Help me know, please
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Help me know, please
I've come across older posts suggesting that unmatched tubes can produce a sweeter tone, and I've noticed this in my own experience a few years ago, particularly with my 18 where the tubes are approximately 8mA apart, resulting in a pleasing tone. Since my PT lacks CT for heating, I used two 100-ohm resistors. My question is, would a linear pot with 250 ohms help mitigate the hum from unmatched tubes? Also, is there an upper limit to using unmatched tubes?
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Re: Help me know, please
Hum cancelling is lost when power tubes are very far from matched. What's considered matched or unmatched is a matter of opinion anyway.
To learn more, read this thread, and especially pay attention to what Phil says: viewtopic.php?t=23653
To learn more, read this thread, and especially pay attention to what Phil says: viewtopic.php?t=23653
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Re: Help me know, please
How far apart is the plate dissipation? I’ve got a 5f11 clone with a mismatched PD of 8 watts and no added noise. The current is about 10 mA apart if I recall.
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