All items tagged with DIY project (52)

Fully Self-Contained Raspberry Pi Audio HAT Board with MERUS Class D Multilevel Amplifier Now Available

May 21, 2020 by audioXpress Staff

Fully Self-Contained Raspberry Pi Audio HAT Board with MERUS Class D Multilevel Amplifier Now Available

Infineon Technologies developed the world’s first fully self-contained Raspberry Pi audio amplifier HAT (Hardware Attached on Top) board. It offers high definition audio at boombox power levels in a small form factor. The Infineon proprietary multilevel technology ensures minimum size and consumption, state of the art power efficiency, and high resolution audio quality for Raspberry Pi users and makers. Target applications include active speakers with wireless music streaming.

You Can DIY!: A Class D HAT for Raspberry Pi

April 1, 2020 by Jens Tybo Jensen

You Can DIY!: A Class D HAT for Raspberry Pi

This project is a great suggestion for a new affordable high-end 2 x 40 W Class D audio amplifier implemented with a Hardware Attached on Top (HAT) board to connect onto a Raspberry Pi Zero platform, creating a solution ideally suited for DIY audio projects. On the other hand, this is a very clever way to promote the Merus amplifiers from Infineon and get a great number of developers and enthusiasts to actual use it, get to know it, and understand its advantages in a real audio project. This article was originally published in audioXpress, January 2020.

Are You Serious About Audio Electronics? audioXpress November 2019 Is Now Available!

October 9, 2019 by audioXpress Staff

Are You Serious About Audio Electronics? audioXpress November 2019 Is Now Available!

The November 2019 edition of audioXpress is now available with a wide range of technical topics in audio electronics and design. We review the Benchmark LA4 Line Amplifier and the new Hooke Verse Bluetooth Binaural Recording Headphones. Jan Didden proposes an updated version of his High-Voltage Delay for Tube Amplifiers, and Thomas Zarbo, Jr. explains how to build his Tenacious Bass-8 Powered Subwoofer. And, learn more about Data-Over-Sound, MU amplification topologies, and Auverdion’s Aurora open-source DSP platform. Now available!

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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You Can DIY! Swans Speakers DIY Kits. Everything You Need Is Inside the Box!

September 25, 2019 by Ken Bird

You Can DIY! Swans Speakers DIY Kits. Everything You Need Is Inside the Box!

For this review, Ken Bird details his experience in building a set of speakers from Swans Speakers Kits, part of a new catalog created by HiVi Acoustics and Swan Speakers (HiVi's consumer brand), and that so far includes two kits: a two-way bookshelf design, the DIY 2.2A, and the slightly larger three-way design, the DIY 3.1A, the model sent to audioXpress. Both models incorporate HiVi drivers. This article was originally published in audioXpress, August 2019.

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The Audio Builders Workshop Returns to AES New York Offering Hands-On DIY Product Design and Production

September 16, 2019 by Audio Engineering_Society

The Audio Builders Workshop Returns to AES New York Offering Hands-On DIY Product Design and Production

The Audio Builders Workshop Track at the 147th AES International Professional Audio Convention, October 16 – 19 at New York City’s Javits Center, is set to offer attendees an expanded array of opportunities to learn about hardware construction and modification, and even to try their hand at DIY projects sure to inspire and lead them to their next build.

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.

audioXpress May 2019 Glass Audio Special is Now Available!

April 9, 2019 by audioXpress Staff

audioXpress May 2019 Glass Audio Special is Now Available!

For audioXpress May 2019 -Glass Audio Special - we’ve put together a very strong edition, with some of best tube experts sharing a series of DIY projects for all skill levels, from restoration projects to new amplifiers, preamps, and headphone amps. We review the Nu:Tekt HA-K1 headphone amplifier using the novel Korg Nutube 6P1 device, and interview the founder of Parks Audio. We go deep on measuring voltage regulator ripple rejection and we even look at square-wave testing. All inside audioXpress May 2019!

A High Performance Microphone Preamp

October 17, 2018 by Ron Tipton

A High Performance Microphone Preamp

This article by Ron Tipton details the design and construction of the TDL Model 401 high-performance microphone preamp, using a differential input stage that used compound transistor pairs with circuit resistance values, computer optimized for very low output noise. This is a great example of Ron Tipton's TDL Technology projects, which he managed from his home base in Las Cruces, New Mexico. Sadly, the audioXpress community lost one of its most esteemed and prolific writers. There's no better way to pay tribute to Ron than revisit some of these projects. This article was originally published in audioXpress, October 2002.

You Can DIY! Turntable Speed Control

March 27, 2018 by Joel Hatch

You Can DIY! Turntable Speed Control

In this article, Joel Hatch explains how to build a variable frequency synchronous motor controller to control turntable speed. Now that turntables are back in force, this excellent project not only allows some knowledge about a vital part of the motor's rotational speed adjustment, but it also dives into one of the most crucial aspects of a record player for anyone interested in a little DIY or restoration projects. This article was originally published in audioXpress, December 2010.

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