EWA / ELSDON WONFOR AUDIO: Their M50 – 50W stereo power amp

They tell us ….. Bandwidth 5Hz – 40KHz ±0dB Bandwidth 2Hz – 100KHz -3dB Output Power 50W/ch @ 8Ω Output Power 98W/ch @ 4Ω DC offset ≤ 10mV typically 2mV Damping Factor ≥ 100 typically + 100 This power amplifier has been designed to produce the superb acoustics of a SECA (Single Ended Class A) […]

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EWA / Elsdon Wonfor Audio: Q&A regarding their new HB100 mono power amps

HP: Gentlemen, you’ve been designing amps and preamps for over 30 years. Is it still a challenge and ….. are you having fun? A: Colin has been designing electronic professionally for over 40yrs. He has done this for a living. His many designs include power control and power supplies Linear, Resonate, Switch Mode and even […]

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TIM de PARAVICINI: King of Tubes is interviewed!

                    Stereophile write …… “How many hi-fi professionals can say that they’ve designed at least one of every part of a complete recording system, from microphones to tape recorders to vinyl-disc-cutting electronics? Probably only Tim de Paravicini (footnote 1). Best known to audiophiles for his extraordinarily […]

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BILL DYER: The interview

Howard Popeck: Hmm. Oh dear – and oh well! This interview shown below this introduction was rejected for publication by a UK Audio magazine. This is pity, but that’s life. The reasons are far from clear but somehow I guess that there was a historic clash of personalities between the interviewee and some anonymous ‘suit’ […]

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A POINT OF VIEW: The Unique Evils of Digital Audio and How to Defeat Them

John Siau writes as follows: We are all too familiar with the criticisms of digital audio. We have heard digital audio described as harsh, brittle, lifeless, tense, cold, and non-musical. Perhaps each of us can add our own adjectives to this list. We are surrounded by poor-quality digital systems. Our consumer-grade CD players, DVD players, […]

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HELIUS DESIGNS: In conversation with Howard Popeck – part three

Geoffrey – what is your response to the statement ‘How many channels do you think it takes to make a music listener happy; One. Mono’s fine. I’ve never heard anybody bitch about Louis Armstrong, saying, “I would enjoy it if it were only stereo” Now this question is interesting from several perspectives and I’m going […]

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PIERRE LURNE: Design Philosophy For Turntables – a paper from Pierre Lurne Of Audiomeca

Enjoy The Music write ….. For those who are unfamiliar with his name, Pierre Lurne has been an integral part of cutting edge turntable design since the late 1960’s. Pierre designed his first arm design in 1968. He later was commissioned to do design work for a then major player in the audiophile turntable market. […]

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HELIUS DESIGNS: in conversation with Howard Popeck – part two

Geoffrey ….. When it comes to listening to what you’ve designed, do you worry that you can find yourself liking something which is actually wrong? How do you keep yourself on track? In the context of tonearms it’s difficult to imagine what I could do to make it sound ‘wrong’. This part of the system […]

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AUDIO RESEARCH: Meet Your Maker: Hi-Fi+ Visits Audio Research Corporation

Chris Martens: Reviews of products from the US-based firm Audio Research Corporation have frequently graced the pages of Hi-Fi+, so that I was pleased to have the opportunity to visit the ARC factory in Plymouth, Minnesota (a suburb of the greater Minneapolis metropolitan area) to see how the firm’s components are made. What follows is […]

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HELIUS DESIGNS: in conversation with Howard Popeck – part one

Geoffrey ….. why is there such diversity between audiophile values and the audio engineering establishment’s values? I’m not sure there is – indeed, I would argue that, more often than not, audio engineers are just audiophiles who have taken their interest to the next level and gone pro. Perhaps I should start by suggesting that […]

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HELIUS DESIGNS: If music be the food of love, play on; Give me excess of it…

Geoffrey Owen: Thus wrote Shakespeare as his opening line of Twelfth Night… More than simply a line from a play, it’s a reflection of my life. I come from a musical family – my Grandfather sang opera and operetta in the 1930’s and my second son is a blindingly good guitarist. As for me, I’m […]

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HARBETH: Alan Shaw in conversation with Howard Popeck

Hello Alan and thank you for finding the time to respond to the following question: Why is there such diversity between audiophile values and the audio engineering establishment’s values? “This can be explained by an almost total lack of appreciation that physics – basic high school physics – governs every single aspect of audio bar […]

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Audiophile interview: Nelson Pass – The Patents Of Pass

Brian Damkoroger writes as follows: If high-end audio were to carve its own Mt. Rushmore, whose faces would appear there—besides that of Stereophile founder J. Gordon Holt, of course? It’s likely that no two audiophiles would ever come up with identical lists of subjects, but I wouldn’t be surprised if they could agree on at […]

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HELIUS DESIGNS: VTA – “As a starting point, when people refer to Vertical Tracking Angle, VTA -they usually mean Stylus Rake Angle, SRA – in other words, the perpendicularity of the stylus with respect to the groove”

Geoffrey Owen: Somewhat like Terry Wogan and his listener, I feel my first article secured one noble reader. My hope now is to double that number in this follow-up. In my last piece, I suggested the audio industry was populated by three distinct stereotypes, these being gods, gurus and mystics; the first two I’ve covered […]

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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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AUDIOPHILE INTERVIEW: Arnie Nudell – From Here to Infinity

Imagine a speaker firm with an introductory product that pushes the outside of the performance envelope while tearing the pricing envelope to shreds. A reviewer in an audio journal that tilts toward the high end deems this speaker “appallingly expensive,” notes he would have bought the test sample if he’d had the money, and confesses […]

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AUDIOPHILE INTERVIEW: Speaker Design Guru David Smith

Rahul Athalye (TNT-Audio ezine) writes as follows: TNT-Audio caught up with noted speaker designer David Smith, ex-JBL, McIntosh, KEF, Snell, and PSB. Join TNT and Speaker Dave on a journey into the heart of speaker design, its history and current trends. Rahul Athalye (RA):Tell us about how you got started in the audio business. David […]

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Audiophile interview: Norbert Lehmann, Owner and designer of Lehmann Audio (Entec) HiFi products

Lucio Cadeddu (TNT-Audio): LC > May you tell our readers how did you get involved in HiFi (first) and in equipment design (later)? NL > When I grew up there was no question that anyone had to own a stereo setup. I bought my first stereo setup when I was fourteen years old. It was […]

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