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transistor circuit to replace transformer in ribbon mic?
transistor circuit to replace transformer in ribbon mic?
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Old 14th August 2004, 05:32 AM   #1
ubertar is offline ubertar  United States
diyAudio Member
Join Date: Mar 2004
Location: Brooklyn
Default transistor circuit to replace transformer in ribbon mic?

Is anyone aware of a schematic available for a circuit that would replace the step-up transformer in a ribbon mic? Hopefully that would be cheaper to build than what a good ribbon transformer costs (about $60).
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Old 14th August 2004, 10:42 AM   #2
MarkyM is offline MarkyM  United Kingdom
diyAudio Member
Join Date: Aug 2004
Location: Gloucestershire, England
I'd be interested too. I had a couple of the old Tannoy ribbons and they were very low output with a fairly rubbish transformer. I tried lots of things to amplify the ribbon directly but kept running into lots of noise. The transformer increases the output voltage without increasing the noise.

I also had my mic magnets reenergised by a specialist repairer. He used something which looked like it would stop all the watches in the vicinity, but it certainly did the trick. And I got the ribbons replaced, which worked well.

Good luck with your search - maybe there is a circuit out there!

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