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Old 22nd November 2009, 11:07 AM   #21
PMA is offline PMA  Europe
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Quote:
Originally Posted by Federmann View Post
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Very flat, the acoustic band, looks characterization 741. Dependence Vdif the delay is something else entirely.
No.

The basic problem of the uA741 is very low slew rate, 0.5V/us. Compared to this, the circuit I am showing has a slew rate of 250V/us. Thus, it can never dynamically saturate in audio use, especially if RC input filter tuned somewhere at 500kHz is used.

I have also shown the full-scale, 24Vp-p output at 1MHz. With uA741, it is only 8kHz!!
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Last edited by PMA; 22nd November 2009 at 11:12 AM.
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Old 22nd November 2009, 11:08 AM   #22
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It is not proofs, Federmann! Did you make some well organized blind test with many persons ? With which results ? Do you can to write this ?
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Old 22nd November 2009, 11:09 AM   #23
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... Very poor uA741 gives poor results, nothing new.
Do you think that another good OZ, will be at delayed 10° better results?
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Old 22nd November 2009, 11:15 AM   #24
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Quote:
Originally Posted by Federmann View Post
Do you think that another good OZ, will be at delayed 10° better results?
Again, you speak about phase shift (and you do not mention frequency and slew rate).

Answer my question - I have shown 24Vp-p 1MHz undistorted measured, not simulated, output. You speak about uA741 that distorts at 8kHz full scale sine due to slew rate of 0.5V/us. Why do you use such example??

I replied here: Influence of the delay amplifiers for listening characteristics
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Last edited by PMA; 22nd November 2009 at 11:21 AM.
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Old 22nd November 2009, 11:15 AM   #25
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Do you think that another good OZ, will be at delayed 10° better results?
Try it, I did..
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Old 22nd November 2009, 11:20 AM   #26
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We are not talking about opamps, but about your statement, so answer! Or you don't understand ?
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Old 22nd November 2009, 11:42 AM   #27
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Quote:
Originally Posted by Upupa Epops View Post
We are not talking about opamps, but about your statement, so answer! Or you don't understand ?
First post

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I would like to ask what, who sees the link between delays and ...

Thank
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Old 22nd November 2009, 12:24 PM   #28
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Listening correlation, Federmann, listening correlation... How many times I must ask you, then I get answer ? Or are you Green hubby from UFO ?
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Old 22nd November 2009, 12:33 PM   #29
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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.
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Old 22nd November 2009, 12:44 PM   #30
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Again no answer...you have really good " input filter " for straightforward questions....
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