John Atkinson

John Atkinson  |  Mar 19, 2019  |  9 comments
High Performance Loudspeakers: Optimising High Fidelity Loudspeaker Systems, Seventh Edition, by Martin Colloms. John Wiley & Sons, Inc., 2018. Paperback, 696 pp., $95. Available as an eBook, $79.99.

"Listen to that—that's what I mean by 'cone cry!'"

It was 1979. I'd been taking part in a blind listening test of loudspeakers organized by Martin Colloms (footnote 1) for the British magazine Hi-Fi Choice and, after the formal sessions had ended, had asked Martin to explain something I'd heard. A drive-unit's diaphragm produces cone cry when it resonates at a frequency unconnected with the musical signal it is being asked to produce; we had been using an anechoic recording of a xylophone, and one of the loudspeakers we'd been listening to was blurring the pitches of some of the instrument's notes.

John Atkinson  |  Mar 12, 2019  |  51 comments
The dichotomy between what is measured and what is heard has resurfaced in recent months. Jon Iverson discussed it in his "As We See It" in our December 2018 issue, and I followed up on the subject in my January 2019 "As We See It." These further thoughts were triggered by an e-mail exchange I had last December with Stereophile's longtime copyeditor, Richard Lehnert.
John Atkinson  |  Mar 07, 2019  |  First Published: Nov 01, 1991  |  3 comments
91maggie26rAsk anyone in the street what they think of when they hear the word "loudspeaker" and odds are they'll describe a wooden box with moving-coil drivers sitting in its front. But ask a Stereophile reader and it's quite possible that he or she'll describe a large, flat panel reminiscent of a room divider: in our 1989 reader survey, the most widely represented brand of loudspeaker was Magnepan, with a significant lead over Infinity and Vandersteen, the second and third most common speaker brands. This represents considerable commercial success in a generally conservative marketplace for a company whose products are so different from the norm.
John Atkinson  |  Mar 05, 2019  |  2 comments
It used to be on my commute that I'd see my fellow subway riders listening to music on their iPods with headphones from Beats, Bose, Sennheiser, Sony—and even, occasionally, from Grado. These days, however, iPhones and Android smartphones are ubiquitous, and while I still sometimes see a pair of Beats, many travelers now wear Bluetooth-connected Apple AirPods. I haven't bought a pair of AirPods, so I don't know how they sound, but at $159, I suspect they don't compete with "legitimate" headphones. Even so, I wondered if convenience trumps sound quality when it comes to listening on the move.
John Atkinson  |  Feb 26, 2019  |  4 comments
In November 2016, I reviewed Shure's KSE1500 electrostatic in-ear headphone system, which featured a D/A amplifier with both analog and USB inputs that drove in-ear headphones with unique electrostatic diaphragms. At $2999, the KSE1500 was and is pricey, and recently Shure introduced a less-expensive electrostatic headphone system, the KSE1200SYS ($1999), with the same amplifier and earpieces but just an analog input.
John Atkinson  |  Feb 26, 2019  |  3 comments
The news broke on Facebook yesterday that Mark Hollis had died, aged just 64. I was late to appreciate Hollis's work, including his extraordinary solo album from 1998 (above). But since Stephen Mejias turned me on to him, Mark Hollis's music, both solo and with the band Talk Talk, has been in heavy rotation. (You can find my review of Talk Talk's final album, Laughing Stock, here—scroll down the page.) Fellow fan, Michael Vamos of distributor Audio Skies, asked if he could share some thoughts.
John Atkinson  |  Feb 05, 2019  |  First Published: Jan 01, 1995  |  0 comments
Editor's Note: 24 years ago, in January 1995, we published the first issue of Stereophile Guide to Home Theater, a sister publication intended to appeal to the the growing number of home-theater enthusiasts. Stereophile's founder, the late J. Gordon Holt, had gotten early into the idea of accompanying movies with high-quality sound, and when I first visited his New Mexico home in January 1986, his system included an Advent NTSC-format video projector.
John Atkinson  |  Jan 17, 2019  |  49 comments
It's a high-end audio truism: Successful companies are founded by a creative engineer or entrepreneur with a vision. So what happens when the founder is no longer around? While Mark Levinson is an example of a brand that not only survived the exit of its leader but thrived, speaker manufacturer Thiel dwindled after co-founder Jim Thiel died in 2009, and eventually closed up shop. Colorado company Ayre Acoustics was faced with this problem when founder Charley Hansen passed away in November 2017.
John Atkinson  |  Dec 29, 2018  |  4 comments
It's been reported on the Strata-gee consumer electronics news website that Björn Erik Edvardsen (known as BEE), who was the creator of the historic NAD 3020 integrated amplifier, passed away on December 16 from Myeloma/bone cancer. BEE had worked continuously with the company from 1976 until just a few months ago, when he left his position as NAD's Director of Advanced Research to focus on his battle with cancer.
John Atkinson  |  Dec 27, 2018  |  57 comments
Back in the mid-1990s, I believed that the design of D/A processors was fundamentally a solved problem. The resistor-ladder, multi-bit DAC chips of the 1980s, with their linearity errors, had been replaced by sigma-delta types that had minimal linearity error down to the lowest signal levels. All that remained for the designers of PCM D/A chips was to increase resolution and dynamic range to the theoretical limits, and to improve the mathematical precision of oversampling digital filters to match the performance of the 20- and 24-bit recordings that had just begun to be released.

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