reading all the posts, I conclude that the stock capacitor is adequate. There is no evidence showing the contrary.
It is to note that proposed alternatives were worse, such as tantalums, and non-polar.
This is an example of people without knowledge trying to find a quack solution to a problem that they invent.
It is to note that proposed alternatives were worse, such as tantalums, and non-polar.
This is an example of people without knowledge trying to find a quack solution to a problem that they invent.
You really think subjecting parts known to fail short and in flames to thermal abuse is a good idea? Cryo treating caps is BS anyway.
@gabdx and others:
One won't get very far if one ignores evidence that one cannot explain and then uses argumentum ad hominem.
One won't get very far if one ignores evidence that one cannot explain and then uses argumentum ad hominem.
Is it useful to argue over what the "signal path" is? All the parts in the circuit and those connected to it will have some effect at the output. You could say the road surface is not part of your car but it affects your driving experience nonetheless. It is prudent as a general rule to consider all capacitors in the circuit as having an influence on the sound quality.
Practical capacitors are not what you are taught in basic electronics class. They have complicated characteristics. These matter to the sound quality of an amplifier. The same goes for practical transformers. Resistors are usually not a big deal but sometimes you have to watch things like thick film types that are voltage dependent.
Practical capacitors are not what you are taught in basic electronics class. They have complicated characteristics. These matter to the sound quality of an amplifier. The same goes for practical transformers. Resistors are usually not a big deal but sometimes you have to watch things like thick film types that are voltage dependent.
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I sincerely believe that BobtheBuilderMLG was jesting. Don't get worked up by it.
Ah, I see, it's hard to tell with some of the threads around here
Was hoping people weren't putting their tantalum caps in the freezer...
How about adding another feedback network, to correct the feedback network?
Oh, wait.
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I agree with this and would add that the inverting input is a summing junction which means effectively there are two separate signal arms which include the decoupling arm to earth resistor and capacitor and both have to be considered for quality and for correct earthing to avoid mains frequency signals entering by this route.
Agreed. The 'signal path' is an unfortunate meme that has no practical value other than to confuse the hell out of people.
Every part in an amp contributes to how well the amplifier does its job. If it doesn't, you could remove it with no ill effect.
Of course some parts have more impact than others. Obviously an output power transistor in a power amp has more impact than the exact brand of electrolytic in the power supply. And the contribution of some part parameters, like the brand of the power supply cap, may be so small that the effect cannot be realistically measured/heard. But that doesn't mean it isn't there.
Jan
Agreed. The PCB layout and routing, wiring, enclosure, all have an impact. But often the impact is so low that it doesn't influence the sound reproduction perceptibly.
But many are not familiar with how our perception apparatus works. They do not understand that if you spend $ 100 for a boutique cap, you can be sure you will perceive an improvement in your sound.
That is often when communications break down.
Jan
As usual, the voice of reason
.I think if more diyers tried their hand at designing things rather than simple tweaks it would really help get a feel and be more rewarding as well.
At the end of the day, hearing is believing. This is a sound reproduction endeavor after all. You have to be careful not to be fooled by things that only glitter and not all $100 caps are necessarily a rip-off. Personally, I have never spent that much on one and don't aspire to. There are valid engineering differences between caps of different construction and some so-called boutique ones do optimize some important aspects. But you either have to know what to measure and be able to measure them or you have to use your ears. And different aspects affect the sound differently depending on the circuit they are in so I don't think there are many general rules, especially relating cost to sound quality.
Hello,
A paper rather interesting, from Electronics World november 2003, by M. Bateman.
I found it on the net in 2012.
Today, I didn't find it again.
I hope there is no copyright on it.
It is not available from "Electronics World" site.
You will learn how to add distorsion to the feedback loop, and much more !!
As, it is too large for this discussion, it is splitted in 2 parts.
First part:
A paper rather interesting, from Electronics World november 2003, by M. Bateman.
I found it on the net in 2012.
Today, I didn't find it again.
I hope there is no copyright on it.
It is not available from "Electronics World" site.
You will learn how to add distorsion to the feedback loop, and much more !!
As, it is too large for this discussion, it is splitted in 2 parts.
First part: