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Old 24th Jun 2007, 6:28 pm   #4
daviddeakin
Hexode
 
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Join Date: Apr 2007
Location: W Yorks, UK.
Posts: 406
Default Re: making of a triode coupled RIAA preamp

Hmm, you say that in your "triode transformer" the AC component is divided by mu. Surely that causes very heavy loss in gain?
Surely the same could be acheived with a resistive divider, DC coupled to a cathode follower to get a low Zout, but would cause less attenuation of the AC signal?

Also, I would argue that there are resistors and capacitors in the signal path, because all of the components play some part in signal flow. The signal does not simply follow the path you have drawn, like a mouse in a maze.
However, I love your design, and will seriously look into building it (I need a valve phono stage!)

Last edited by daviddeakin; 24th Jun 2007 at 6:36 pm.
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