STAX in-the-ear earspeaker SR-003MK2 as well as SRS-002 features an open-air type structure that inevitably cause sound leakage, and therefore they are sometimes not suitable for outdoor use until now. Also, since their housing part is large and heavy compared with usual earphones, it is hard to obtain the stable fit feeling. The CES-A1 (CC-A1+ET-A1) has been developed in order to clear these problems.
A lot of innovations are incorporated into the sealing cover CC-A1 to bring full potential of SR-003MK2 and SR-002 into play. Visitors at the event hall listened to the sealing cover effect, and their opinions have been reflected in refining the cover. After repeated measurements and auditions as well as dozens of trial productions the sound leakage has been suppressed enabling listening to music in the outdoors without spoiling the tone quality of electrostatic type sound element.
An asymmetrical layout has been employed for the cover structure. By daring to shift the center axis, the sound diffusion is adjusted and the generation of standing wave is prevented. Thus both high resolution and clear sound image has been realized. The rib mounted inside the cover reinforces rigidity and controls unnecessary resonance. The sound-absorbing material equipped inside the cover aims at controlling reverberation sound. The sound absorption space absorbs sound using the internal material and then mutes sound when it passes through the opening, which is effective in suppressing the interference to the film diaphragm.
The ear chip ET-A1 provides with different elastic hardness each for ear hole touching portion and for ear pinna touching portion. This has improved the fit feeling and close contact. Moreover, the opening has been made elliptical to fit in common with many ear holes, and also improving contact tightness of outside ear passageway has controlled the loss of low-frequency region.
The CES-A1 is a new option that makes the portable use of STAX earspeakers more familiar and enables enjoying STAX sound without feeling any constraint around.
* Specifications and appearance are subject to change without notice for improvement.
* Usable in combination with corresponding in-the-ear earspeakers.