All items tagged with valves (154)
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.
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Get Technical with audioXpress July 2015, now available!
June 10, 2015 by audioXpress Staff

Get Technical with audioXpress July 2015, now available!

audioXpress July 2015 is one of those editions that we’re certain you will read immediately and keep close for a while, since there’s so much reference material included. We bring you the AXPONA 2015 Show Review, a great R&D Story explaining “The Birth of the World’s First True Software Radio,” great reviews, DIY projects and much more…
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Build a Low-Voltage Tube Hybrid Headphone/Line Amp
May 21, 2015 by Pete Millett

Build a Low-Voltage Tube Hybrid Headphone/Line Amp

Here’s a simple, safe, inexpensive project for beginners and those who wish to “try tubes.” Meanwhile the project has been tried, tested, approved and improved, become one of the classic DIY audio projects from the author. This article was originally published in audioXpress magazine, November 2002.
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A Low-Mu Triode Preamp
April 29, 2015 by Pete Millett

A Low-Mu Triode Preamp

In this article, originally published in audioXpress, February 2004, the author describes how to achieve low distortion from power triodes. As he explains, his preamp is “a little different from most, using low-mu power triodes to get good performance with only one amplifier stage, and no negative feedback. This achieves the modest gain required along with very low output impedance.”
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It’s Here! The Glass Audio DIY Special audioXpress May 2015 Edition!
March 31, 2015 by audioXpress Staff

It’s Here! The Glass Audio DIY Special audioXpress May 2015 Edition!

The Glass Audio Special edition is a tradition we have retained since the former title was merged with other magazines to become audioXpress. audioXpress still publishes tube-related articles, but we feel this is one of the highlights for our readers and it certainly is among our authors due to the amount of articles we receive — increasingly addressing applications outside of the typical high-end living-room stereos.
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A 211 SE Triode Amp
March 30, 2015 by Nick Soudas

A 211 SE Triode Amp

Attention, all first-time (or wanna be) builders of single ended directly heated triode amps. This project’s for you. This is an easy to build, simple direct-coupled input/driver circuit that provides the proper drive voltage to the grid of the 211. A nice way to experiment with a single-ended (SE) triode amplifier.
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A Versatile Line Amp for Preamp, Headphone, and Power Use
February 27, 2015 by Joseph Norwood Still

A Versatile Line Amp for Preamp, Headphone, and Power Use

Here’s a do-it-yourselfer’s dream in tube amp design: four operating modes, high quality, low cost, and low distortion. An article originally published by audioXpress in May 2007. A true versatile project which we think deserves to be shared.
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New Solid State Logic VHD Pre Module for the 500 Format Rack Platform
February 10, 2015 by audioXpress Staff

New Solid State Logic VHD Pre Module for the 500 Format Rack Platform

Solid State Logic announced the release of the VHD Pre Module for the popular 500 format modular rack platform. The release makes its patented Variable Harmonic Drive (VHD) and SSL SuperAnalog preamp technology from Duality, SSL’s large format studio console, available for studios of all sizes.
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The Audio Voice - Weekly Newsletter for audioXpress and Voice Coil Communities
November 22, 2014 by audioXpress Staff

The Audio Voice - Weekly Newsletter for audioXpress and Voice Coil Communities

Don't miss our newsletter, every week! The Audio Voice addresses the interests of both audioXpress and Voice Coil readership communities. A unique perspective for audio developers, manufacturers, marketeers, design and engineering houses, supply chain, and industry insiders. Every week, there's a rich mix of industry news and trends, product design and new technology highlights, trade-show calendar updates, a selection of free magazine articles, and much more, directly to your inbox.
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Hal Leonard Publishes Electronics Concepts, Labs, and Projects: Essential Electronics Theory for the Audio World
November 19, 2014 by audioXpress Staff

Hal Leonard Publishes Electronics Concepts, Labs, and Projects: Essential Electronics Theory for the Audio World

Hal Leonard published the book “Electronics Concepts, Labs, and Projects, Essential Electronics Theory for the Audio World” by Alden Hackmann. This is a complete introduction to essential theory relating to electronics principles specific to the audio world, including practical lessons on basic things from soldering to how to use an oscilloscope and function generator to diagnose circuits.
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