■Detailed Roles of Each Chamber

 

① Micro Front Chamber (Front of the Driver Unit)

This is the smallest space immediately in front of the diaphragm.

The driver unit is sealed instantaneously by a Dynamic Seal Ring and a Pressure Balance Gasket, while an acoustic filter precisely smooths high-frequency peaks before transmitting the sound pressure into the 2nd chamber.

This initial chamber forms the basis for clear low-frequency reproduction and high-frequency response.

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② Main Front Chamber 

The primary space between the ear and the baffle.

It is smoothly connected to the 1st chamber through the acoustic filter, ensuring a natural pressure gradient.

The air vibrations in this space directly drive the eardrum, shaping the tonal texture, imaging, spaciousness, and natural localization of sound.

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③ Vented Buffer Chamber (Low-Frequency Pressure Control Space)

The 3rd chamber is connected to the 1st chamber through the urethane sponge ring and to the 2nd chamber through the inner side acoustic filter of the earpad, enabling controlled pressure release.

Within this chamber, two rectangular ports located at the bottom of the baffle allow efficient airflow escape, particularly for low-frequency components (approximately 60Hz and below) that exhibit large, rapid movement.

This structure effectively suppresses excessive low-frequency peaks, delivering a tight and natural low-end response.

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④ Driver Rear Chamber

The 4th chamber is fluidly connected to the 3rd chamber through the baffle’s acoustic filter and features an integrated honeycomb mesh vent behind the driver unit.

It properly releases the rear pressure of the driver while suppressing unwanted resonances, stabilizing the diaphragm motion and contributing to wideband, distortion-free high-quality sound reproduction.

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■Role of the Acoustic Filter

In the KD-Q1, multiple layers of acoustic filters made from polyester fiber are placed around the diaphragm.

These filters possess airflow characteristics that vary with flow velocity, allowing slower-moving air (primarily mid-to-high frequencies) to pass through while resisting rapid, large-amplitude movements (primarily low frequencies).

Through this mechanism, the filters achieve:

• Smoothing of ultra-high-frequency peaks

• Damping of driver-specific mid-high frequency resonances

• Suppression of high-frequency leakage from the rear side

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By optimizing airflow between the chambers for each frequency band, the KD-Q1 reduces listening fatigue, enables smooth spatial reproduction, and achieves natural localization.

Furthermore, excessive low-frequency pressure peaks are finely controlled through the combination with the baffle’s bottom vent structure, ensuring a well-balanced overall acoustic performance.