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Tubes Asylum Questions about tubes and gear that glows. FAQ |
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Tubes Asylum Questions about tubes and gear that glows. FAQ |
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In Reply to: boosting fisher 800c input gain posted by ranger97 on September 8, 2005 at 00:41:08:
... of the first stage. This was employed in some preamps to get maximum gain. But you would have to capacitively couple the input grid which means you would now be listening to a capacitor. What are the plate and cathode resistors of the first stage. The problem is that if you change one thing it changes something else. Can you draw a schematic without posting the entire schematic. This would also upset the feedback to the cathode of the first stage which would have to be dispensed with or modified, which I'm sure the Fisher uses. I think it would be better just to add another gain stage and not heavily modify your fisher. A pre-preamp just for moving coil or low output carts. IMHO, cordially, Ray
"Polarities are seldom aware of their polarness." Prospero
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Follow Ups
- You could ground the cathode and grid leak the bias.. - grhughes 06:53:48 09/08/05 (1)
- More... - grhughes 07:09:43 09/08/05 (0)
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