Member Profile: Charlie Hughes

Location: Gastonia, NC (the Charlotte area) Education: BS, Physics, Georgia Institute of Technology Occupation: Electro-acoustical consultant/loudspeaker design engineer Member Status: Charlie said he has been reading Voice Coil since about 1988, and he is a frequent contributor to audioXpress. Affiliations: …

audioXpress is all about range—range, in the sense of content diversity. Our international team publishes insightful articles on a wide variety of topics such as speaker design, sound analysis, glass audio projects, and hi-fi product reviews. This month we deliver …

Alexander Arion’s resume lists stints as a musician, technician, service manager, and even owner of an “illegal” research company. In a recent interview he explained how the seeds for his love of music and audio technology were sown in communist …

The first issue of Circuit Cellar magazine—a sister publication of audioXpress that’s focused on embedded computer engineering—was printed in 1988 with a now-famous quote on the cover: inside the box still counts. Since then, engineers and innovators have used the …

Each year’s “speaker special” issue is a favorite among audioXpress readers. This 2012 edition features in-depth articles about speaker technologies and design projects, without completely ignoring other interesting topics such as tube amps. This year’s special speaker section features informative articles about a detailed loudspeaker design project and an intriguing electrostatic speaker experiment. We also included a third must-read speaker-related article, but it isn’t in the special section because it focuses on enclosures rather than speaker design.

The September 2012 issue of Voice Coil is now available. The topics covered include CEDIA Expo 2012, a look at Kingstate Electronics, acoustic patent information, industry updates, a test of Faital Pro’s DF371 bullet-type tweeter, and a test of a …

Ken Bird (BSEE, Washington University) is an audioXpress article contributor who has been reading the magazine since 1989. In the September 2011 issue, he presented his tower omnidirectional speaker design project (“Castle Tower Omni Speakers”). Bird’s member profile follows. Affiliations: …

Ralph Berres, a television technician in Germany, created an exemplary design space in his house for working on projects relating to his two main technical interests: amateur radio and metrology (the science of measurement). He even builds his own measurement …

When I first saw the Intel Industrial Control in Concert demonstration at Design West 2012 in San Jose, CA, I immediately thought of Kurt Vonnegut ‘s 1952 novel Player Piano. The connection, of course, is that the player piano in …

MIT graduate student David Mellis is interested in how designers are combining high-tech parts like microcontrollers with low-tech materials in clever ways. Yesterday, I pointed everyone to Mellis’s inspiring 3-D Printed Mouse project. Now let’s look at another creative design—Fab …