TUT4 - The Ultimate Tone Vol. 4


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The Ultimate Tone Vol. 4 - Advanced Techniques for Modern Guitar Amp Design

By Kevin O'Connor, ©2006, ISBN 0-9698-608-0-X

     417 pages, 8-1/2" x 11", spiral bound with clear protective covers;
     548 figures (schematic diagrams)

     View the Table of Contents
     Read a magazine review of the TUT series

There's nothing new under the sun. Or is there?

Button to go to TUT4 table of contentsModern amplifier designers have an ever-expanding range of technologies from which to draw. When they design any new product, they have the choice to use tube, transistor, fet, integrated analog circuits or digital approaches, or any combination of these to achieve their desired goals for tone and cost. Smaller amp companies tend to experiment more with new ideas and new ways to get good tones compared to the Big Four, and it is these small companies who set trends in design.

The Ultimate Tone Vol. 4 - open bookLondon Power's products designed by Kevin O'Connor have set many design trends, which others are following. TUT4 has hastened this process by outlining, in schematic form, many approaches that achieve the goal of Power Scaling. The kits offered by London Power demonstrate certain methods of Power Scaling, but this text gives a complete history and discourse on the technology, outlining how to implement multiple Power Scale controls, alternative circuit forms and the system impacts. Fully integrated systems are presented with full explanations of the choice of components, choice of circuits and how to make seamless installations into existing equipment.

Further tutorials outline the methods for Super Scaling, with both fixed and variable boost ratios, using both solid-state and tube methods. True Super Scalers as designed by the author and built by London Power afford large-amp-loudness with small-amp-tone. Other systems touted as being "transparent" or "scaling" are shown for what they truly are: tone distorters.

Which TUT Book to Get First? - buttonPower Management in its greater context is explored, covering AC and DC current limiting, voltage restoration, voltage clamping, sag control systems both active and passive, and composite zener circuit applications - the latest trend in tube amp biasing. Mains noise abatement and line adjustment are also dealt with. In musical instruments amplifiers, power management is crucial to attaining great tone.

Expansive ideas filling technological voids.

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About London Power

London Power was founded in 1990 by Kevin O'Connor, after two decades of research into innovative audio amplification techniques. Kevin is an audio designer, author and speaker, known for his proprietary methodology called Power Scaling, and for his eleven books on audio subjects. Whether you seek amps, kits or information, you'll find useful answers here on not just the "how" but the "why" of audio amplifier design. Please enjoy the information on this site, and don't hesitate to contact us with questions.

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