What is wrong with op-amps?

Status
Not open for further replies.
Jump to Latest
#3,141
bear said:
Strange.

You want me to prove that you do not trust your ears??

By what magical means do you propose that I or anyone else go about formulating such a "proof"?
Click to expand...

Not that, my statement was "the sibilance is due to the 1GHz frequency 1dB response peak". Prove me wrong.

And then I trust my ears to hear the sibilance, that's a different story and requires no proof.
 
#3,144
Kirchhoff said:
Tell me more on those power limitations, and how you need class AB to drive the next stage, especially when it has FET inputs.....
Click to expand...

I think you ought to go out more often.
Or, perhaps get a hobby?
I hear that the audio hobby is a good one, since you can both build things - which takes time - and enjoy the results even on snowy or rainy days... give that some consideration?

You know that what you wrote is essentially nonsense.
 
#3,145
Waly said:
Not that, my statement was "the sibilance is due to the 1GHz frequency 1dB response peak". Prove me wrong.

And then I trust my ears to hear the sibilance, that's a different story and requires no proof.
Click to expand...

What's with the proof thing?

You're the guy with the facts, right?
I'm the fool who thinks he can hear things.
So explain it to me, enlighten me!

I asked IF you actually heard sibilence, and why you assert that it was due to this opamp and not another. You need to provide some factual basis, lacking that some anecdotal information about your post.

Needless to say that if there was something that could be found in terms of measurements it would not likely have anything to do with anything going on at 1GHz that has a magnitude of 1dB difference than the rest of the spectrum.

So why are you deliberately screwing around, to be blunt?

Let's understand something.
Be 100% clear.
This is NOT a EE professional forum.
This is a DIY forum.
A VAST MAJORITY of readers do not have a EE and maybe lack the mathematical training to fluently follow a EE textbook.
So when you and others engage in this sort of game you are doing a disservice to the readers and the forum at large.

IF you have good information, just provide it.
Explain it.
Regardless of who you think is right or wrong.
Or who you think believes in "the magic tooth fairy"

And as far as being a EE professional forum, I've seen on the Electronic Design comment section on technical articles where apparently well trained EE's get it completely wrong too. So, few if any have ALL the answers to EVERY aspect of things electronic.

No matter how sharp and how smart you are, there's likely someone sharper and smarter.

In other words, pretending to be a superstar or acting like a superstar serves nothing but the ego - an insecure one at that.

_-_-
 
Last edited by a moderator:
#3,146
Most people wouldn't know music if it came up and bit them on the ***. (Zappa)
Same goes for sarcasm. And the real bad thing is that the absurdest
proposals have their guaranteed followers here.

Do you really think that someone building a GHz BW amplifier would
think to a moment to trust his ears to judge if it works or not?

bear said:
What's with the proof thing?

You're the guy with the facts, right?
I'm the fool who thinks he can hear things.
So explain it to me, enlighten me!

I asked IF you actually heard sibilence, and why you assert that it was due to this opamp and not another. You need to provide some factual basis, lacking that some anecdotal information about your post.

Needless to say that if there was something that could be found in terms of measurements it would not likely have anything to do with anything going on at 1GHz that has a magnitude of 1dB difference than the rest of the spectrum.

So why are you deliberately screwing around, to be blunt?

Let's understand something.
Be 100% clear.
This is NOT a EE professional forum.
This is a DIY forum.
A VAST MAJORITY of readers do not have a EE and maybe lack the mathematical training to fluently follow a EE textbook.
So when you and others engage in this sort of game you are doing a disservice to the readers and the forum at large.
Click to expand...

DIY does not mean that no minimum level of quality is required.
It must work, just like it must work and be safe if you rewire your house,
do some plumbing or waterproof your roof, even if you diy.
This is NOT a game, and it cannot be dumbed down until the last esoteric
feels he could make valuable design decisions.

Things are not as easy as they seem. Last year I did some mess involving
ceramic tiles; this will have to be redone. 🙁

regards, Gerhard
 
Last edited:
#3,147
Gerhard: +1

As I have said before, there is 100s if not 1000s of man years of real Engineering (and Physics and the odd stray Chemist) experience on here as well as practical trades. If someone is willing to listen they can learn. Everyone can learn something here. However there are glommers and rollers who not only don't want to learn, but think they know better due to some amazing ability to hear things that the mathematical models can't explain. It's their money and their home insurance and last time I looked we are mostly a free planet. Yet with each passing year the G&R mob do seem to get louder and more insistent. It's almost like the late 80s have come back to haunt us!

Ah well such is life. Currently listening to a 1948 recording of the Griller quartet. Remastered through nasty 8-legs and Cedar. It's really rather good in the context of recordings of the time.
 
#3,148
bear said:
I think you ought to go out more often.
Or, perhaps get a hobby?
I hear that the audio hobby is a good one, since you can both build things - which takes time - and enjoy the results even on snowy or rainy days... give that some consideration?

You know that what you wrote is essentially nonsense.
Click to expand...

Look in the mirror Bear. You're the one asking other people to build things for you. Like that 10 opamp chain. By this time you'd had a 100 opamp chain if you were serious about "the hobby" and spent some quality time with the soldering iron.
 
#3,152
bear said:
Let's understand something.
Be 100% clear.
This is NOT a EE professional forum.
This is a DIY forum.
A VAST MAJORITY of readers do not have a EE and maybe lack the mathematical training to fluently follow a EE textbook.
So when you and others engage in this sort of game you are doing a disservice to the readers and the forum at large.

IF you have good information, just provide it.
Explain it.
Regardless of who you think is right or wrong.
Or who you think believes in "the magic tooth fairy"

And as far as being a EE professional forum, I've seen on the Electronic Design comment section on technical articles where apparently well trained EE's get it completely wrong too. So, few if any have ALL the answers to EVERY aspect of things electronic.

No matter how sharp and how smart you are, there's likely someone sharper and smarter.

In other words, pretending to be a superstar or acting like a superstar serves nothing but the ego - an insecure one at that.

_-_-
Click to expand...
there is no 😛opcorn: emoji. but yea electronic is very broad and people specialize to a sector. but yea most of the time I sit back and see the nonsense here on this site.
 
#3,154
I think the comments about over-processing apply to somewhat earlier material. There will be very high quality and quiet source material for Decca 78's of that era so there wouldn't be much incentive for heavy-handed mastering. I would encourage anyone interested to explore the quartet recordings of the first half of the 20th century. Hats off to Dutton for reissuing this now almost forgotten British quartet.

The ubiquitous Cedar is certainly full of op-amps.
 
#3,156
Ah thanks, saves me going mad googling.

I should also note to the Cedar haters, that Michael Dutton has won a lot of awards for his resoration work. He was customer #1 for Cedar for commercial recordings so knows his stuff.

I am not well enough versed in the art to be able to compare his work objectively against say Andrew Rose at Pristine classical or Mark Obert-Thorn, but I am very pleased that they are plying their craft with such dedication.

I also like the nimbus Prima voce recordings where they used an accoustic horn and stuck a calrec soundfield mike in front of it. The Prima Voce Series
 
Status
Not open for further replies.
Top Bottom