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Tubes and Circuits Paperback – 17 Jul 2012

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Product details

  • Paperback: 268 pages
  • Publisher: CreateSpace Independent Publishing Platform (17 July 2012)
  • Language: English
  • ISBN-10: 1477532862
  • ISBN-13: 978-1477532867
  • Product Dimensions: 15.2 x 1.5 x 22.9 cm
  • Average Customer Review: 3.8 out of 5 stars  See all reviews (6 customer reviews)
  • Amazon Bestsellers Rank: 479,765 in Books (See Top 100 in Books)

Product Description

About the Author

Bruce Rozenblit is the President and Chief Engineer of Transcendent Sound, Inc., which specializes in vacuum tube audio kits for the DIY audiophile. He specializes in OTL (no output transformer) amplifiers that produce maximum fidelity. He holds a U.S. patent in amplifier design. He has been professionally involved in the audio industry since 1996, a lifelong audiophile and started working with tubes by 1985. This is his third book on audio technology.

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Customer Reviews

3.8 out of 5 stars
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Most Helpful Customer Reviews

3 of 3 people found the following review helpful By Valve Nut on 26 Feb. 2014
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I never thought I'd have to say this, but it spends TOO long on the fundamentals. Out of 268 pages, 148 cover elementary phyiscs and electronics, starting with stuff like speed, velocity, force, and work. It eventually gets up to a fairly lengthy discussion of the construction of valves, even going on to cathode chemistry and solid state conduction, and the potential distribution inside various valves. Interesting, I suppose, but practically useless.

Finally on page 149 he gets to the good stuff -some basic valve circuits, but it's a whistle-stop tour that lasts 55 pages. Power supplies get a whole 7 pages.

Then he presents his pride and joy -a couple of OTL projects (although the interior photos look distinctly amateur -all rats nests). Also a simple tube tester is included. I wouldn't dare connect my speakers to one of his OTLs mind you; they have no offset protection at all.

Anyway, it's a weird book. It seems like a beginner's physics/electronics book that suddenly has a couple of exotic tube amp circuits bolted on the end! With precious little valve electronics in the book, it certainly is NOT "the most up to date and comprehensive vacuum tube design book currently available."

And all his battery symbols are backwards.
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1 of 1 people found the following review helpful By Werner Van Der Cruyssen on 9 Jun. 2014
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....as long as it's a OTL triode one that will require 8 tubes in parallel consuming humongous amounts of energy and heating your entire house in the process, just to drive a speaker to an acceptable level.

Joking aside, there are some good parts to the book (notably the part about interpreting tube constants and graphs) but it's mainly a hodgepodge of electrical theory and topics that sometimes go too much in depth and sometimes barely scratch the surface. Then suddenly it's all over and circuits are treated. As I said, the author specialises -via his company- in OTL amplifiers. I'm not a fan but they merit mentioning and it's only normal that a couple of circuit examples are treated. But it's not normal that the same information is not provided for push-pull amplifiers, output transformers, feedback mechanisms....

I would not recommend this book, the good parts can be found in open source works such as the Radiotron handbook. Save the money and invest it in more complete and didactic works such as those by Morgan Jones, also available on Amazon.
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By Tomas Kallman on 14 April 2015
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Hands on facts about physics and inspiring reading on how to design tube circuits plus best of all diagrams of two OTL amps
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