robertc said:i got a pair of tamura pp opt 100 watt with 2 terminals feedback marked cf1 & cf2. can anyone tell me how to use these feedback for pp kt88 power amp.thanks.
I think you have a set of OPTs with cathode feedback taps; basically windings intended to apply negative feedback by being placed in series with the cathodes of the output valves.
If I'm right, you'll have to place them in series with the cathodes of the output stages.
Do you have a model number on the OPTs?
Hi,
Exactly.
Tamura F 2011 or 2012 probably.
Cheers,
I think you have a set of OPTs with cathode feedback taps;
Exactly.
Tamura F 2011 or 2012 probably.
Cheers,
robertc said:so what is the purpose of cathode feedback?
Reducing distortion, which it does quite well.
Not everything is about more power....
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