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In the Forum: Audio Discussions
In the Thread: The crossovering Messiah is coming...air capacitors
Post Subject: Of course it should be tried...Posted by cv on: 11/24/2004
... it may well work superbly. Where it may not be ideal - well, let me explain.
The Miller capacitance is not constant but will have some dependence on level (this effect is much more pronounced in silicon). If we feed the valve from a small capacitor, it forms a potential divider (2 caps, one of which is varying a bit unpredictably with the signal).
This is mostly conjecture and neglects the fact that you have a resistor to ground there too which will smooth things out. Then of course, there is the feedback too, so please don't be put off at all! I shall call my attorney in the meantime...
Look forward to hearing how it works out.
cheers
cv
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