Hi,
So, identical loading value if I understand it correctly.
What was changed for what exactly then ?
Cheers,
So, identical loading value if I understand it correctly.
What was changed for what exactly then ?
Cheers,
Oh clearly my ears are old and useless, and must have when I believed in magic dust and audio fairies as I still couldn't hear a difference then. If you get your kicks swapping resistors and hearing differences fine by me. Just go easy on the insults please.
The most important resistor is usually the feedback resistor from the output to the input of the gain stage. This is the template that the amp tries to follow. It is also the most stressed, because it has to swing the maximum voltage, and has no DC bias current to average the internal temp changes in the resistor.
And telling me that my electronics is not up to scratch and my ears are not as good as his is not condescending?
So you agree with SY that the cartridge load resistor is of lesser importance?
I note your current designs use Dale resistors and you are on record on this forum telling people to use these. Can you confirm people should stick with these and stop worrying?
It's also not difficult to understand that this only becomes relevant at VHF or UHF, or slightly lower HF frequencies in very low impedance or very high impedance circuits. No effect whatsoever at the middling sort of impedances of a cartridge circuit at audio frequencies. If swapping a resistor make a noticeable difference then the resistor is faulty, or poor tolerance, or your phono preamp has parasitic oscillation.nicoch58 said:
The main thing a resistor adds to a circuit is resistance. If not, it is faulty.
A square law effect can be made worse by adding a bias. In the case of resistor heating this does not happen because of the time constants involved, but bias does not improve the situation. Using a bigger or better resistor, or a string of resistors, is the solution. Of course, if there is significant DC then this might force the use of a bigger resistor.john curl said:
He appears to have already suffered from brainwashing by the physics negation police.madisonears said:
Resistor problems, if sufficiently large, can be measured. Usually, they cannot be heard. The main exception is the nonlinearity of carbon comp which although quite small can be heard by some people sufficiently well that they actually prefer this distortion.
A stable value, low parasitics, resistor would do for loading a cartridge. Any heating is miniscule.
It does not need to be an ultra stable resistor. Ambient temperature effects are dominant and since most of us operate our stereo gear in near constant temperature surroundings, ordinary stabilty is good enough, maybe +-50ppm/C or even 100ppm/C would be good enough. Not sure that +-300ppm of a metal oxide would be good enough.
Carbon composition resistor is a complete waste of time, effort and money.
It does not need to be an ultra stable resistor. Ambient temperature effects are dominant and since most of us operate our stereo gear in near constant temperature surroundings, ordinary stabilty is good enough, maybe +-50ppm/C or even 100ppm/C would be good enough. Not sure that +-300ppm of a metal oxide would be good enough.
Carbon composition resistor is a complete waste of time, effort and money.
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is someone using low TC alloy wire for phono cartridges?
would expect low TC alloys to give a big hit to noise performance thru higher R
with pure Cu, Ag, Al(?) you are going to have 1000s of ppm/C TC
and the cantilever rubber flexure bearing will have a fairly high TC to its mechanical properties too
engineers aren't in denial of component parasitics, environmental sensitivities and other nonideal behavior
it is Because of the demand by "conventional engineers" over many industries, application requirements that the many differing types of Resistor were developed, are available at all - some engineers needed, speced them and bought them in economically viable quantities/prices that paid for their development, manufacture
would expect low TC alloys to give a big hit to noise performance thru higher R
with pure Cu, Ag, Al(?) you are going to have 1000s of ppm/C TC
and the cantilever rubber flexure bearing will have a fairly high TC to its mechanical properties too
engineers aren't in denial of component parasitics, environmental sensitivities and other nonideal behavior
it is Because of the demand by "conventional engineers" over many industries, application requirements that the many differing types of Resistor were developed, are available at all - some engineers needed, speced them and bought them in economically viable quantities/prices that paid for their development, manufacture
Nice to see you John here... Yes Erno use Caddock MK132V for feedback resistor
fdegrove all the same dale holco prp kiwane riken all sound different only with shinkoh I can go up 30ohm on load, maybe my system at the time dont have one caps in series with signal ,year of mod....
PS
We are diy's and music lover here not bla bla build and mod stuff please !!
we want the sound better and we use the better component for better sound ...if you think that with cheaper stuff will sound better you have a problem ! if you think that all is the same all work the same you have big problem
fdegrove all the same dale holco prp kiwane riken all sound different only with shinkoh I can go up 30ohm on load, maybe my system at the time dont have one caps in series with signal ,year of mod....
PS
We are diy's and music lover here not bla bla build and mod stuff please !!
we want the sound better and we use the better component for better sound ...if you think that with cheaper stuff will sound better you have a problem ! if you think that all is the same all work the same you have big problem
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Ah, first the attacks on people's gear and now attacks on their opinions and experiences. Interestingly enough, none of the attacks are based on reliable evidence, and in fact speak against it.
More expensive and better have a very tenuous relationship. I really don't have a problem with the right part in the right place chosen by the requirements of the topology. If that means in your mind I have a problem, then so be it. But you won't persuade me you have any meaningful data on the subject, just that you are happy with your system, which is fine.
You do however appear to have a problem with people that use science and logic to chose parts though...
Those who understand circuits know that better sound comes from better circuits, not "better components".nicoch58 said:
If you think that more expensive stuff will sound better then your wallet has a problem.
if you think that all is different all work different you have big problem
In normal domestic audio there is only about one place in the system where a resistor might contribute to the sound, and even then at only a very low level (far below transducer problems, for example): the feedback resistor in the power amplifier (as John Curl mentioned). The solution is simple: use a bigger resistor.
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