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In Reply to: Re: I don't buy it. posted by danlaudionut on March 9, 2007 at 06:09:21:
Yes but all caps don't have the same internal resistance.
True, but is this a function of capacity or just a different parameter?Or internal inductance for that matter.
I don't think induction really plays a role here. For a lot of (good) capacitors inductance is mainly determined by the length of the leads, that small.I hear it and you don't - fine. Much cheaper for you. Or do you hear it and just haven't heard an acceptable explanation for it?
Actually I have no capacitor in the signal path anywhere. So I can't comment on that. Ofcourse I did experiment with different capacitors in the past, now I only use GE motor run capacitors. I use the size that I need, varying from 10uF to 80uF. I never noticed a slow or fast effect, but I'll pay some extra attention next time I'm on the breadboard again.The only thing I said is that I don't buy the 'large capacitors are slow argument' based on the theory presented here. The arguments so far just don't make sense to me.
regards,
AJ
Follow Ups:
> > is this a function of capacity or just a different parameter?Capacity is a definite part it.
As well as design and materials.> > I don't think induction really plays a role here.
On most probably not but some cheaper ones ...
Especially big electrolytics which Need bypassing IMO.> > now I only use GE motor run capacitors
Same here - convert as of late.
Especially in speaker crossovers.
I am getting to hate inductors there too.
Even Goertz 12gauge copper foil ones.> > I don't buy the 'large capacitors are slow argument'
Fine with me, I am only telling what I have learned.
That is all I can do or even want to do -
I am NOT saying that if you don't use small caps or
don't bypass large caps you have low-fi equipment 8^D
I have heard the difference and am reporting such.
Take it or leave it.Caveat - I haven't heard the need for any bypass on my
40 or 5uFd GE 97Fs used in my speaker crossover though.DanL
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