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Old Aug 07, 2005, 01:17 AM
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Australia, VIC, Langwarrin
Joined Apr 2004
10,589 Posts
Pat

Back in 1948 JBL pioneered the use of edge wound voice coils and provided us with the famous ''voice of the theatre'' series ,and killed the opposition for years,later on Lansing went his seperate way and became ''Altec'',''JBL'' still today make the best expontental drivers and intrument speakers.the flat wire is still regarded as the best way of getting the most copper into a given space as the wind is more easier controlled with no gaps but is not recomended for high turn counts as hot spots can develop that cause premature failure but is quite ok for 2or 3 layers in our application, the use of alluminium fails because of expansion due to heat wich distorts and fouls the magnetic gap in speakers according to my contact in this field.
cheers.Lez.
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