifier.
This invention is compatible with all sizes of dynamic loudspeakers but is not suitable for planar or ribbon-type drivers. It delivers significantly more uniform low-frequency response and fundamental frequencies free from phase errors, thus ensuring a perfect alignment with harmonics and subharmonics.
Appplications

STUDIO AND AUDIOPHILE
A loudspeaker without a resonance frequency offers exceptional sound fidelity, enabling accurate reproduction of recordings. By eliminating harmonic distortion and phase errors, it ensures a clear and precise listening experience. These loudspeakers reproduce low frequencies exactly as the engineer intended in the final mix, while preserving the stereo image for precise instrument localization—no more averaging to try to achieve a decent sound.
Thanks to this technology, mixing becomes easier for the engineer, who no longer needs to cross-check with multiple pairs of monitors. Moreover, it reduces listening fatigue, allowing for longer, more comfortable sessions.
This breakthrough is sought after by sound engineers and audiophiles who truly want to hear what the artist intended to deliver.

CINEMA
A loudspeaker without resonance would deliver much clearer and more precise dialogue, ensuring perfect intelligibility and a well-balanced relationship between fundamental frequencies and harmonics. This would result in a more natural and enjoyable listening experience.
The 3D audio impression offered by today’s films would become significantly more immersive and impactful.
Additionally, the low frequencies would sound more musical and lifelike, allowing us to explore sub-20Hz frequencies with ease—while still being easy for the amplifier to handle.

VIRTUAL REALITY
In the near future, virtual reality will play a major role in our daily lives. In this context, the integration of a resonance-free loudspeaker will become essential. Indeed, the resonance produced by a standard speaker would be unacceptable and incompatible with the need for realistic and accurate sound.
A loudspeaker specifically designed to completely eliminate resonance will enable a truly immersive audio experience, where every sonic detail is reproduced faithfully, without distortion.
This technological breakthrough will be crucial to ensuring a truly authentic virtual reality experience, like in the real world.

HIGH-POWER SYSTEM
With a traditional loudspeaker, in the low-frequency range—specifically below the resonance frequency—the frequency response can never be in phase and will have a complicated interaction with the amplifier. Moreover, although the resonance peak is very prominent, it rarely exceeds the driver’s own efficiency. Around its resonance frequency, the driver behaves erratically, with output levels often up to 10 dB lower at certain frequencies both below and above the resonance point. This results in a less musical output, high distortion, and phase misalignment with the harmonics.
In contrast, the same driver without resonance will exhibit a much more linear response while maintaining the integrity of the fundamental frequencies. The absence of phase error and the near-perfect interaction with the amplifier—thanks to the driver’s stable impedance—will promote much greater linearity and allow for a significantly smaller cabinet size. This represents a major advantage in terms of transport and system handling.

Car Audio
Enhanced sound quality: Resonance-free loudspeakers offer more accurate and clearer sound reproduction, significantly improving the listening experience. This is achieved through stable interaction with the amplifier and a faithful rendering of the original musical work, while also providing better bass linearity—even without a processor.
Less distortion: These speakers reduce distortion that can occur at certain frequencies, enabling higher audio fidelity even at elevated volumes.
Reduced interference: The design of these loudspeakers minimizes interference caused by other elements within the vehicle cabin, such as door or chassis vibrations, resulting in a more immersive and enjoyable listening experience.
In short, resonance-free loudspeakers significantly enhance the in-car audio experience by delivering superior sound quality, minimizing unwanted noise, and achieving performance levels never before reached.

REDISCOVER MUSIC
Imagine a sound of unmatched clarity and precision. Thanks to the absence of resonance, this invention guarantees optimal phase coherence, ensuring a perfectly balanced frequency response. This allows for faithful reproduction of every musical nuance, where no frequency dominates, preserving the full integrity of the audio content.
Traditional loudspeakers, affected by unwanted resonance frequencies, generate distortions that degrade sound quality. In contrast, our revolutionary technology delivers an authentic reproduction of the original recording, enabling an exceptionally accurate sonic perception.
Furthermore, pure sound offers enhanced spatialization of instruments and vocals, enriching the overall listening experience. This balanced sound is also less fatiguing for the listener, allowing for longer, more comfortable sessions—making listening more enjoyable and immersive.
In short, rediscovering your favorite music through a resonance-free loudspeaker can unveil new nuances and unsuspected tonalities. You’ll be able to fully appreciate the richness and complexity of musical works you thought you knew. Additionally, the absence of unwanted resonances makes it easier to integrate your system into any listening environment.
Welcome to a new audio world—where every note matters!