The Tube Preamp Cookbook Allen Wright [UPD]
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The Tube Preamp Cookbook: A Guide to Building Your Own Valve Preamp
If you are interested in designing and building your own tube preamp, you may want to check out The Tube Preamp Cookbook by Allen Wright. This book is not a beginner's guide to tube amps, but rather a collection of tips, tricks and recipes from a seasoned audio chef who has been experimenting with valve preamps for decades.
The book covers topics such as tube types, power supplies, gain stages, feedback, tone controls, phono stages, balanced circuits and more. It also includes schematics and descriptions of some of Wright's own preamp designs, such as the Vacuum State Electronics FVP and RTP series. Wright explains the rationale behind his choices and shares his insights on how to achieve the best sound quality from your preamp.
The Tube Preamp Cookbook is not a glossy or polished publication, but rather a low-key and low-budget one. The layout is inconsistent, the schematics are hand-drawn and the format is horizontal A4. However, the content is valuable and informative, and reflects Wright's passion and expertise in tube audio. As he writes in the introduction: \"This book is about how to make things sound good too.\"
The book is available online from Vacuum State Electronics for US$40. You can also find some reviews and discussions of the book on websites such as TNT-Audio and diyAudio. If you are looking for a source of inspiration and guidance for your tube preamp project, you may want to give The Tube Preamp Cookbook a try.
If you are ready to start building your own tube preamp, you may want to consider some design tips that can help you achieve optimal performance and sound quality. Here are some of them:
Choose a tube type that suits your needs and preferences. Different tubes have different characteristics, such as gain, impedance, distortion, noise, microphonics and reliability. Some popular tube types for preamps are 12AX7, 12AU7, 6SN7, 6SL7 and ECC88. You can also experiment with different brands and vintages of tubes to find the ones that sound best to you.
Design a suitable power supply for your preamp. The power supply should provide clean and stable voltages for the tube filaments and plates. You can use a transformer, a rectifier, a filter capacitor and a regulator to build a simple power supply. You can also add some additional components, such as snubbers, chokes, bypass capacitors and bleeder resistors to improve the performance and safety of the power supply.
Use a source selector switch to choose between different audio inputs. The source selector switch should be followed by a tube stage or a large value potentiometer that is connected to a tube stage. A potentiometer must always be followed by a tube stage, unless it is a stepped attenuator with low impedance output. A tone control circuit must also be preceded by a tube stage.
Choose a suitable circuit topology for your preamp. There are many possible circuit topologies for tube preamps, such as common cathode, cathode follower, SRPP, mu-follower, cascode and more. Each topology has its own advantages and disadvantages in terms of gain, impedance, distortion, bandwidth and noise. You should choose a topology that meets your requirements and preferences.
Optimize the component values for your preamp. The component values affect the performance and sound quality of your preamp. You should choose the component values that provide the desired gain, frequency response, distortion, noise and stability for your preamp. You can use a modeling program or a test setup to calculate and measure the component values.
By following these design tips, you can build your own tube preamp that sounds great and works well. Of course, you can also modify and customize your preamp according to your own taste and creativity. The Tube Preamp Cookbook by Allen Wright can provide you with more information and inspiration for your tube preamp project. aa16f39245