John Curl's Blowtorch preamplifier part II

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1.) Super glad for the health improvements.
2.) Eeep. The China Study is an egregious example of the term: "There are three kinds of lies: lies, damned lies, and statistics."
3.) See: 1. You probably started paying good attention to what you are eating and cut out a lot of crap. To steal from Michael Pollen, "“Eat food. Not too much. Mostly plants."
4.) Back again to number 1.
My wife was running the FOK Movie and it all hit home for me. I jumped in head first, eyes closed. The trips to the Rite Aid BP machine verified exactly what the movie said would happen. 😉 This one time when I used machines to verify things.😀

I still take a B complex and some calcium pills.

Forks Over Knives | The Film
 
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MOV Distortion

Since order or linear discussion is not evident in these parts I thought I would interrupt whatever with a return to the MOV issue.
I just measured the distortion added by an MOV across a "signal" line.

Source generator through Optimation PA 50 amp and Optimation transformer and 130 Ohm resistor to 130V MOV at 120 Hz

Voltage source distortion loaded distortion
100V .055% .055%
110V .061% .063%
120V .070% .070%
130V .077% .086%
140V .085% .336%

In other words below the threshold voltage the MOV is essentially a benign ceramic cap. If you are hearing effects they would be either the noise being shunted by the capacitance or your line voltage is too high.

The capacitance of this 20 mm 130V MOV is 2.2 nF at 120 Hz and drops to 1.8 nF at 10 KHz. Not sure why.

(sorry for the less than clear chart. DIYaudio sometimes defies formatting)
 
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Chris719, I think you have a rather cynical opinion about what happens when we make new audio products and they get reviewed by a magazine.
It could sometimes happen in the way that you think it does, but my experience shows different.
Over the many decades there have been magazines that mostly review what products that are advertised in them. Stereo Review and High Fidelity come to mind here. However, other magazines like Audio, Stereophile and TAS were more outreaching in their reviews. I certainly would never have been reviewed by any of these magazines if my advertising in them mattered.
It is true that a known 'successful' designer might get more attention, but this isn't necessarily the case. Just this month, a former contributor here, JAM, got a good review in Stereophile, and he is a relative unknown to the editors. He got the review, because he made a serious design and it deserved a review.
For realistic reasons, BAD REVIEWS are generally discouraged by reviewers and manufacturers alike. A bad review, while perhaps an honest one, might potentially bankrupt a new, struggling, audio company, I know this from experience, and the reviewer, might have just had a bad fit with the product, but the damage will be done, if the bad review is published, so sometimes reviewers pull reviews just to spare the destructive process. Usually, success or failure of an audio product will sort itself out through sales and dealer interest.
Now this does not address another problem that is that the MEASUREMENTS might be sometimes lousy, but the subjective review is positive. I know that many meter readers here think this is crazy, but it really happens! Some products do sound good (at least) but measure lousy. And sometimes some products measure almost perfectly, yet sound kind of lousy. Nothing you can quickly put your finger on, but it still sound kind of lousy. This has happened to me on at least two occasions with power amps. Trust me, I needed a second opinion as to what was wrong, to get it right, and it didn't make the measurements significantly different, but that is what makes all the difference sometimes. It is the NEGLECTED things, like lousy RCA connectors, wire, caps, layout, transformer phasing, etc. that can make a remarkable difference. This is what creates repeated successful audio designs.
All in all, most audio reviews are useful to both the designer and the potential user alike.
 
Err, not quite. He went all in on paying attention to his diet. The FOK part, well, but there's more than enough causality towards paying attention to what goes in your mouth (whatever diet you ultimately partake in) and healthful outcomes.

The FOK part is pure, unadulterated, mil-spec, wallet emptying, I bought my Phd on the internet*, FUD based BS.

The correlation is watching what you eat. In the same way that time and motions studies in many cases just proved that people work harder when someone is standing over them with a clipboard and stopwatch! To get healthier does not require some fad, just taking a good hard look at what you eat and adjusting a few things. But like cables tuning audio systems people want the latest pin-up guru every week to tell them that following X will save them. My in-laws follow Swami Ramdev who claims breathing exercises will cure cancer. Wouldn't get wound up but my father in law is FRCS.

*followers of Ben Goldacre's bad science website will know what I mean.
 
Daniel: Glad we are on the same page

Robert: Dairy is a vital part of a balanced diet. Cutting that out without working out where you are going to replace the missing nutrients is not a good long term strategy. Your liver will hold you for a while of course. Hopefully your netflix video explained all of this.

For me, best part of going vegetarian is that there is no argument about whole milk 🙂
 
Joel and Daniel Salatin and Polyface Farms.

The middle ages called and want their farming methods back 🙂. Over here a certain heir to the throne of England has been doing this for longer than I have been alive. It does often scare me how out of touch some people (not saying anyone here) is with where food comes from. Mind you I am only 2 generations from being a full yokel...
 
I assume that any diet and nutritional "information" is suspect at best. We can't really do controlled experiments, so the data are dicey and seem to change with the seasons. Examples of Opposite Day include alcohol, salt, caffeine, red meat...

I don't pretend that my diet is healthier, it's just one that I'm comfortable with. Julia Child is my hero.
 
SY, there's some definite trends, but X diet vs. Y diet is, as you suggest, dodgy. And the usual rule of "if it promises a lot, scant on evidence, then it's probably a false", applies here as it does in audio.

I certainly didn't take any sort of air of superiority on anyone's behalf.

Aaaaaaand back to audio?
 
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