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14th December 2009, 09:19 PM
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diyAudio Member
Join Date: Dec 2002
Location: Calgary, Alberta
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Does anybody know of a single opamp/feedback loop eq preamp for 78's?
The title kind of says it all. What I am looking for is a schematic for a 78 rpm single opamp stage (i.e. feedback loop) preamp equalization circuit. I have looked and looked but cannot find one. I guess they are not common for various reasons. I am only really interested in 1 eq curve, the BSI curve that was used post 1953.
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