Speaker systems using VCD speakers are characterized by their exceptionally fast transient response.
This rapid response makes it possible to detect even very subtle changes in the reproduced sound.
As a result, such a speaker system not only achieves high-quality sound reproduction but also functions much like a highly sensitive instrument for detecting changes in sound quality.
Taking advantage of this characteristic, we have investigated various system configurations by carefully examining differences in sound quality while modifying circuit designs, mechanical structures, and surrounding conditions. Through this iterative process, we have sought system configurations that preserve the inherent performance of VCD-structure speaker units as much as possible.

This page presents the insights obtained through these verification processes.

■Delayed Sound Degrades Sound Quality and Soundstage
The results reveal that a key factor governing sound quality and soundstage reproduction is the sound that arrives with a delay (hereafter referred to as “delayed sound”).
In this context, “delayed sound” refers to acoustic energy that reaches the listener later in time due to various causes, and is observed as temporal dispersion in the time domain.
Once energy has been radiated with such a temporal delay, it becomes an irreversible component that cannot be corrected afterward, and its effect is directly reflected in perception.
Therefore, minimizing this delayed sound is critically important for improving the accuracy of sound quality and soundstage reproduction.
In other words, the key to achieving accurate sound quality and soundstage lies in reducing this “delayed sound.”

To achieve this, the speaker system must be configured so that its time and phase response are disturbed as little as possible.
This perspective not only suggests areas for improvement in conventional speaker systems currently in use, but also represents one of the defining characteristics of VCD speakers.
In other words, the concepts presented on this page can be regarded both as conditions for bringing out the full performance of VCD speakers and as fundamental guidelines for considering sound quality and soundstage reproduction in speaker systems as a whole.