Interviews

As founder of California-based Vacuum Tube Logic of America, David Manley is at the forefront of the current renaissance in vacuum-tube audio equipment. In addition to manufacturing some highly regarded audiophile components, VTL has introduced a line of tubed professional equipment that is finding its way into recording studios. David has a lifetime of experience in tube electronics, recording studio design, disc cutting, music recording, and most recently, analog/digital and digital/analog converter design.

Richard Sequerra was born in 1929 and raised in various parts of the US by his mother, who worked for the Department of State. By the time he was 20, he had launched a freelance career that has since spanned a wide range of technologies. During a stint at Marantz in the 1960s, he worked with Sidney Smith on that firm's famed Marantz 10B tuner, which was sold from 1964 through 1970. Subsequent products have included the Sequerra 1 tuner and the Metronome 7 loudspeaker, originally produced by Sequerra's firm Pyramid and now hand-assembled by its creator, who offers the most recent version via his website, for less than half what it cost through retail channels when Sam Tellig praised it in the July 2007 Stereophile. Sequerra's newest transducers—a self-amplified nearfield speaker and matching subwoofer designed for Internet music listening—remain in prototype form; he hopes to sell or license the designs rather than manufacture and market them himself.

Alon Wolf can be mesmerizing. When the founder of Magico gets going on one of his favorite subjects, loudspeaker design, the strength of his convictions, depth of technical knowledge, and sureness of response are enough to hush many a skeptic into silence.

"You've set the audio industry back 20 years!"

When Hong Kong–based music lover and electronics-equipment distributor Klaus Heymann (footnote 1), now 70, first began organizing classical-music concerts as a way to boost sales, he had no idea he would end up founding the world's leading classical-music label. But after starting a record-label import business and meeting his future wife, leading violinist Takako Nishizaki, the German-born entrepreneur sought a way to promote her artistry. First he founded the HK label, which specialized in Chinese symphonic music (including Nishizaki's recording of Butterfly Lovers, the famous violin concerto by Chen Gang). Next he established Marco Polo, a label devoted to symphonic rarities.

It was eight years ago that I first met Aalt Jouk van den Hul. I was visiting Ortofon in Denmark, and, with a group of hi-fi journalists from all over Europe, was traveling by bus to visit the cartridge-production facility in the far south of that country. Bus journeys are not my ideal way of passing time; naturally I gravitated to the rear of the bus, where bottles of Tuborg were making their presence felt. One journalist, however—a pixieish fellow hailing from The Low Countries—resisted the blandishments of the opened bottles. Producing a sheath of black-and-white glossies from his briefcase, he announced that he had just developed the ultimate stylus profile!

Since he joined Snell Acoustics in the mid-1980s, Kevin Voecks, their chief designer (footnote 1), has been involved in the design or redesign of the entire Snell line, from the minor revision of the Type A/III (incorporation of a new tweeter), to the complete redesign of the Type C (now the CIII). Snell Acoustics is located in Massachusetts, and although Kevin spends a good deal of time there or at the measurement and analysis facilities of the Canadian National Research Council (NRC) in Ottawa, he does a great deal of his conceptual and preliminary design work, as well as his listening, in Los Angeles, where he makes his home. I visited him there last summer to gather a little insight into his background and loudspeaker design philosophy. I started by asking Kevin when had he first become interested in loudspeaker design...