Making a Preamp - Page 4

drago · 12th April 2006, 02:38 PM

Maybe you'll like to build this albeit a bit complicated, but you can count on it. It's the design of a world acclaimed manufacturer.

Johan Potgieter · 12th April 2006, 11:37 PM

Nice Circuits Drago! It will be fun to put on the analyser programme and see what they can achieve.

Just to point out (although I think most will pick it up) that the 2nd transistor in the line amp (post#30) has its collector and emitter reversed.

Regards.

drago · 13th April 2006, 02:01 AM

Johan Potgieter,
Thanks, I usually make this kind of careless mistakes. The RIAA feedback network was used by the manufacturer from the old tube days to BJTs even after the company sold to the Japanese. They keep using it for many years.
For those who are interested in the circuit please foget the one of post#30. Here the correct one.

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12th April 2006, 11:37 PM	#32
Johan Potgieter diyAudio Member Join Date: May 2005 Location: Pretoria, South Africa	Nice Circuits Drago! It will be fun to put on the analyser programme and see what they can achieve. Just to point out (although I think most will pick it up) that the 2nd transistor in the line amp (post#30) has its collector and emitter reversed. Regards.