[sdiy] DC blocking caps on inputs - or not?

[Mattias Rickardsson]

Another capacitor question popped up:
What's your view on having electrolytic caps right at the input of an audio
device in order to block DC and/or protect the circuit?

I always have a smallish resistor and dual schottky diodes connected
towards rails at the inputs, and I hope this will protect from most voltage
spikes. Does a cap really add any protection here? The DC issue can be
taken care of later in the signal chain, and avoiding input caps saves
cost, space, and possibly audio quality.

/mr - with golden [tinitus shower] ears

Den 3 feb. 2016 8:01 em skrev "David G Dixon" <dixon at mail.ubc.ca>:
>
> I've read all these recapping posts with interest, but I gotta say, I
avoid using electrolytic caps except for power rail decoupling purposes.  I
never design them into actual circuits (and I've never built my own power
supply).  Same with tants.
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