What is the difference between RF and Magnetic shielding?

Radio frequency (or RF) shielding is required when it is necessary to block high frequency - 100 kilohertz and above - interference fields. These shields typically use copper, aluminum, galvanized steel, or conductive rubber, plastic or paints. These materials work at high frequencies by means of their high conductivity, and little or no magnetic permeability. Magnetic shields use their high permeability to attract magnetic fields and divert the magnetic energy through themselves. With proper construction, magnetic shielding alloys have the ability to function as broadband shields, shielding both rf and magnetic interference fields.

Is a special shield required for stereo speakers, and do you stock them?
Due to the broad range of speaker sizes and configurations, it is not feasible to maintain an inventory of completed shields. Two options are available. First, you can purchase raw materials (CO-NETIC AA or NETIC alloys) and fabricate your own shields. Secondly, you can provide the necessary information and have Magnetic Shield's staff design and construct custom shields, configured for your needs.

Tags: neodymium magnets RF,magnetic shielding,magnet,permanent magnet Smco magnets