TREVOR COX: Professor of Acoustic Engineering

“Trevor Cox carries out research, teaching and commercial activities in acoustic engineering. He is an EPSRC Senior Media Fellow and President of the Institute of Acoustics (Presidential Twitter Account) Prof Cox carries out research in performance room acoustics, investigating how room conditions can be improved for good speech communication, and quality music production and reproduction. […]

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CAD: Scott Berry of CAD / Computer Audio Design interviewed by Howard Popeck

Good afternoon readers – and welcome to the next in my ongoing series of interviews with designers of audiophile equipment. Today I welcome Mr. Scott Berry of CAD. Before we get to the first part of the series you’ll perhaps find the following background information to be useful. Thanks Howard Popeck ::::::::::: “The engineer responsible […]

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Nelson Pass: Circuit Topology and the End of Science

Jim Austin / Stereophile Magazine write …. Nelson Pass is a consummate engineer, but he got his start in physics, earning a bachelor’s degree from UC Davis. As he worked on his degree, he was already an audio designer, focusing on loudspeakers—great training for a designer of audio amplifiers. Soon, in 1974, he cofounded Threshold […]

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COLIN WONFOR: Howard Popeck speaks at length to people with interesting things to say: Colin Wonfor (Inca Tech, Magnum, Proac-Magnum, T.O.C.A, Naim and Tellurium Q) sets the record straight (Part #1)

The image above is one of just six gold plated issues. Note: This was originally published here in April 2015 Neil McCauley (HFA editor in chief) writes an introduction: Colin was and remains one of the UK audio industry’s gentlemen. No one in our office has heard a negative comment about him nor a negative […]

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TecSArt: Amando Fontana of TecSArt; an audiophile company of some repute in mainland Europe and probably unknown in the UK

Editor’s note: Howard discovered http://tecsart.com/en/ and we thought that instead of our usual approach of sending a set of questions and then printing those with the answers, we’d do it a bit differently this time. I asked Howard to write to them with an invitation to write up to 1,000 words on the French audiophile […]

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EJ JORDAN DESIGNS: Ted Jordan interview

TNT-Audio: Could you briefly summarise your amazing career of brilliant audio, off-the-schemes designer? The earliest photograph of Edward James Jordan, (Ted, to everybody) was taken Circa 1933 and shows him sitting on his Father’s knee wearing headphones and adjusting a “crystal set”, (one of the earliest types of receiver). With his mother coming from a […]

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DSD: Jared Sacks interview

Jason Victor Serinus writes: Some months back, SACD and DSD champion Jared Sacks, founder of Channel Classics, stopped by Casa Bellecci-Serinus in Oakland for an extended chat about the history of his label, recording in DSD, and his new NativeDSD.com download site. I started our conversation by asking Jared to share his history with music […]

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ROBIN MARSHALL: A Modicum of Genius

John Atkinson ….. One of the things that fascinates me about the field of box loudspeaker design is how few original talents there are capable of designing a model from first principles. Yes, armed with the Thiele-Small papers on bass alignment, an understanding of filter theory, and a working knowledge of the OEM drive-unit field, […]

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Audiophile interview: Ms. Nathalie Fougues, senior designer at newly emergent French audio maker Why Not

Hello Nathalie. How did your interest in music reproduction start? My interest in music is natural; I am as thrilled by the music of nature as I am the sounds of people and their music. From birdsong and wind to industrial rhythms; all sounds interesting me. For a few years I studied music theory and […]

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HELIUS DESIGNS: Geoffrey Owen, founder, owner and senior design engineer writes about the 1983 Orion tone arm

The trouble with being an engineer is that one is born with a natural tendency to look at the world through critical eyes and consider how differently you might have designed the things around you had been have been given the job. But then, if ever you feel inclined to prompt such a discussion, most […]

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Howard Popeck speaks at length to people with interesting things to say: Geoffrey Owen, main-man at Helius Designs

Hello Geoff, and thank you agreeing to be interviewed about social media in our shrinking audiophile world. So …. my first question; what’s your perception of the importance or irrelevance of Facebook in reaching out to potential audiophile buyers? Ah. Hmm. Howard, I suspect that you’re interviewing the wrong person. When I started writing novels […]

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REL: Audiophile interview with John Hunter

STEREOLIFE: Among the speakers we can distinguish some types made for specific applications, such as center channels, wireless active speakers or subwoofers. Each has its place in a stereo or home theater, but their makers rarely focus on a particular type of speaker. Manufacturers try to satisfy every customer and offer everything, including these very […]

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DESIGNe: Digging below the superficial with Ian Webster

Design e The first time I came across Design e loudspeakers was at hi-fi dealership, Phonography, in Ringwood, Hampshire (see www.phonography.co.uk). Phonography has integrity, as in the recent past, formerly very lucrative manufacturers have been taken off their roster when their latest products failed the musicality test. So it was with shock as I gazed […]

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PIONEER: Andrew Jones interview

Stephen Mejias writes: In our September issue, I wrote about Pioneer’s excellent SP-BS22-LR loudspeaker. At just $129.99/pair (and often discounted), the SP-BS22-LR represents extraordinary value and may very well attract a wider and younger audience to true high-fidelity sound. The only thing I don’t really like about the speaker is its tongue-twister of a name. […]

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Professor M.J Hawksford (joint founder of LFD): Low-frequency sound source localization as a function of closed acoustic spaces

Further development of an emerging generalized theory of low-frequency sound localization in closed listening spaces is presented that aims to resolve the ambiguities inherent in previous research. The approach takes a robust set of equations based on source/listener location, reverberation time and room dimensions and tests them against a set of evaluation procedures to explore […]

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Professor M. J Hawksford (joint founder of LFD): Audio Amplifier Systems, A Compilation

This document is a compilation of technical papers relevant to both analogue and digital audio amplifiers and related systems. Topics include error correction, voltage-controlled amplifiers, current drive, current-to-voltage conversion and PWM. Emphasis is given to circuit techniques that include novel forms of distortion reduction. Audio Amplifier Systems, A Compilation (PDF Download Available). Available from: https://www.researchgate.net/publication/312557447_Audio_Amplifier_Systems_A_Compilation […]

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