John Curl's Blowtorch preamplifier part II

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"Such arguments are usually based on dimensional analysis and effective field theory. If the universe is described by an effective local quantum field theory down to the Planck scale, then we would expect a cosmological constant of the order of M_{\rm pl}^4. As noted above, the measured cosmological constant is smaller than this by a factor of 10−120. This discrepancy has been called "the worst theoretical prediction in the history of physics!".[16]"


An error of 120 orders of magnitude. Richard's little misstep pales into an infinitesimal insignificance.

It seems, despite all the postulations and math, that in a practical sense what we know is purely excremental in the most fundamental sense of the word.
 
Can someone show Richard google? Entering 'Einstein biggest blunder' works very well.

This line of discussion shows up periodically, and soon we don't know how a simple amplifier works. Frankly it's a waste of time and has gotten very boring. Why don't we dwell on the extremely sophisticated experiments done decades later that confirm Mr. E to many digits of accuracy.
 
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soon we don't know how a simple amplifier works. Frankly it's a waste of time

Why don't we dwell on the extremely sophisticated experiments done decades later that confirm Mr. E to many digits of accuracy.

THAT would be a waste of time. This is just my simple reminder to the many opinions about what something 'sounds' like or doesnt.

As for the many digits of accuracy or precision of accuracy, I seem to remember also that the best minds and science research indicated what the rings of Saturn and the gases of the planet were made of. When a probe was finally sent there to measure it, most all of the excellent work to great precision was wrong.


Just keep an open mind when it comes to what other people perceive about audio. That is what I would like to see here. Most of the engineering for analog is known well enough to engineer just about to any spec. Though not everyone knows how on all fronts. So where would You like to take it?

For my own part, I suggested we look towards more in the area of distortion cancellation than only relying on GNFB. This is partly because the ps voltages are dropping and circuits do not always have the luxury of cascoding. That topic is being taken up in solid state forum. But we can talk about it here as well.


THx-RNMarsh
 
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This is just my simple reminder to the many opinions about what something 'sounds' like or doesnt.

Opinions and "sounds like" do not sound definitive but rather very relative to each individual observer. Which is actually OK, there are 100's of folks that wouldn't part with their SET's and 100+dB efficient horns and their opinion that this is how good it gets is perfectly valid to me.

On another topic I'm moving to a new venue and all the 4K TV's I've looked at make normal HD look like s**t, considering there is virtually no 4K content that I'm interested in are there any options?
 
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Well, I guess I am an early adopter and try anything new or at least take a look at it. I too saw great improvement with 4K. In California Comcast is upgrading its system to be able to stream 4K. Years ago, Comcast installed fiber optic lines to the neighborhood so they have plenty of BW. Last year I bought a 4K Samsung (curved display) and enjoy it very much, even on HD. It seems there are many other refinements added besides just 4K res. I would like to know more about those refinements.


THx-RNMarsh
 
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Well, I guess I am an early adopter and try anything new or at least take a look at it. I too saw great improvement with 4K. In California Comcast is upgrading its system to be able to stream 4K. Years ago, Comcast installed fiber optic lines to the neighborhood so they have plenty of BW. Last year I bought a 4K Samsung (curved display) and enjoy it very much, even on HD. It seems there are many other refinements added besides just 4K res. I would like to know more about those refinements.


THx-RNMarsh

I'll use the OPPO for the 4K system to come...... I had both eye lenses replaced via laser surgery and now have 20-20 for ever. So 4K isnt not wasted on me.

Now if I can do similar for my aging ears.


THx-RNMarsh
 
Opinions and "sounds like" do not sound definitive but rather very relative to each individual observer. Which is actually OK, there are 100's of folks that wouldn't part with their SET's and 100+dB efficient horns and their opinion that this is how good it gets is perfectly valid to me.

On another topic I'm moving to a new venue and all the 4K TV's I've looked at make normal HD look like s**t, considering there is virtually no 4K content that I'm interested in are there any options?

Make sure you look at the LG OLED TVs.

https://www.avforums.com/review/lg-65ef950v-ef950-ef9500-ultra-hd-4k-oled-tv-review.12014

Picture to die for and nice software.
 
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Joined 2005
On accuracy I will raise a glass to those who are still trying to measure the Michelson-Morley experiment. Now at a level of 10^-15 and still nothing unexpected.

Will a gravitational wave will be detected in our life times though?

Word on the street is it already has been detected. The LIGO people are being very cautious about the announcement, particularly after the BICEP2 snafu.
 
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