From: digilyd@hotmail.com   
      
   ~misfit~ wrote:   
   ..   
   > It seems that these really well-built drivers were previously used in   
   > other Wharfedale cabinets, also acoustic suspension, but fitted with   
   > doped cloth surrounds - and that quite a few of these speakers are   
   > still going strong. It's only the rubber-surround ones that have   
   > failed....   
      
   This does not make sense, rubber and foam are different, rubber surrounds as   
   used by KEF and B&W last very well, I am listening to my 1976 KEF Codas   
   right now.   
      
   > So I'm trying to find out how to make my own doped cloth surrounds to   
   > replace the (now cracked and broken) 0.5mm thick hardened 'rubber'.   
   > I'm an invalid on welfare so I have time, just not much money. The   
   > only instructions I've found on the web that come close are for making   
   > 'siliconed' cloth surrounds. However apparently no glue will stick   
   > them to paper cones other than silicone - which is a once-only job as   
   > the only way to remove it from paper cones (if the desired result   
   > isn't achieved first try) destroys the cones.   
      
   Give them aftermarket foam surrounds, they are easily available in a size   
   that is likely to fit. Or neoprene rubber if available. Corrugated cloth   
   surrounds last better than anything else, but it is possible that whatever   
   they were made with is forbidden now. Foam has some nice acoustic properties   
   in terms of attenuating reflections from the membrane edge.   
      
   Loudspeaker membranes and surrounds must always be protected from direct   
   sunlight.   
      
     Kind regards   
      
     Peter Larsen   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)