All items tagged with Jan Didden (34)

Book Review: A Look Inside Bob Cordell’s Designing Audio Power Amplifiers, 2nd Edition

December 18, 2019 by Jan Didden

Book Review: A Look Inside Bob Cordell’s Designing Audio Power Amplifiers, 2nd Edition

We know many of our readers will enjoy this extended book review by our technical editor, Jan Didden, about Bob Cordell’s Designing Audio Power Amplifiers, 2nd Edition. When Cordell published his long-awaited first edition of Audio Power Amplifier Design, it was hailed as a significant addition on the subject. Reactions of readers made it clear that Cordell hit his mark, and in this article, Didden explains why the long-awaited second edition is an essential buy. This review was originally published in audioXpress, October 2019.

You Can DIY! A High-Voltage Delay for Tube Amplifiers - The Sequel

October 9, 2019 by Jan Didden

You Can DIY! A High-Voltage Delay for Tube Amplifiers - The Sequel

In this project for audioXpress magazine, Jan Didden offers a modern update on his original 2014 high-voltage delay design, which he built to complement tube amplifiers. The new unit needs no additional outside power, and allows setting the delay between 20 seconds and 254 seconds, which should cover all requirements. The article describes the complete project, and there's a DIY kit available at diyaudio.com. This article was originally published in audioXpress, November 2019.

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audioXpress September 2019 Speaker Focus Edition Now Available

August 8, 2019 by audioXpress Staff

audioXpress September 2019 Speaker Focus Edition Now Available

The September edition of audioXpress is our always popular Speaker Builder - Speaker Focus edition. Once again, audioXpress focuses on loudspeaker building, design, and testing and for this issue we have combined two great DIY articles with a review of the PureAudioProject Trio15 Heil AMT speaker system. Ward Maas reports from the High End 2019 show in Munich, Jan Didden met with Purifi Audio's Bruno Putzeys and Lars Risbo and comments on the company's research, and much more.

T-reg: A High-Voltage Regulator for Tube Amps

November 1, 2017 by Jan Didden

T-reg: A High-Voltage Regulator for Tube Amps

Tube amplifiers can benefit from regulated and stabilized power supplies, especially sensitive preamplifier stages, but also (single-ended) power amps. But traditional high-voltage regulators add several extra tubes, complexity, and power losses, while good performance is not easy to obtain. This article, published in audioXpress, April 2009, describes a novel design that is very simple yet offers excellent performance. Output voltage is fully adjustable with a single resistor without any compromises in performance.

Kii Audio's Three: The Next Step in Loudspeaker Evolution

January 16, 2017 by Jan Didden

Kii Audio's Three: The Next Step in Loudspeaker Evolution

audioXpress January 2017 featured the much-anticipated review of the brand new Kii Three speakers from the company everyone’s watching, Kii Audio. “The Next Step in Loudspeaker Evolution,” as Jan Didden and Paul Wilke titled their review, examines whether the Kii Threes are effectively “the most advanced loudspeaker on the market today,” as is claimed by Kii Audio. Learn what they discovered in this definitive review, now available online here.

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Better Discernment with Linear Audio Volume 12, Now Available

October 17, 2016 by audioXpress Staff

Better Discernment with Linear Audio Volume 12, Now Available

Linear Audio Vol 12 is the 13th issue of a series of printed bookzines dedicated to technical audio and perception. Published every time Jan Didden things he has good enough content, Linear Audio is a vehicle for publishing technical information, developments and the state of the art of audio from a technical perspective. And this latest edition includes great articles by Chris Paul, Pierre Touzelet, Bill Waslo, Vincent Thiernesse, Hans Polak, Douglas Self and more…

SilentSwitcher Mains-Free Low-Noise Power Supply Launches on Kickstarter

September 27, 2016 by audioXpress Staff

SilentSwitcher Mains-Free Low-Noise Power Supply Launches on Kickstarter

Here’s something close to our hearts. This project from our own technical editor and renowned publisher of the famous Linear Audio bookzine collection, Jan Didden, is now campaigning on Kickstarter. With audio projects steadily getting smaller, the SilentSwitcher is an ideal low-noise +/-15V & 5V power supply board for mixed analog/digital projects with no audible noise, no mains hum, no RFI and minimal heat.

More Audio Creativity Now Available in Linear Audio Volume 11

April 19, 2016 by audioXpress Staff

More Audio Creativity Now Available in Linear Audio Volume 11

Linear Audio Volume 11 is now available and includes excellent tutorials by Gary Galo, Hans Polak, Giovanni Stochino, Michael Kiwanuka, Guido Tent and Burkhard Vogel; articles on Circuit Design by Dimitri Danyuk and Douglas Self; articles on Room Acoustics by Hannes Allmaier and Bill Waslo, book reviews, and much more.

Musicality and Distortion: A Conversation

July 8, 2015 by Jan Didden, Dennis Colin and Jean Hiraga

Musicality and Distortion: A Conversation

Three audio experts discuss the role of distortion levels in what we hear. The debate was caused by an article titled “Amplifier Musicality - A Study of Amplifier Harmonic Distortion Spectrum Analysis” by Jean Hiraga, which originated comments by Jan Didden, Dennis Colin and a subsequent response by Jean Hiraga. The original article appeared in audioXpress March 2004 and the resulting conversation was published in audioXpress October 2005.

Linear Audio Volume 9 Is Now Available

May 18, 2015 by audioXpress Staff

Linear Audio Volume 9 Is Now Available

Linear Audio 9 is the tenth volume in a series of bookzines dedicated to audio technology and perception. Linear Audio offers a variety of articles written by an international team of authors and accredited academics on a plethora of engaging subjects, from tutorials to circuit and system design, test reports and book reviews.

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