For what it's worth, I have never experienced a change in dynamic content in the way you have described in my own equipment. The main amplifier in my home is a home-brew and used for all types of entertainment (films, music, etc.). Initially I ran with a passive volume control at its input which followed the source selector switch. Eventually, I decided to build a pre-amplifier with tone controls (loosely based on ESP design, to help compensate for the room acoustics) and experimented with moving the volume control to the pre-amplifier input, out of curiosity. Other than changing the op-amps to suit my preferences, nothing I've tried has affected the dynamics in any appreciable way and I listen at all volume levels.
Very fine with me currentflow that means that in the near feature you have what it takes to make a test ...
make it !!! let us know what do you think ....
remember the lowest power available was the question here ...
Kind regards
Sakis
And thank you so far even though an argument who knows we all might learn something from it ...
( i expect George and DF96 are excluded but that was just a joke😀😀😀)
make it !!! let us know what do you think ....
remember the lowest power available was the question here ...
Kind regards
Sakis
And thank you so far even though an argument who knows we all might learn something from it ...
( i expect George and DF96 are excluded but that was just a joke😀😀😀)
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If I find the time, I will experiment. In the meantime, I hope you find your answers!
Got a Question currentflow ( its not rhetorical or theoretical )
When you made the active pre did you bother to mix match parts ? Like for example input capacitors Did you get Vima for example , thought that since these are Vima play fine and went to the next step swapping op amps ?
Cause this work like low listening level will require time instrument and analysis ....
Probably listeners that don't bother in deep with this details will never notice that ....
Sakis
When you made the active pre did you bother to mix match parts ? Like for example input capacitors Did you get Vima for example , thought that since these are Vima play fine and went to the next step swapping op amps ?
Cause this work like low listening level will require time instrument and analysis ....
Probably listeners that don't bother in deep with this details will never notice that ....
Sakis
I found a good way to test amps on full power is to use a high power speaker laid on a piece of carpet. The carpet kills most of the noise.
The other alternative is to use a dummy load.
The other alternative is to use a dummy load.
I have my answers thank you ..I trust my ears very well . Only thought that may others run in the same situation and since i do very detailed work i need to verify that small detail also .
Looking at the hunger of people for vintage equipment that was made like that at least as a structure made me think twice .
Today's amplifiers have a different content of harmonics and often the sound is too clinical that is also why ppl prefers vintage audio for an every day listening /companion in low listening level ..color , character and tone .
remember the listener will draw the line and down under will write : that's the way i like it ...
To make it even worst for DF 96 and George i will say that an active pre stage will repeat the dynamic characteristic also in higher power levels Problem is that the balance will be way too delicate and over analysis plus all the problems of an active stage will be present ..So active but well designed well supplied and with the minimum required gain .
Kind regards
Sakis
Looking at the hunger of people for vintage equipment that was made like that at least as a structure made me think twice .
Today's amplifiers have a different content of harmonics and often the sound is too clinical that is also why ppl prefers vintage audio for an every day listening /companion in low listening level ..color , character and tone .
remember the listener will draw the line and down under will write : that's the way i like it ...
To make it even worst for DF 96 and George i will say that an active pre stage will repeat the dynamic characteristic also in higher power levels Problem is that the balance will be way too delicate and over analysis plus all the problems of an active stage will be present ..So active but well designed well supplied and with the minimum required gain .
Kind regards
Sakis
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I can't remember exactly what I fitted without looking inside, but yes, I found that some capacitors sounded 'dead' while others revealed nuances that I hadn't heard before. A great deal of time was spent selecting capacitors which sounded right. I believe from memory that I used Wima (red case) at the pre-amp's final output.
east electronics;4470339To make it even worst for DF 96 and George i will say that an active pre stage will repeat the dynamic characteristic also in higher power levels Kind regards Sakis[/QUOTE said:
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Then you are good for it current flow !!
when ever time comes ..let us know
Kind regards
Sakis
when ever time comes ..let us know
Kind regards
Sakis
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Maybe they are reacting psychologically to the need to turn the volume control up compared to an active preamp.
me and NP said the exact same thing only NP didn't bother or needed to do such a low listening test ....obviously there was no juice in very low power so he put the volume up No Probs !!!
me and NP said the exact same thing only NP didn't bother or needed to do such a low listening test ....obviously there was no juice in very low power so he put the volume up No Probs !!!
In most of commercial designs the volume pot is placed before the balance pot, this is this latter, at typicaly 50% of its resistance, that will define the impedance of the preamp and eventual highs frequencies losses...
Now your putting words into NP mouth, that could be regarded as blasphemous.
Cheers George
No George its just an estimation on his work/procedure/result/target and so on . I could be wrong i could be right...its just an estimation
According to DF96 though, NP's opinion cannot be valid in this issue since the speakers he used are either poor designed or defective due to sensitivity and linearity issues .
better now ?
According to DF96 though, NP's opinion cannot be valid in this issue since the speakers he used are either poor designed or defective due to sensitivity and linearity issues .
better now ?
I promised myself that I would not contribute to this Thread, because only bad could come from it.
But I cannot let this go on.
DF96 did not say that NP's (Nelson Pass) speakers were either poor design, or defective.
Now you are putting words into mouths (or simply lying).
Andrew DF96 said that speakers with low sensitivity or hard to drive if you like are either defective or poor designed
Farther more he said that even a hard to drive speaker will play the same well in very low power ....
So yes with the contribution of George and DF 96 this thread is going wrong .... unless you think also that a hard to drive speaker will play very well at almost zero power that is the question here .
Farther more he said that even a hard to drive speaker will play the same well in very low power ....
So yes with the contribution of George and DF 96 this thread is going wrong .... unless you think also that a hard to drive speaker will play very well at almost zero power that is the question here .
If people use 'input impedance' and 'output impedance' interchangeably, which is what you suggest, then discussions about electronics will not make much progress. I have no idea what he meant to say.currentflow said:
That is exactly what I would expect. If 'dynamics' are affected by source impedance then this means that the amplifier has significantly nonlinear input impedance, so should have a buffer at its input to deal with this.east electronics said:
I am concerned that your expectations of electronics so often seem to be at odds with what actually happens.
You mentioned a passive pot, and then mentioned input impedance. The rules of English mean you were talking about the input impedance of the passive pot. I had no idea you were actually talking about the input impedance of the following amplifier, which is completely unaffected by whatever the pot is set to. So your statement are still wrong.Michael Chua said:
Sometimes reality can be counter-intuitive, for those whose intuition has not been well trained by correct understanding.east electronics said:
I have not commented on NP's opinion. Given your ability to misunderstand what other people say, it is quite likely that he says the opposite of what you think he says. As I understand him, he favours passive preamps. But so what? We are talking about the reality of circuits, which is not established by quoting gurus or taking a straw poll but by understanding facts. The facts are clear, whether you accept them or not.east electronics said:
No I did not. I said that speakers which needed a certain power in order to work correctly were faulty. Low sensitivity just means that they need lots of power before they can be loud enough. You still seem to misunderstand these two quite different situations. Can you not distinguish between 'quiet' and 'distorted'?east electronics said:
A non-faulty speaker will work fine at low power, but it will be quiet. Your category of "hard to drive" speakers is the same as my category of faulty speakers.
If simple facts cause you so much confusion then there is not much hope for the thread 'going right' (in your eyes).
DF96 its absolutely pointless to continue a conversation with you .... From my point of view you have a complete misunderstanding of how speakers work plus that your style of conversation will create an argument or a fight if you like ....
Just a few posts ago low sensitivity meant with your words """Low sensitivity means it plays softly (i.e. low volume)."""
While now you just wrote . I said that speakers which needed a certain power in order to work correctly were faulty. Low sensitivity just means that they need lots of power before they can be loud enough.
I am done here cannot be bothered with the thinks you write ...
Just a few posts ago low sensitivity meant with your words """Low sensitivity means it plays softly (i.e. low volume)."""
While now you just wrote . I said that speakers which needed a certain power in order to work correctly were faulty. Low sensitivity just means that they need lots of power before they can be loud enough.
I am done here cannot be bothered with the thinks you write ...
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