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Pure copper constant charge corona ring the roll it play 
in an electrostatic loudspeaker system.


    The force that set the diaphragm in motion in an electrostatic speaker is created by the interaction of a constant DC charge placed on the diaphragm (by the bias power supply) and the signal charge placed on the stators (by the audio amplifier). The diaphragm is specially treated so that its surface is electrically conductive to enable it to accept an electrical charge.
Ideally, the charge on the diaphragm should be perfectly uniform over the entire surface of the diaphragm. If any electrical leakage paths exist that bleed the charge off of the diaphragm the charge density in that particular region is lessened and sound level is reduced in that area. This results in a lower overall speaker sensitivity. Leakage paths normally occur around the outer edge of the diaphragm where it is attached to the panel frame. These paths are usually caused by condensation of moist air in humid climates. They can also be caused by air-borne contaminants that are attracted to the diaphragm such as an accumulation of microscopic particles in cigarette smoke, normal room dust, cooking oil etc.
The pure copper constant charge corona ring effectively blocks electrical leakage paths and therefore maintains a uniform charge density over the surface of the diaphragm. The copper constant charge corona ring consists of a copper foil strip that is placed around the outside edge of the conductive diaphragm. The bias voltage supply is connected to this cooper strip. The DC Charge is directed from this ring over the complete conductive surface of the diaphragm. If moisture or a contaminant forms a potential leakage path from the diaphragm to the panel stators, it must cross the charge corona ring. The charge availability of the copper ring is engineered to be capable of supplying consent charge to any leakage paths that might occur while maintaining the proper charge density on the diaphragm. In this way, leakage paths may occur but they don't affect the charge on the diaphragm and sound is not affected.
The pure copper constant charge corona ring help eliminates the effects of dust and other common environmental contaminants. The "corona ring" is crucial in hot, salty and humid climates.




Specifications and design are subject to change without notice
due to our continuous research and development program.
Prices subject to change without notice.
Products made in the USA
2004 Just Real Music