What do you believe regarding the sound of passive components?

[erwin_ve]

Here is a pdf and link to various articles and tests regarding different dielectrics vs voltage stress on capacitors.

https://linearaudio.nl/cyril-batemans-c ... d-articles

Erwin

[bepone]

The graph fits not really in this context. Coupling capacitors are almost generally film capacitors.

almost in vintage fenders PI entrance cap is 500pF-1nF ceramic, and is by definition coupling cap.. also treble cap is ceramic and also can be considered "coupling" for frequencies above 1kHz so graph is ok

[martin manning]

Here is a pdf and link to various articles and tests regarding different dielectrics vs voltage stress on capacitors.

Thanks, Erwin, I have saved copies of those articles but at that link they are all conveniently collected, and they are much cleaner than the ones I have.

I think most people accept that some types of ceramic dielectrics will add distortion, and that is reflected in the survey result here. Similarly, a large majority believes that resistor material makes an audible difference, but there IMO it's all about noise. CC are known to have a higher voltage coefficient, and some people point to that and say they will add sweet-sounding second harmonic (thanks, RG), but IMO it's negligible. I tried pulsing some CC resistors with high voltage using my tube curve tracer, and they don't look any different from MF. I've also measured the electrical properties of a handful of coveted MF's with an LCR meter, and they were all essentially the same.

[erwin_ve]

Here is a pdf and link to various articles and tests regarding different dielectrics vs voltage stress on capacitors.

Thanks, Erwin, I have saved copies of those articles but at that link they are all conveniently collected, and they are much cleaner than the ones I have.

I think most people accept that some types of ceramic dielectrics will add distortion, and that is reflected in the survey result here. Similarly, a large majority believes that resistor material makes an audible difference, but there IMO it's all about noise. CC are known to have a higher voltage coefficient, and some people point to that and say they will add sweet-sounding second harmonic (thanks, RG), but IMO it's negligible. I tried pulsing some CC resistors with high voltage using my tube curve tracer, and they don't look any different from MF. I've also measured the electrical properties of a handful of coveted MF's with an LCR meter, and they were all essentially the same.

Hi Martin,
Yes that link has great quality pdf.
My point was that there are measurable differences in capacitor dielectrics.
On the matter of resistors: I can hear differences between metal film resistors as plate resistors in a ODS circuit. I'm not here to argue whether I'm right or wrong. My goal is: why am I hearing this difference? I start to think it has more to do with the environment where a resistor is in, induced behavior maybe?
Just like putting outside foil of a capacitor on the low impedance side to prevent induced behavior. Not that a resistor has a outside foil. ..

Erwin

[martin manning]

Metal film resistors are not all equal in noise, and this has been measured, and in fact the ranges of MF and CF overlap. Whether it's audible by humans is another question, since they are in general so much superior to CC that the difference between MF's seems negligibly small.

[erwin_ve]

Metal film resistors are not all equal in noise, and this has been measured. Whether it's audible by humans is another question, since they are in general so much superior to CF that the difference between MF's seems negligibly small.

That might be a explanation I won't rule out.

[martin manning]

Sorry, had to eat a typo CF/CC above.

[WhopperPlate]

I can hear differences between metal film resistors as plate resistors in a ODS circuit. I'm not here to argue whether I'm right or wrong.

Don’t worry , I will be their huckleberry…

it ain’t because you are tricking yourself into thinking they do , that much is certain for myself .

My goal is: why am I hearing this difference? I start to think it has more to do with the environment where a resistor is in, induced behavior maybe?
Just like putting outside foil of a capacitor on the low impedance side to prevent induced behavior. Not that a resistor has a outside foil. ..

Erwin

Great points!

[WhopperPlate]

Metal film resistors are not all equal in noise, and this has been measured. Whether it's audible by humans is another question, since they are in general so much superior to CF that the difference between MF's seems negligibly small.

That might be a explanation I won't rule out.

If it’s the noise that’s the cause for the difference….then it’s audible

[martin manning]

These guys tried to measure resistor distortion, but apparently their results were inconclusive.
https://pub.dega-akustik.de/ICA2019/dat ... 001261.pdf

[bepone]

noise is the difference in sound between the resistor types?

i heard everything in my life.. but this..

[erwin_ve]

noise is the difference in sound between the resistor types?

i heard everything in my life.. but this..

Did you read the post above yours from Martin?
The researchers considered the possibility of non linear behavior due to noise. Interesting stuff!

[Reeltarded]

Electronic audio devices create a new virtual space.

Control the program, control the playback end of the rig (remote miced cab, even better; load box and direct) change your tone caps for the second pass. Flip the phase and fold the tracks to mono.

The difference is what is left in the monitors. You can bounce that and pick what is left to pieces with real tools that will show you exactly what changed and turn this thread into a graphics based argument.

I think induction is mostly to blame.

Caps, not resistors. You don't want to make yourself insane. Ok. Have fun.

[bepone]

Did you read the post above yours from Martin?
The researchers considered the possibility of non linear behavior due to noise. Interesting stuff!

Using one type of resistor you get sound like you are smacking metal can, and using other will result in warm, muddy blanket. And here people starting to speak that this difference is because of the noise between them ? (and tryin to explain with other people measurement which is having nothing in common with guitar amp)

[bepone]

Caps, not resistors.

mostly correct .. but MF can also deteriorate sound