audioXpress August 2021 Focus on Acoustics Issue Now Available

The August 2021 edition of audioXpress is now available in print and online. Read our Acoustical Solutions Round-Up 2021 and enjoy the DIY perspectives from Ethan Winer and Thomas Perazella on dealing with room measurements and treatments. David Logvin reviews Audio Precision's APx517B Acoustic Audio Analyzer, while Richard Honeycutt reflects on acoustic challenges for online and in-person meetings. And we conclude the DH-220C MOSFET Power Amplifier article by Bob Cordell and Rick Savas, and the VSCS Amplifier project in this edition.

One of the problems when designing large audio devices, (e.g., mixing consoles) is the enormous amount of wiring that’s needed. In this article for audioXpress, Ethan Winer writes about the practical ways on how to deal with wiring techniques in order to reduce the amount needed for any given project by using rotary encoders, serial communications, and other clever solutions. This article was originally published in audioXpress, March 2021

For this edition of audioXpress, start with our valuable Market Update on Audio Test and Measurement, followed by an interview and guided tour of QuantAsylum. From a practical perspective, Stuart Yaniger shares his experience with the latest version of Virtins Multi Instrument Measurement Software, Michael Steffes explains how to explore an interesting composite amplifier structure for great results, Mike Meechan continues his series on microphone preamplifier design, and Ethan Winer explains how to avoid too much wiring in large designs. Another great edition of audioXpress, now available to read in print and online.

We looked at the most-read articles of 2020 in audioXpress.com (which also includes selected articles from Voice Coil magazine), and we created this Top 10 list of news stories and online articles. 2020 was another record-breaking year for audioXpress.com, with visitors from all over the world returning often to read the more than 6,600 stories available. Which of the topics and stories published online in 2020 were the most popular? Here are the results!

Another great research article from Ethan Winer, where he designed a simple device that measures capacitor distortion using a USB sound card and free software to try and determine the importance of high-quality capacitors in the signal path. This article details the results of his tests with different capacitor types. This article was originally published in audioXpress, May 2020.

audioXpress May 2020 Glass Audio/Tube Focus edition is now available. Highlighted on the cover is a review of the RødeTest FuzzMeasure Audio and Acoustic Measurement Software and Ethan Winer's experiments to measure capacitor distortion. For tube enthusiasts, Bill Reeve repurposes an old Shure preamp for line-level duty, and Bruce Heran details how he built his two Mini Blocks tube amplifiers. Mike Rothacher shares an inexpensive MOSFET Follower (MoFo) Class A amplifier project, Richard Honeycutt provides valuable lessons about repairing guitar amplifiers, and there's plenty more audio electronics focused articles. Download now!

Want to know which of the topics and stories published online in 2019 were the most popular? We looked at the most-read articles of 2019 in audioXpress.com (which also includes selected articles from Voice Coil magazine), and we created this Top 10 list of news stories and online articles. Here are the results!

In this article for audioXpress, "Why Doesn’t My Stereo Sound Like a Live Concert?", Ethan Winer explains why acoustics matter and why the fidelity of your audio devices and speakers is not the reason your hi-fi doesn’t make your living room sound like you’re hearing a concert in a concert hall. This article was originally published in audioXpress, August 2019.

The August 2019 edition of audioXpress features the latest Acoustical Solutions product round-up, and several contributed articles on acoustic-related topics, including, evaluating auditorium acoustics, measuring unwanted vibrations, and frequency timing. This edition also includes Stuart Yaniger's review of the Kali Audio LP-6 Powered Studio Monitors, Ken Bird's assembly-review of the Swans Speakers DIY Kits, and Oliver A. Masciarotte's report from AXPONA 2019. Now available for download and in print!

Now, what's a Null Tester? The Null Tester sends the same audio signal through two paths, then it electronically subtracts one signal from the other to obtain the difference. For years, many audiophiles and even some audio professionals have believed that signal wires can sound different. Obsessed with settling this dilemma, Winer designed a Null Tester device that compares any two signal wires and reveals their difference to a level below -110 dB. This article was originally published in audioXpress, June 2019.