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tube fanatic

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About tube fanatic

  • Rank
    tube amp designer

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  • Interests
    extracting the best possible sound from single ended tube amps using modestly priced designs and tubes.
  • My System
    Now specializing in extreme near-field desk top systems using flea power SEPs and SETs. This mode of listening must be experienced as it can be totally enveloping.

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  1. I don’t understand why individuals who are rejecting the “vaccine” are being vilified. Corruption and data falsification in the pharmaceutical industry is no secret (there is still lots on this to be found online), and the FDA is not totally innocent either. The concerns of so called anti vaxxers are well taken and I don’t personally know any who apply their belief to anyone other than themselves or their families. A friend, who won’t take the current “vaccine”, sent this link which highlights some of what I said: https://www.searcylaw.com/do-you-know/the-food-and-drug-administration-fda-approves-drugs-largely-based-on-information-provided-by-drug-companies/ Personally, I never trust data generated by a pharmaceutical company, especially since the Vioxx scandal. Add the total liability shield under which Moderna, Pfizer, et al are operating and being skeptical is justified. Maynard
  2. J &J product is temporarily suspended in US due to blood clots in 6 women. Not stated in the article, but in the news on NY radio station WOR, is that one died and another is in critical condition. All are between 18 and 48 years old. https://www.nbcnews.com/news/us-news/johnson-johnson-vaccine-should-be-paused-u-s-after-extremely-n1263898 Maynard
  3. Some women experience menstrual changes after receiving “vaccine.” The “experts” don’t seem to be concerned. I wonder if fertility issues or miscarriages will start manifesting over time. https://www.health.com/condition/infectious-diseases/coronavirus/can-covid-vaccine-affect-my-period Maynard
  4. Some additional information can be gleaned from this old thread on the forum: https://community.klipsch.com/index.php?/topic/34263-how-does-impedance-matter/ When one considers that the output impedance of some SEPs without feedback can hit 30 ohms or so, holding the speaker impedance to a narrower range is certainly valuable. My work with SEP spud amps (no fb) has been enlightening in this area and all the future builds will include an internal, switchable, snubber resistor. Such amps can really sound nice! The SET crowd snickers at us guys who still use pentodes...😄 Maynard
  5. This remedy addresses issues with pentode amplifier characteristics (high output impedance and high plate resistance) as opposed to deficiencies in crossover characteristics. I don’t know many audiophiles who would be qualified to reconfigure a crossover which, of course, would change what the manufacturer had in mind. Installing a resistor to make the amp “happier” is something anyone can do. Maynard
  6. Agree Mike! But that is the nice aspect of using Klipsch speakers most of which are so efficient (as you know!) that the power loss is not generally an issue. The resistor does not turn the speaker crossover characteristics into a purely resistive situation but will lower the effective impedance seen by the amp. The graph on the Zu link above demonstrates this. Even if the speaker impedance drops to 4 ohms, the resulting slight decrease should not be a problem. I usually use 27 ohms which covers most situations nicely. It is the very large impedance increases which the resistor really helps to contain. Maynard
  7. It is no secret that tube amp/speaker synergy is very important. This is especially true with single ended pentode amps which do not employ negative feedback and are sensitive to speaker impedance variations across the audio band. A trick which I, and others, in the design world have always used is a resistor across the amp output terminals, or speaker terminals, to keep the impedance the amp “sees” more constant (i.e.“flattening the curve”, an expression with which all are now familiar). It can make a huge difference and allow amp/speaker combinations which may not sound great to suddenly become glorious. So, it is gratifying to see a speaker manufacturer actually promoting such a tool: https://www.zuaudio.com/diy/loading25r The resistors they furnish can be purchased for a few dollars less but will not be matched. As someone who designs single ended amps which are used almost exclusively with Klipsch speakers, I can tell you that using the resistors can be a worthwhile tool. Maynard
  8. Do a search and you will find many highly credentialed docs and scientists who disagree with the mainstream view. Unfortunately, they have been branded as “quacks” and the self appointed social media arbiters have declared their work as being unfit for dissemination to the public. You know as well as I that only certain viewpoints are being permitted. Maynard
  9. Why is it that when a view which is not mainstream is presented it automatically becomes misinformation? It has long been known that vitamins C and D help the body fight respiratory infections (even Fauci admits to supplementing with them). It is also known that many are deficient in them due to exceedingly poor diets. The message should have been to do everything which may help a person from getting sick. These supplements are cheap enough for blanket recommendations. The same for non-standard treatments for hospitalized patients. When front line docs reported great success treating patients with 6-8 grams of IV vitamin C each day, why were they called out as spreading misinformation? I know why, but can’t state the reasons here. As for labeling those who promote common sense approaches to avoiding getting sick as anti-vaxxers I think it is ridiculous. I know many who will not put an experimental gene therapy in their body, and they could care less if someone else does. There are always different approaches to disease prevention and management and no one should be forced to use an approach with which they disagree as a condition of living their life (an example is denying an in person college education without having proof of taking the COVID product). Sorry to branch out a bit from the subject, but some things should be repeated periodically. Maynard
  10. Israel may release the names of the unvaccinated to authorities. In view of having 80% of the population inoculated, there should not be any further concern if the treatment is truly effective. If the same laws are passed here I believe people will be attacked if their unvaccinated status is somehow “leaked.” https://www.courthousenews.com/israel-adopts-law-allowing-names-of-unvaccinated-to-be-shared/ Maynard
  11. Post a clear close-up picture of the underside of the chassis in the Talkin’ Tubes section. I would like to see the condition. Maynard
  12. Travis, I appreciate your perspectives! But, as my 6’7” 300 pound attorney brother in law (who uses his size to great advantage in the courtroom) tells me constantly “you will never win an argument with an attorney”, I will concede until I have the time to state my case with more support documentation. I would enjoy listening to you and him discussing this issue 😄 Maynard
  13. Doctors are not telling patients that long term ramifications of putting this previously untested medical treatment in their bodies are unknown. If pressed, as some patients do, they will admit it. This is not misinformation, but simple truth. Informed consent is not being employed when it comes to these products. Anyone who has had surgery knows the detailed possibilities, including death, that could occur. If you will not sign, no surgery. As I said earlier, as long as we have personal choice in how we deal with the virus, all is well. But, if segments of society are forced to accept an experimental medical therapy as a condition of being allowed to participate, that is a different matter. The vaccine “passports” which are being rolled out will stigmatize those who do not comply. Some Jewish friends have drawn a parallel to something which cannot be discussed here. Maynard
  14. I cannot do that having seen too many instances of harm to people who did so. You mentioned polio as an example. There were issues with the early vaccines which were not initially known (or if known, not disclosed). My issue with the current therapy is that it is now being made a condition for receiving an in-person education (Rutgers, for example), and attending public venues/dining out/air travel, etc. (vaccine “passports”). This is where a very dangerous precedent is being set in my opinion. https://pubmed.ncbi.nlm.nih.gov/10472327/ Maynard
  15. I understand your skepticism about an agency which lies constantly. It is unfortunate that scientists who raise concerns about the mainstream view are immediately branded as “quacks” who are spreading misinformation. Some interesting points were raised in this Israeli article from January. Doctors and other medical personnel I know have raised similar concerns. https://www.israelnationalnews.com/News/News.aspx/294852 Maynard
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