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Tweakers' Asylum Tweaks for systems, rooms and Do It Yourself (DIY) help. FAQ. |
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Tweakers' Asylum Tweaks for systems, rooms and Do It Yourself (DIY) help. FAQ. |
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In Reply to: DC-blocking capacitor posted by Duster on November 28, 2019 at 13:39:02:
What Palustris said, unless the low frequency cut off is of no importance, which seems unlikely. Two other points: R in the equation is the input impedance in parallel with the output Z of the preamplifier, which is typically very high and therefore usually can be ignored. For a true net Z of 50k ohms, I'd use 2uF of the best quality film cap you can afford. There's no reason to go higher unless you either plan to use the preamp with other amplifiers or the output Z of the preamp is low enough to lower the net impedance significantly. But I am wondering what tube preamplifier has no pre-existing output coupling capacitor. You probably will find out .
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- RE: DC-blocking capacitor - Lew 11/28/1921:56:24 11/28/19 (0)
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