All items tagged with valves (154)
A Great First Amplifier Project
April 18, 2016 by Rick Spencer

A Great First Amplifier Project

Here is an excellent beginner’s project for those just getting started in this hobby. This “little” amp is easy to construct and has only about 25 parts in each channel. The system transformers are very inexpensive, and the total cost involved for a complete stereo version should be very minimal! This article was originally published in audioXpress, December 2001.
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It’s May Again, and Time for the audioXpress Glass Audio Special!
April 8, 2016 by audioXpress Staff

It’s May Again, and Time for the audioXpress Glass Audio Special!

Are you interested in tube projects? Then audioXpress May is for you. There’s amps and preamps for everyone in the best DIY tradition of Glass Audio. audioXpress May also offers innovation in new technologies, from software to audio networking and immersive audio, and this issue includes a nice combination of all these topics.
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Choosing and Using Electronic Parts: A Survival Guide, Part 3
March 25, 2016 by Charles Hansen

Choosing and Using Electronic Parts: A Survival Guide, Part 3

Here’s the final section in our series on parts reliability, how to choose them and how to estimate their life expectancy. In the third part of this article, the author continues to examine electronic components, and discusses what we can do about reliability. This article series was published in audioXpress, from November 2001 to January 2002.
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Choosing and Using Electronic Parts: A Survival Guide, Part 2
March 23, 2016 by Charles Hansen

Choosing and Using Electronic Parts: A Survival Guide, Part 2

Everything you need to know about how parts function, and how to select and maintain them. In the second part of this article, the author continues to examine electronic circuits with a look at some common circuit components, like resistors, semiconductors, diodes, small signal transistors, power Semiconductors, and microelectronics. This article series was published in audioXpress, from November 2001 to January 2002.
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Designing Audio Products for Work or Fun? Don’t Miss audioXpress April 2016. Now Available!
March 14, 2016 by audioXpress Staff

Designing Audio Products for Work or Fun? Don’t Miss audioXpress April 2016. Now Available!

Three great amplifier designs, practical test and measurement, acoustical treatment advice, and more are all included in audioXpress April 2016. Building new audio products with audio networking? Then don’t miss this month’s Standards Review article on RAVENNA/AES67 development.
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Focus on Test & Measurement and Download audioXpress March 2016 Now!
February 17, 2016 by audioXpress Staff

Focus on Test & Measurement and Download audioXpress March 2016 Now!

“I Can Hear It. Why Can’t I Measure It?” is the title of an excellent article written by Dan Foley and featured in this month’s issue. It could also be the slogan for our audioXpress March 2016 issue, which focuses on Test and Measurement. We tried to combine reviews, and practical and theoretical perspectives for this issue. Download it now!
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The ImPasse Preamplifier
February 6, 2016 by Stuart Yaniger

The ImPasse Preamplifier

Stuart Yaniger wrote a great article for audioXpress in February 2009, The ImPasse Preamplifier, describing a tube preamp to drive a pair of Nelson Pass’ First Watt F4’s (or other low-to-unity-gain power amplifiers) in balanced mono. Yaniger’s preamp is truly an elegant design with very, very low distortion, using a 6SN7 to drive a 6922 in balanced mode. There are LED’s, NE2H neon lamps and depletion MOSFETs in the design.
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Must Read for Audio Designers: audioXpress February 2016 Now Available
January 12, 2016 by audioXpress Staff

Must Read for Audio Designers: audioXpress February 2016 Now Available

This month, audioXpress features an updated version of the Willow amplifier, especially designed for the DIY community, and a three-way loudspeaker project with an external active crossover network. We visited Eighteen Sound in Italy, discuss experiments with Dolby Atmos, audio networking development based on Audinate’s Dante technology and learn how to measure Reverberation Time (RT). And if you are interested in recreations of the famous Fairchild compressor/limiters, rectifier tubes, and how to properly test tubes, don’t miss this month’s audioXpress.
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Sennheiser Orpheus Recognized as CES 2016 Innovation Awards Honoree in Two Categories
January 11, 2016 by audioXpress Staff

Sennheiser Orpheus Recognized as CES 2016 Innovation Awards Honoree in Two Categories

Sennheiser has been named a CES 2016 Innovation Awards Honoree for its state-of-the-art Orpheus headphones. The electrostatic headphone system has been honored in both the ‘Headphones’ Category and the ‘High Performance Home Audio-Video’ Category. Sennheiser’s Orpheus, which will be hand-crafted in Germany and available from mid-2016, impressed the jury with its combination of innovative technology with carefully selected materials and highest-quality craftsmanship.
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JFETs: The New Frontier, Part 2
December 29, 2015 by Erno Borbely

JFETs: The New Frontier, Part 2

The basic circuits on which Erno Borbely based most of his projects are described in “JFETs: The New Frontiers, Part I and II,” published in Audio Electronics AE 5/99 and 6/99, and “All-FET Line Amp,” published in audioXpress May 2002. As the author admits, these were the “building blocks” on which many - if not all - of his amplifiers are based. This articles continues his JFETs series and was originally published in Audio Electronics, Vol 5 1999.
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