Old speakers wear out and must be refurbished when restoring the vintage guitar amplifiers, radios, and jukeboxes that utilize them. Re-coning is the best and most permanent method, but it has become expensive, parts are sometimes difficult to find, and the re-coned speaker will have to be broken in before it will sound as it should. In addition, preservation of the original cone is often desirable in the restoration of very rare amps and speaker cabinets. This video covers a quick, easy, inexpensive way to refurbish old speaker cones in your own workshop in a matter of hours. PLEASE NOTE: this method is not applicable to speakers with damaged voice coils. According to a viewer, this site offers all sorts of glues associated with speaker and coil construction, including the doping material used on surrounds: [ Ссылка ]

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