not me I am sorry
I like these ..
and similar .. zero noise things 🙂
Do you forget MK132, TF020R & USF340😉
I believe Wurcer put this up in the Blowtorch thread. I have tried dthe TNPW and will be comparing the Isabellenhuette to Caddock MP and Fukushima, but on paper, the Isa trounces the other two. TNPW in Salas Folded RIAA has shocked two lifetime audio guys in terms of sound and low level detail. Sending a board with them soldered on to Salas to see if he thinks he can hear any difference. Figured he would be a good one to ask to compare.
https://dcc.ligo.org/public/0002/T0900200/001/current_noise.pdf
https://dcc.ligo.org/public/0002/T0900200/001/current_noise.pdf
After comparing MK132s to TX2575s on my gainclone, I now swear by the latter. Planning to use them as the I/V resistors for my Legato rebuild 😀
Sorry for sounding like a broken record
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Well, I fully agree that carbon composition resistors are *bad*, and of course more modern ones are much better.
The Resista one is incredibly good, and is a series produced 25 cents part.
What I can't believe is that a handmade one can be "better".
Not even if it costs U$50 .
My point , which I repeat here, is that we have *incredibly* good parts, and to boot abbundant and for very low cost.
So good, that "exotics" can NOT, repeat NOT prove they are better, so they avoid publishing Lab measured specs and rely on hard to define (everybody has his personal interpretation) concepts such as "Soundstage", "lively", "smooth", etc.
Can Audio be bettered?
OF COURSE !!!
That's the point!!!
But the path lies in better design and development , not in using the same old designs , or even poor new designs, which can be magically saved by using exotics.
Thanks for posting the comparison, I would have loved to see something "midway" between such different contenders, such as a standard carbon film resistor, the common, say, 2 to 5 cents type, used by everybody.
Don't want to pre-judge, but I think it will sit closer to the Resista than to the Carbon Composition one.
Thanks again.
The Resista one is incredibly good, and is a series produced 25 cents part.
What I can't believe is that a handmade one can be "better".
Not even if it costs U$50 .
My point , which I repeat here, is that we have *incredibly* good parts, and to boot abbundant and for very low cost.
So good, that "exotics" can NOT, repeat NOT prove they are better, so they avoid publishing Lab measured specs and rely on hard to define (everybody has his personal interpretation) concepts such as "Soundstage", "lively", "smooth", etc.
Can Audio be bettered?
OF COURSE !!!
That's the point!!!
But the path lies in better design and development , not in using the same old designs , or even poor new designs, which can be magically saved by using exotics.
Thanks for posting the comparison, I would have loved to see something "midway" between such different contenders, such as a standard carbon film resistor, the common, say, 2 to 5 cents type, used by everybody.
Don't want to pre-judge, but I think it will sit closer to the Resista than to the Carbon Composition one.
Thanks again.
Hear Hear.
(in particular the old mk3, btw http://www.diyaudio.com/forums/soli...prp-caddock-mk-132-resistors.html#post1367987 )
Very interesting. Thank you !
Please do not laugh at me
But what about "linearity" with very low level signal ?
I suppose that a good feedback resistor should be exceptionally linear
Maybe it is also a noise related issue ? the low the noise the higher the linearity ?
Which Resista series have you tested ?
Because Holco are rare and Caddock are very expensive
Thank you very much again
Regards,
gino
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Hi buzzforb,
I see that you recommend the Rhopoint squaristor GR102 as IV resistor.
Can they also be used in other locations like a stepped attenuator or F5 amplifier ? Because the Rhopoint squaristor are wirewounds, so I suppose they'e inductive.
Regards,
Danny
I see that you recommend the Rhopoint squaristor GR102 as IV resistor.
Can they also be used in other locations like a stepped attenuator or F5 amplifier ? Because the Rhopoint squaristor are wirewounds, so I suppose they'e inductive.
Regards,
Danny
http://www.rhopointcomponents.com/images/squaristor.pdf
Whether inductive resistors in that position is bad, is a question for another.
Whether inductive resistors in that position is bad, is a question for another.
Large value wirewounds show relatively low inductance compared to the resistance. Small value wirewounds can have very significant inductance. They would be a very poor choice for I/V resistors. That's a good position for metal foil.
We used a lot of those Rhopoint WW precision resistors in industrial automation.
I could not measure the inductance since it was so low. The resistance coil is split into 2 halves, wound in opposite directions.
Since inductance was never a problem we did not go to the expense of a network analyser to measure it.
It is not specified in the data-sheets, either. This is not actually a good sign!
I could not measure the inductance since it was so low. The resistance coil is split into 2 halves, wound in opposite directions.
Since inductance was never a problem we did not go to the expense of a network analyser to measure it.
It is not specified in the data-sheets, either. This is not actually a good sign!
Aha, I just found the Rhopoint econistor, comparing the specs it looks like it's the same as the Rhopoint squaristor but in another package and non-inductive wound 🙂
Wow! They are big though, 12.7 mm long.
Mouser has IRC resistors, which are similar.
http://www.mouser.com/ds/2/414/RBR-189518.pdf
Evrybody knows square resistors sound better than round resistors. Why would inductive resistor in the IV position be a bad idea. Screw with phase
Yes. I'm even somewhat familiar with the Ayrton-Perry winding techniques. 😀
But a foil resistor can be relatively inexpensive and compact, which is important in high bandwidth applications (like the staircase output of a DAC).
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