Learning Vacuum Tube Amplifiers for Senior Design Project

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Discussion Overview

The discussion revolves around learning about vacuum tube amplifiers for a senior design project in electrical engineering. Participants share resources, personal experiences, and opinions on the advantages and disadvantages of vacuum tubes compared to solid-state amplifiers.

Discussion Character

  • Exploratory
  • Technical explanation
  • Debate/contested
  • Homework-related

Main Points Raised

  • One participant seeks comprehensive texts on vacuum tubes, emphasizing the need for materials that cover tubes in detail rather than as extensions of other components.
  • Another participant offers to share old radio and TV repair manuals from the 50s and 60s, including a specific manual on tubes, pending retrieval from their mother's place.
  • A suggestion is made to check Randall Aiken's bibliography for recommended books on vacuum tubes, with one participant expressing a positive opinion on Aiken's perspective.
  • Online resources are mentioned, with one participant sharing a Google search link that yields various results related to audio power amplifiers using vacuum tubes.
  • Some participants express skepticism about the claim that vacuum tubes are superior to solid-state amplifiers for audio, suggesting it may be an urban legend.
  • Another participant shares personal experiences with audio equipment, arguing that the characteristics of solid-state amplification do not always lead to a more pleasant listening experience compared to tubes.
  • A participant references a link from the Naval Electrical Engineering Training Series (NEETS) that provides a comprehensive treatment of electron tube theory and applications.

Areas of Agreement / Disagreement

Participants express differing opinions on the superiority of vacuum tubes versus solid-state amplifiers, with some supporting the idea of tubes being better for audio and others questioning this belief. The discussion remains unresolved regarding the perceived advantages of vacuum tubes.

Contextual Notes

Some discussions reference personal experiences and anecdotal evidence, which may not be universally applicable. The conversation includes a mix of technical resources and subjective opinions about audio quality.

seang
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Hey all;

None of my EE classes cover vac tubes since they're largely obsolete. The thing is, for my senior design project (I have a year or so, no rush.) I'd like to build an audio amplifier. From experience I know the advantages of vac tubes and am willing to put up with the drawbacks.

I was wondering if you know of any extremely good texts that cover tubes from top to bottom. I know nothing about them and will have to teach myself completely. IE a book covering a tube as an extension or special case of another element won't do. Help?

Thank you.
 
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I don't know whether or not this will be helpful, but I have a bunch of old radio and TV repair manuals from the 50's & 60's, including one specifically about tubes. They're at my mother's place, so it will take a while to get them. I'll give you the titles, authors and publishers so you can see if you can find them. Otherwise, I can probably e-mail or PM excerpts without violating copyrights.
 
You might want to check out Randall Aiken's recommendations. I have some of these books, and his "take" on them is pretty accurate, IMO.

http://www.aikenamps.com/Bibliography.html
 
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I know some audiofiles say that tubes are superior to solid state for audio amplifiers, but I don't see any reason for that. I believe it is only another urban legend.
 
SGT said:
I know some audiofiles say that tubes are superior to solid state for audio amplifiers, but I don't see any reason for that. I believe it is only another urban legend.
I am now in my mid-50s, and I can hear frequencies that teenagers hear that people my age typically cannot (mosquito ring tone). Please believe me when I tell you that extremely short rise-times and "accurate" SS amplification of input signals does not always equal "pleasant" music. My best stereo rig 25 years back was a set of Mac 30 monoblocs with a clean SS preamp and a pair of Klipsch speakers. Unfortunately, I moved frequently to follow construction jobs, and allowed convenience to rule. I went with a nice Sansui integrated amp with smaller Bose speakers that were better-matched impediance-wise. I want those Mac 30s back! :cry:
 
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I see some great links on berkeman's reference. I would also add the following link, part of NEETS (Naval Electrical Engineering Training Series). They outline a comprehensive treatment of electron tube theory and application.

Be sure to check out some of their other Elec Engr discussions.
 

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