KhornKerry Posted May 14, 2003 Share Posted May 14, 2003 Magnet shield for my Cornwall center speaker. For those of you that wish to use a Klipsch Heritage speaker as a center channel in a home theater, and have a conventional picture tube TV here is a solution to the color distortion problem. The tweeter in my Cornwall (year 1980) has a rectangular magnet. First I covered the magnet with a thin layer of cardboard (about .05") next layer on top of the cardboard was .04" of steel sheet metal, then a layer of cardboard, then steel, then cardboard then steel again. This made a sandwich of 3 layers of cardboard and 3 layers of steel. I secured this together with a hose-clamp. The squawker did not need much shielding (if any) just one layer of 1/2" thick dense foam then a cylinder of steel with screws to hold it together. The woofer was done the same as the tweeter, maybe adding a 4th layer of cardboard and steel, I do not remember for sure. At this point I was still getting color distortion on the TV. Not sure what the problem was I removed the tweeter from the speaker, color distortion was still there. Next I removed the squawker, color distortion was still there. So at this point I knew the problem had to be coming from the woofer. The steel frame of the woofer was causing the distortion, so I made a single layer of steel in triangular shape that I positioned between the woofer and the squawker. I glued a thick peace of foam the woofer magnet to help support the triangular steel. This eliminated the color distortion completely and has no effect on the Cornwall performance at all as for as I can tell. This modification is 100% reversible. Note there is a thin layer of rust on the steel, this does not hurt anything. See pictures. Quote Link to comment Share on other sites More sharing options...
KhornKerry Posted May 14, 2003 Author Share Posted May 14, 2003 Tweeter and Squawker Quote Link to comment Share on other sites More sharing options...
KhornKerry Posted May 14, 2003 Author Share Posted May 14, 2003 Tweeter Squawker and woofer Quote Link to comment Share on other sites More sharing options...
KhornKerry Posted May 14, 2003 Author Share Posted May 14, 2003 Woofer Quote Link to comment Share on other sites More sharing options...
KhornKerry Posted May 14, 2003 Author Share Posted May 14, 2003 Tweeter Quote Link to comment Share on other sites More sharing options...
KhornKerry Posted May 14, 2003 Author Share Posted May 14, 2003 Cornwall and TV Quote Link to comment Share on other sites More sharing options...
Freud Posted May 22, 2003 Share Posted May 22, 2003 Why don't you put a big piece ot steel or aluminium between the TV and the "CORNWALL"? It look more simple... 1 Quote Link to comment Share on other sites More sharing options...
Malcolm Posted May 22, 2003 Share Posted May 22, 2003 Aluminum won't work. Quote Link to comment Share on other sites More sharing options...
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