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15th November 2010, 09:51 PM
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diyAudio Member
Join Date: Feb 2004
Location: Caen - France
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Quad ESL 57: electrical measurement (capacitance)
Hello,
Did s.o. tried to measure capacitive value between diaphragm and one stator ? Is there some useful info to derive from this measurement or will it be roughly the same whatever happens ? My measurements: 200pF for a rebuilt bass panel, 550pF/360pF for an aged treble panel (outside strip/center strip). This later panel was rebuilt by a pro. and is somehow not in good shape currently (it makes hum: see my other post). My feeling is that surface resistivity of coating may have some influence. Thanks.
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Quad fan ! One hobby: re-build ESL 57 |
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