All items tagged with audioXpress archive (47)

Sources 101: Audio Current Regulator Tests for High Performance - Full Article

December 15, 2015 by Walt Jung

Sources 101: Audio Current Regulator Tests for High Performance - Full Article

In April and May 2007, audioXpress published a two-part article by Walter G. (Walt) Jung, noted designer and author of the IC Op Amp Cookbook and IC Op Amp Applications book series. In this article - still being referenced to date - the author discusses audio current regulator circuits and their performance with regard to power-supply-related noise. Read the two-parts plus addendum letters.

Fresh from the Bench: Benchmark DAC2 DX Stereo D/A Converter

July 22, 2015 by Gary Galo

Fresh from the Bench: Benchmark DAC2 DX Stereo D/A Converter

The DAC2 series are the latest digital-to-analog converters from Benchmark Media Systems, the American audio manufacturer based in Syracuse, NY. The model reviewed here is the DAC2 DX, which has been tailored for users who don’t have analog sources or who use a separate analog preamp. Read the full review.

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.

TABAQ Tang Band Quarter Wave

June 24, 2015 by Bjorn Johannesen

TABAQ Tang Band Quarter Wave

Inspired by debates on the Internet about quarter wave designs with Tang Band 3˝ full-range drivers, the author decided to design its own quarter wave loudspeakers. This article was published in audioXpress, March 2007 and the results were simply spectacular, generating worldwide interest. Recently, Bjorn Johannesen created a successful business with his own speaker company, called KVART & BØLGE, which means Quarter & Wave in Norwegian and Danish.

AES67-2013: The New Networked Audio-Over-IP (AoIP) Interoperability Standard

June 12, 2015 by Joao Martins

AES67-2013: The New Networked Audio-Over-IP (AoIP) Interoperability Standard

The AES X192 initiative - driven by the Audio Engineering Society (AES) task group SC-02-12-H - resulted in the new AES67-2013 standard, published on 11 September 2013, which defines key parameters for networked AoIP interoperability. This article from audioXpress' Standards Review column was published short after, in January 2014.

Fresh From the Bench: Focal’s Spirit Professional

June 9, 2015 by Miguel Marques

Fresh From the Bench: Focal’s Spirit Professional

In 2013, French speaker manufacturer Focal released its first headphones. Among the models intended for the hi-fi and consumer markets, Focal also introduced the Focal Spirit Professional, a closed-back headphone design built for the professional musician or recording studio engineer. This is the review.

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.

Power Transformers for Audio Equipment

May 5, 2015 by Pete Millett

Power Transformers for Audio Equipment

In this article, author Pete Millett explores the different types of power transformers, and why you might choose to use each type in audio equipment. The article addresses issues with low-frequency (50–60Hz) line transformers, but many of the same issues apply to audio-frequency transformers as well.

Interview with Nelson Pass

March 31, 2015 by Jan Didden

Interview with Nelson Pass

Over the years, some of the best Nelson Pass projects have been featured by Audio Amateur and audioXpress magazines. The A40 power amp article was published in The Audio Amateur, 4/78, and the A75 power amplifier appears in The Audio Amateur 4/92 and 1/93. His other works are posted at passdiy.com. Originally published by audioXpress on May 2010.

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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