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-   -   Input stage question/criticisms (http://www.diyaudio.com/forums/solid-state/102177-input-stage-question-criticisms.html)

speakerguy79 19th May 2007 08:17 PM

Input stage question/criticisms
 
I'm designing an input stage for a preamp and was wondering if this was any good:

http://www.hayenga.com/mark/electron...utFilterHF.pdf
http://www.hayenga.com/mark/electron...utFilterLF.pdf
http://www.hayenga.com/mark/electron...rImpedance.pdf
http://www.hayenga.com/mark/electron...rSchematic.JPG

Passband gain is +6dB, 550kHz (AM radio band in US) is 12dB down from passband, and input impedance is as shown.

Any comments/recommendations/scathing criticisms? Also I'm sure I'm re-inventing the wheel with this one, so if anyone can point me to a better ckt I'd appreciate it.


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