04-07-2017, 08:31 AM
Certainly, there was a lack of precision in post #29, which is why I used the word "suggests" in post #42. Given that this is a technical forum, it would be really nice if folk were more precise in situations like this, as it would save a lot of speculation and going round in circles.
Looking again, you said ~100mV gave a "healthy" output. Now, given that that's 20dB less than 1V, then I don't feel the need for apologising for the conclusion I reached.
Actually, for my own education, I'd like to know the difference in gain from the two valves, and I'd like to know the DC conditions of each. In my limited experience of the ECL86, providing the DC conditions are about right, the AC gain seems to be good in all cases. Only when they are really off do we see weak gain.
In threads like this in future, I might intervene sooner to get actual data rather than anecdote. It makes a massive difference.
Looking again, you said ~100mV gave a "healthy" output. Now, given that that's 20dB less than 1V, then I don't feel the need for apologising for the conclusion I reached.
Actually, for my own education, I'd like to know the difference in gain from the two valves, and I'd like to know the DC conditions of each. In my limited experience of the ECL86, providing the DC conditions are about right, the AC gain seems to be good in all cases. Only when they are really off do we see weak gain.
In threads like this in future, I might intervene sooner to get actual data rather than anecdote. It makes a massive difference.
