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Old 25th December 2011, 12:25 AM   #81
tvrgeek is offline tvrgeek  United States
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There is also a well understood principal that if you designed it, you will think it is better. It is terribly hard to be totally objective about your own work. Some can overcome it, some never do. This principal has a gentleman's name, but I regret I do not know it to give him proper credit.
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Old 25th December 2011, 12:26 AM   #82
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Quote:
Originally Posted by tvrgeek View Post
I offer a premise: If two amps sound different, at least one of them is wrong.
I disagree: they are just different.

They may have different flaws.
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Old 25th December 2011, 12:28 AM   #83
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Right, ThorstenL.

Like quantum radiation from the event horizon of a black hole, I don't think?

Let's see how much regard TL (a principal offender) has for accuracy...

Quote:
Originally Posted by ThorstenL(from Thorsten's tube Stage for TDA1541A) View Post
...according to D. Self the NE5532/NE5534 is already pretty much the best audio amplifier there ever was, is and will be, so if you want to be a follower and believer of Mr. Self, why bother with anything else but a 5534?
And from D. Self's article on parallel 5532 amplifiers

Quote:
Originally Posted by D. Self
While not exactly a brand-new design, the type (NE)5532 dual operational amplifier (opamp) is a very capable device giving low distortion with good load-driving capabilities, and a remarkably good noise performance. It is only quite recently that better opamps for audio work have become available.
TL just doesn't hesitate to misrepresent a respected engineer's position in the hope of WINNING.

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Originally Posted by Pano View Post
Thanks CC, now tell us what you really think. Nicely complimentary to the good folks here on the forum, your fellow members. And a Merry Christmas to you, too.
Respect for other members is automatic, Pano, until they themselves forfeit it. My gift to you this Christmas: an honest opinion.
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Old 25th December 2011, 12:30 AM   #84
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Quote:
Originally Posted by tvrgeek View Post
Wave,
There is also a well understood principal that if you designed it, you will think it is better. It is terribly hard to be totally objective about your own work. Some can overcome it, some never do. This principal has a gentleman's name, but I regret I do not know it to give him proper credit.
Do you mean Peter Walker designed wrong things?

I don't agree with your logic.

My main design criteria always are, how close the thing sounds to real sound. If I am still working, and never said that I've done the work of my life, you are plainly wrong.
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Old 25th December 2011, 12:44 AM   #85
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Quote:
Originally Posted by counter culture View Post

TL just doesn't hesitate to misrepresent a respected engineer's position in the hope of WINNING.
.
TL himself is a respected designer. The difference between their activity on the forum is, TL honestly answers question and explains his position, while DS does not: he writes articles and promotes them, ignoring direct questions.
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Old 25th December 2011, 01:00 AM   #86
tvrgeek is offline tvrgeek  United States
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Originally Posted by Wavebourn View Post
I disagree: they are just different.

They may have different flaws.
I said at LEAST one is wrong. That suggests they may BOTH be wrong.
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Old 25th December 2011, 01:33 AM   #87
Jay is offline Jay  Indonesia
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Quote:
Originally Posted by counter culture View Post
TL just doesn't hesitate to misrepresent a respected engineer's position in the hope of WINNING.
Why it has to be about winning or losing (or psychology at all)??? Well respected engineers may not have good ears. That's why a thread like this. So we can learn different things from different engineers.
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Old 25th December 2011, 01:40 AM   #88
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Quote:
Originally Posted by tvrgeek View Post
I said at LEAST one is wrong. That suggests they may BOTH be wrong.
Also, one of them can be BETTER
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Old 25th December 2011, 01:45 AM   #89
wahab is offline wahab  Algeria
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Quote:
Originally Posted by CopperTop View Post
Peter Walker of Quad claimed never to have listened to his amplifiers, merely to have checked that they worked properly by measuring them. Yet they sold by the hundreds of thousands in various topologies to enthusiastic customers, including audiophiles, musicians, recording studios, the BBC etc. Was it all just a fluke*? A triumph of marketing?

*No, not his multimeter.
I guess that in 1967 , an SS amp that was AB biaised , thus not
being a fireplace , while being capable of 25W RMS /8R with
a THD below 0.1% at 10KHZ and below 0.01% at 1KHZ , wasnt
very common , not counting a very good frequency response
despite a little lack at low frequencies due to its 2000 uF only
output coupling cap...

Such was the advance of the 303 model that all following
models did sell very well , whatever their real or supposed qualities...

Last edited by wahab; 25th December 2011 at 01:48 AM.
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Old 25th December 2011, 01:48 AM   #90
tvrgeek is offline tvrgeek  United States
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I am not disparaging Mr. Walker at all. I always rather liked his stuff. I am just highlighting that a principal of human nature makes it difficult to be totally objective about your own work. I would not be surprised if he knew that as well. You may be one of the select lucky few that can accurately judge your own work. Most of us fall victim to our egos so it is best to have peer review. I really wish I knew the name of the principal. I keep thinking it was Brown, but that is not right. That class was a long time ago.

I agree, the 5532 was a HUGE breakthrough. If well used, it is still competitive for a lot of applications. It is the chip that started to take the bad name away from op-amps in high end that the TL082 could not quite do. But the newer chips are even closer to the textbook op-amp. Maybe even "good enough". I mentioned the National chip as it is a DIP-8 so easy to drop in. There are many smt chips in the same league.
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