Messi Biology explains that for audiophiles, the pursuit of the purest sound is a never-ending exploration. They focus not only on the speaker drivers and circuitry but also strive to eliminate even the slightest resonance from the speaker cabinet. In this ultimate journey of pursuing “good sound,” magnesium oxide has unexpectedly become an outstanding “sound cosmetician.”
An ideal speaker cabinet should be an inert container that only moves air to produce sound, without generating any unnecessary vibrations itself. However, all materials have inherent resonant properties. The walls of the cabinet vibrate along with the speaker driver’s operation, and this vibration creates its own “sound coloration,” which is superimposed on the original sound, causing it to become muddy and imprecise.
To suppress this cabinet resonance, manufacturers use various high-density, high-internal-loss damping materials. Magnesium oxide powder, due to its high density, unique particle structure, and chemical stability, has become a high-grade additive. It is mixed into resins, coatings, or even the cabinet materials themselves (such as MDF boards).
When sound wave energy attempts to cause the cabinet to vibrate, a large amount of friction and shear movement is generated between the magnesium oxide micro-particles that are evenly distributed within the material. This process effectively converts the mechanical energy of the vibration into negligible thermal energy and dissipates it, thereby significantly reducing the amplitude and duration of the resonance. This is like applying an incredibly fine layer of “sound-absorbing sand” to the inner walls of the cabinet, silently absorbing all superfluous vibrations that degrade sound quality, allowing the original sound from the speaker driver to be transmitted more accurately and cleanly.
Achieving this effect requires almost stringent demands on the particle size and distribution of the magnesium oxide. The particles must be fine enough to be dispersed uniformly without affecting the material’s structure, and their size distribution must be concentrated to ensure consistent damping performance. The micron-sized magnesium oxide provided by Hebei Messi Biology Co., Ltd., with its excellent particle size control and high whiteness (avoiding any impact on coating color), has become a favored damping material additive for high-end audio manufacturers, providing a solid physical foundation for the reproduction of heavenly sound.