Invented Essentials I Sound Passivity

Table of Contents

What makes a great high end speaker box enclosure?

The major invention coming with Aural Sculptures is a truly seamless body. Almost free-forming design opportunities and a versatile production process don’t just apply to outside shaping, but equally to the enclosure’s inside. The latter allows for optimization of inner frequency response to given signals by the drivers. Conventional speaker boxes are often constructed with predefined inner dimensions in mind and are commonly made from plain boards, resulting in typical design constraints with respect to manufacturing.

Those regular speaker boxes will possibly overreact to particular frequency ranges by significant negative feedback on the drivers’ performance in terms of accuracy and tonal balance. Taking into account attenuation and absorption of inner resonances and allowing for a required air volume to maintain the drivers’ dynamics (especially in the mid-low frequency levels), is one of many skills a high end speaker box designer needs to have. Aural Sculptures generally have a vast, almost erratic range of inner wall distances due to their extraordinary shaping. This design principle prevents distortion effects on inner frequency response and consequently reduces the negative impact on audible signals emitted by the speaker driver.

What is it with resonance and the impact on sound?

Another big obstacle every conventional speaker box has to overcome is the housing’s resonance. What is essential to the characteristic sound nuances of music instruments like violins or pianos, barely contributes to accurate music reproduction. Each single board in a box assembly resonates with a distinct spectrum, which is affected by any fixing to other box parts, resulting in complication. Such resonances interfere directly with the speaker drivers’ sound.

The larger an outside surface area of a speaker box and the more pieces used in an assembly, the higher the chance to audible disturbing effects. Distortion may exceed acceptable thresholds even in high end speaker designs, when these affected wall resonances are transmitted to floors or walls by according pedestals or mounts. Apart from any great industrial design and art there is one general conception: The more solid the walls the better. The quality of many high end speaker boxes can often be measured in weight. Finally, a massive construction reduces unpleasant mixing of inner and outer sound.

Avoiding unwanted resonance by sound passivity

Aural Sculptures do it differently. Their seamless body forms a truly three-dimensional, self-stabilizing integrated workpiece, resulting in unspecific frequency response and resonance characteristics below any significance naturally. This advantageous principle of natural sound passivity is further enhanced by corresponding materials and processes. Similar to concrete, the body comprises of a powder material composite, which causes non-directional acoustic permeability, that is at least three to four times below the amount of wooden materials. This leads to overall light-weight designs with minimum requirements for wall thickness of less than 1 cm (0.4 inches).


Sure, there have been various high end speaker boxes of timeless beauty with exquisite music reproduction qualities over the past decades in the world of hifi. You may find some of our favorites (and idols) in our hot list (coming soon). However, by leveraging the potential of additive manufacturing and design, it is Aural Sculptures by 3BE unveiling your favorite music with ease, luster and grace.

Share on facebook
Share on whatsapp
Share on twitter
Share on reddit
Share on pinterest
Share on linkedin
Share on xing
Bernd Marsch
Bernd Marsch
Bernd is a graduate engineer with an additional long-time career in business controlling and managing director plus founder of 3BE. Music has always been his passion, and now he is in the fortunate position to pump up the volume with professional excuse. At 3BE, Bernd cares for general management and quality of sound.