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Vacuum Tube Amplifier Basics

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Description

There is a growing number of audio enthusiasts and hobbyist interested in creating their own vacuum tube amplifiers. If one has the necessary technical information, high quality tube amplifiers can be assembled. Although it is true that accurately calculating electronic circuits can involve complicated formulas, for the electronic hobbyist it is not necessary to perform at the level of an electrical engineer. With some basic knowledge, it is possible for the hobbyist to design and build vacuum tube audio amplifiers that perform well. For the novice not versed in electronics, several sections of the book cover electronic basics that pertain to vacuum tube circuits. Includes Ohms law, voltage, current, power and watts. Explains capacitors, series circuits, parallel circuits, voltage dividers, reading circuit drawings plus other related information. Principles of vacuum tube operation voltage amplifiers and power output are explained. Includes function of grids, effect of tube capacitance, tube resistance, heat dissipation, bias, miller effect and calculating voltage gain. A table of component values for the popular 12AX7 in various operating parameters simplifies pre-amplifier stage design. Power supply sections cover vacuum tube and solid state rectifier conversion of AC to DC and DC filtering. Amplifier design example takes you through the steps of designing a single ended ten watt amplifier with volume and tone controls. Working with electronics and vacuum tube circuits requires some math. Circuit calculations in this book use various forms of addition, subtraction, multiplication and division. Formulas are all solvable using a standard 12 digit calculator (requires a square root key). Calculations are presented with examples. Project layout circuits include a line amplifier with 25db gain, triode balanced-unbalanced input stage, tone control stage, turntable pre- amplifier, 6V6SE Class A stereo amplifier, 6V6SE Class A monoblock amplifier, 30 watt monoblock amplifier and a basic 5 watt guitar amplifier. The 30 watt monoblock amplifier is designed for tube rolling using various type output tubes. Read more

Publisher ‏ : ‎ CreateSpace Independent Publishing Platform


Publication date ‏ : ‎ August 26, 2014


Edition ‏ : ‎ 4th


Language ‏ : ‎ English


Print length ‏ : ‎ 210 pages


ISBN-10 ‏ : ‎ 1500938866


ISBN-13 ‏ : ‎ 64


Item Weight ‏ : ‎ 1.55 pounds


Dimensions ‏ : ‎ 8.5 x 0.48 x 11 inches


Best Sellers Rank: #1,443,024 in Books (See Top 100 in Books)


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If you place your order now, the estimated arrival date for this product is: May 8 – May 10

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Top Amazon Reviews


  • What the title says
This is a good book for someone who has little knowledge of electric circuits and no knowledge of how tubes do what they do. I did not need the basic electricity information but the tube information is kept deliberately simple so as to not overwhelm the reader. I now know a lot more about tube circuits and how they work. I can now follow the signal path through a wiring diagram. There is also a section on basic amplifier construction. I would recommend Vacuum Tube Amplifier Basics to anyone wishing to learn a little bit about the nuts and bolts of these devices. ... show more
Reviewed in the United States on March 10, 2024 by TM

  • If you are wanting to build an Audio Tube Amp for your Stereo, this is the book!!
Finally, I found it, a book on building tube amplifiers and you do not need an advance degree in Calculus to understand the theory. Very clearly written in plain English and easy to understand. Having worked as an electronic tech for the past 30 years, I can read and understand complex schematic. This book is fantastically easy to understand and if you are afraid of electrical schematics, the author has provide detail drawing of how the circuit is layout with component by component placement. I have purchased several other books that spent page after page with charts telling me how a tube or a transistor will perform. That stuff puts me to sleep and those books are in a pile labelled I'll will never read them. This book is totally different and so easy to understand. Another excellent thing about this book is, if the author is explaining how a portion of a circuit works, the drawing he is referring to is located in the same paragraph and not on the next page!! I really enjoyed reading this book and hopefully you will too. ... show more
Reviewed in the United States on April 26, 2023 by Robert Bonner

  • Well written with no fluff
If you work on stereo or guitar tube amps and have a basic understanding of electronic principals this is a great book. The books focus is not a bunch of theory, but clear explanations of the circuits you will run into inside any vacuum tube amplifier. There are the necessary ohms law, power equations and tube bias and power charts, but that's it. No calculus or other fluff you don't need to know to build or repair a tube amp. ... show more
Reviewed in the United States on May 9, 2023 by Dane

  • Good Project book and well worth it overall
If you just want to know how to make a Tube Amp for any purpose this is the book for you. It does cover introduction into electronics and then goes into specifics behind signal amplification. After that its directly into building simple yet effective amplifiers for practical use. 8 projects total using common tubes still available with source listings for the more difficult to find items such as audio and power transformers which can be purchased online and used for the projects presented in the book. Good Project book and well worth it overall. ... show more
Reviewed in the United States on October 26, 2016 by Ramiro Molina

  • Easy under standing
Well written, helped me under stand how my amplifier works better. I am a hobbiest, and a layman to amplifier technology but I wanted to know my amp better so I read some books this is a book that helped me figure somethings others have . It has some projects in it that any one can do but I would advise anyone like me to only do it if you have complete knowledge of amplifiers and how they work. I highly recommend for any one who want to know their amp and understand its workings. ... show more
Reviewed in the United States on November 5, 2022 by Marc

  • Good starting point. Not focused on guitar amps
This book is as complete an introduction as you can find. It is suitable for readers who have no prerequisite knowledge of electrical engineering and even the mathematics start from a very basic level. Despite that, it tackles the source material in enough depth that one could design and build a Hi-fi amplifier after reading it. Warning: the information in this book is about tube amplifiers in general but the author seems to have more experience with Hi-fi amps than guitar amps. The one guitar amp design the book discusses is an odd one that mixes the clean signal with the distorted signal in parallel rather than running the input through all the tubes in series. The author said that is typical for guitar preamps because people don’t want to hear a 100% distorted sound. As far as I know, none of the major well known guitar amps are designed that way. So if you are really interested in guitar amps this book is a good start but then you will need to read other books to learn material specifically pertaining to guitar amps. ... show more
Reviewed in the United States on April 17, 2020 by gnostic student

  • I keep returning to this book
I am a retired electronics engineer with very little knowledge of vacuum tubes. But in my 20's I used to build vacuum tube radios and amps, Heathkits, etc. I enjoyed that hobby so much I am resuming in retirement! I am reading several books all the time in my effort to learn, I look at schematics constantly, my wife thinks I'm having an affair with my parts and vacuum tube suppliers. I keep returning to this book because of one reason. The other books don't go into the actual test procedures like this book does. For example it shows how to hook up a harmonic distortion measurement test, frequency response test, and many other test procedures,old school using bench gear. Other books give you the theory and formulas, then they give you a few projects. Skipping entirely how to utilize my bench equipment, how to hook them up, how to interpret the results. It is hard to go from theory right into a build and you learn way more when you test your builds. This book gives theory, build AND testing procedures which is the area most other books neglect. ... show more
Reviewed in the United States on May 27, 2019 by Rick H

  • Great approach to designing all crucial parts of a guitar tube amplifier
I’m a disabled Electrical Engineer. My career was primarily focused on wireless until an extremely rare joint disease forced me to disability...But being an Engineer, i had started my own company...mostly musical electronics repair, but I decided to start doing some design and construction of tube amplifiers...Being an Engineer, I skipped over the basic electronics section...but I HIGHLY recommend having a good understanding of electronics before trying to build or work on any amps ..Voltages can get quite high and even unplugged amps can be a hazard due to voltage stored in capacitors...This book points this out...I have a library of Amp design books but I reference this book often...Because I know where to find the information I need...It is very well laid out and doesn’t get too heavy on the math...but he does include the most vital equations and how they relate to a tube circuit..The book also covers areas of the circuit surrounding the tube and what changes in capacitance or resistance can do for your tone...This is a keeper!...Always on my bench ... show more
Reviewed in the United States on January 15, 2020 by Robi01331

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