In Reply to: RE: Dynaco FM-3 upgrades question posted by NativePrairie on April 6, 2009 at 12:33:00:
Are you planning on doing anything to correct the treble roll-off? Tests claimed it was down 4-5dB at 10kHZ.
Shown is David Berning's replacement circuit for the 555001 PEC de-emphasis design flaw in the FM-3. You might want to consider correcting that before you swap any more coupling caps.
Good luck with it. Glad you got the hum fixed. Nice looking tuner!
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Follow Ups
- RE: "the inherant factory treble roll-off of the FM-3" - 1973shovel 06:06:40 04/07/09 (0)