Resistor Sound Quality?

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billshurv

billshurv

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marce said:
. There is all sorts of stuff that is done routinely in layout these days, but when I look at a lot of audio it just looks like the PTH boards I was doing when I started, nothing new in a lot of cases and anything new such as SMD (ha ha) is treated with suspicion or like ferrites just sounds bad because a few say so.....
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Domestic audio and precision analogue diverged about 35 years ago.
 
billshurv

billshurv

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marce said:
I tend to see all this as basic competent engineering, so shouldn't be a problem if things are designed correctly, if you overstress a component you are going to have issues, if you do things correctly you wont have issue... simple:)


As I have said before, a thermal camera is a great design aid.
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Which is why I failed to see any magic. Some things are of interest at CERN, but not in a hifi. But i do see the fun in trying to build things that are at the limits of an AP to measure.
 
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simon7000

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scott wurcer said:
You still have not posted links to any papers that you have alluded to on this low current conductivity hypothesis. Non-ohmic junctions would be pathological for resistors and I don't know of any physics for ohmic metal to metal junctions to have a prefered direction.

This paper is OK and not very well translated but they did CLT-1 and second harmonic tests, of course they concluded the seconds were rectification without solid proof.
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Ignoring Schottky effect and reports of directivity by unpublished or peer reviewed cites you are welcome to your OPINION. However my OPINION is that there are direction issues that are related to skin effect and electron scattering, not just those microdiodes you are so fond of! ;)

My school of engineering says that "If you aren't making mistakes, then you aren't doing anything."

I have posted data on decent resistors that do have second harmonic distortion. But what I will get around to looking for is different. Right now very busy.

Attached is one of those horrible resistor measurements. Of course Picasso fans like this coloration.
 

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marce

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billshurv said:
Which is why I failed to see any magic. Some things are of interest at CERN, but not in a hifi. But i do see the fun in trying to build things that are at the limits of an AP to measure.
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I like to do the best job possible...
Somewhere I have a design guide that will probably be relevant for some of todays audio, regarding component placement and thermal effects, plenty of PTH resistor caps and TO3 transistors... may be a bit modern though:D
 
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marce

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simon7000 said:
Ignoring Schottky effect and reports of directivity by unpublished or peer reviewed cites you are welcome to your OPINION. However my OPINION is that there are direction issues that are related to skin effect and electron scattering, not just those microdiodes you are so fond of! ;)

My school of engineering says that "If you aren't making mistakes, then you aren't doing anything."

I have posted data on decent resistors that do have second harmonic distortion. But what I will get around to looking for is different. Right now very busy.

Attached is one of those horrible resistor measurements. Of course Picasso fans like this coloration.
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So you are saying a resistor one way will sound different when turned 180 degrees.... I do find all this directional stuff a bit quantum especially cables:confused: No one else seems worried about it outside of audio?
 
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simon7000

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marce said:
So you are saying a resistor one way will sound different when turned 180 degrees.... I do find all this directional stuff a bit quantum especially cables:confused: No one else seems worried about it outside of audio?
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In some cases I can measure a difference. Not the same as being able to hear it.

It is easy to measure a bunch of 1% resistors and if you are good at it see that they all are sightly different. Does that affect any practical circuit? (Just in case you were in doubt the answer is no.)
 
JMFahey

JMFahey

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This tread is a joke. If you can;t hear difference between resistors then skip Hifi.
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Well, in my book This tread is a joke. If you (claim to) hear difference between resistors then skip Hifi. :rolleyes:

but don't worry, maybe you can't find a job as a commercial/production audio designer, but still a few places available as:

nanga1.jpg


those Mojo Medicine pots are full of directional resistors and cables, capacitor grade beeswax, 60 y.o. NOS electrolytics and batteries, etc. but don't worry, he'll soon get a shipment of latest trend compatible resistors, whatever it is.
 
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