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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: RE: Lower gain (than 5751) direct replacement for 12AX7 tubes ? posted by BCR on June 19, 2015 at 18:12:54:
That's interesting.Have you ever taken voltage readings to ascertain the operating points with each tube choice?
Sorry, I didn't really mean to change the subject.
"The new Quicksilver Phono preamp offers high gain, low distortion, low output impedance and both active and passive RIAA eq."
Different tubes (even when operating under ideal conditions) all have different plate resistances. The plate resistance of a triode is a large part of why a stage has the output impedance that it has.
The output impedance driving a passive filter affects the results of the filter.
Tre'
Have Fun and Enjoy the Music
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Edits: 06/19/15 06/19/15
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Follow Ups
- RE: Lower gain (than 5751) direct replacement for 12AX7 tubes ? - Tre' 18:26:51 06/19/15 (1)
- RE: Lower gain (than 5751) direct replacement for 12AX7 tubes ? - BCR 19:10:48 06/19/15 (0)
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