Influence of the delay amplifiers for listening characteristics

[PMA]

Federmann, here is discrete preamp and uA741 at 475kHz for expected output 4Vp. Also, a phase plot of uA741 (it falls to -10 ° at 180kHz, not at 475kHz)

Phase plots are simulated for small signal in MC!

 

[Federmann]

I'm not talking about topology, I'm not talking about frequency. I'm talking about the delay expressed in angular extent.

For all amplifiers will apply: delayed 10 °, it would Vdif = arcsinus 10°

Federmann, here is discrete preamp and uA741 at 475kHz for expected output 4Vp. Also, a phase plot of uA741 (it falls to -10 ° at 180kHz, not at 475kHz)

Phase plots are simulated for small signal in MC!

You are wrong 10 ° for 741 when 17.457 kHz, not at 180kHz!


Think, I wish good night.

 

[PMA]

I cannot find a ** flag 😎

 

[Upupa Epops]

Le it be...his students say: He was teleported from another galaxy...but brain was lost on the way....

 

[Federmann]

Once again, recall the beginning and involvement. Certainly your involved 741 same.

Vdif and conditions of the input amplifier.

 

[Upupa Epops]

We are adults, not your students, so let your stupid examples for them....

 

[Federmann]

I'd like just an amplifier with overall feedback. Scheme and delays.

Thank you very much.

 

[Upupa Epops]

Do you have still real results, Federmann ? Or only your never ending simulations ? We are tired by waiting....

 

[Federmann]

I asked about concrete results, not speech and repetitive questions.

Thank you.

 

[PMA]

Maybe mods might like to move this thread to 'Everything Else', there is nothing about solid state here.

 

[Upupa Epops]

We have real results, Federmann...and you ? Only theoretical blables and claims without listening verifications...

 

[Federmann]

Maybe mods might like to move this thread to 'Everything Else', there is nothing about solid state here.

Listening tests are already going. Confirmed the delay is shorter = better sound. Border delays the onset of distortion is heard is to be found. I say 158ns to 100 watts.

 

[Federmann]

We have real results, Federmann...and you ? Only theoretical blables and claims without listening verifications...

Listening tests are already going. Confirmed the delay is shorter = better sound. Border delays the onset of distortion is heard is to be found. I say 158ns to 100 watts.

 

[BV]

Listening tests are already going.

Used (compared) amplifiers in test? Other equpment (signal source, used speakers)?Or, as usual, again only simulation?

 

[PMA]

Maybe simulated listening tests (in MC11, 3D version).

 

[Federmann]

I view, that the maximum acceptable delay is 5.7 ° for the entire frequency band to 200kHz. Sinus 5.7 ° is exactly 1 / 10 output signal, but you certainly read on my web.
I'm interested in the views and experience of others.

I also wrote: „is exactly 1 / 10 output signal, but you certainly read on my web.“
There can read that 1/10 signal, the power output is 1/100 of 1%. We can talk about the distortion of 1%.

I'd like to return to the topic.

 

[Federmann]

The first measurement, so far without great comments.

Example of measurement delays.

 

[Federmann]

Topic has become disorganized. Soon I will add mathematical relation between delays, slew rate, bandwidth and voltage. All complemented by measuring the real amplifier.

Good night.

 

[Federmann]

Overall feedback vs. Local feedback

Overall feedback vs. local feedback and reserve gain

 

[Upupa Epops]

We can real measuring results and correlation with real listening, Federmann....where they are, do you have them ? We are not interested for your prehistory circuits from the year 65' or so...