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Vol 6
Marcel van de Gevel commented on Daniel Joffe's article in Vol 6 "Practical Electronic Control of Class AB Output Stage Quiescent Current". Here are his comments and Daniel's reply.
BoM for Putzeys demo preamp Linear Audio Vol 5
Our friend Paul Hendriks from The Netherlands build Bruno Putzeys' demo preamp project from Linear Audio Vol 5. He produced a complete BoM which can be sourced one-stop from distributor Farnell.…
Vol 5
Linear Audio author Ovidiu Popa wrote an extensive letter, commenting on Hans van Maanen's article On the audibily of "high resolution" digital audio formats and how to test this. Dr. van Maanen replies to each section…
Power Supply for Gary Galo's Archival Phono Preamp
Gary Galo's article in Vol 5, "An Archival Phono Preamp" mentioned that a suitable power supply would be posted online - here it is.
It is based on the…
Gerbers and PCB layout for Bruno Putzeys' article in Vol 5
The article from Bruno Putzeys in Vol 5 'The G-word, or, how to get your audio off the ground' is accompanied by a complimentary PCB for the demo project (courtesy…
Several typos crept into Ian Hegglun's Vol 4 article "Towards a reconciliation of measurements with listening tests".
Some of these, notably fig 6 and fig 10, have been addressed in Ian's reply to Burkhard Vogel…
Marcel van de Gevel's article in Vol 4 'A tube-based phono preamplifier' was concluded with a sidebar, starting on page 128, under the heading 'Phono amplifier with a +1 term'. Some of the time constant notations…
Patrick K. (aka EUVL) wrote an interesting article for Vol 3, "Design Considerations for a Class A Amplifier Enclosure". This is an subject that is very rarely treated at all.…
Vol 4-1
Both Ian Hegglun's article (Towards Reconciliation of Measurements and Listening Tests) and Hans van Maanen's Guest Editorial (The Case for Subjective Listening Tests) in Vol 4 drew comments and some interesting additional…
Vol 4-0
Brian Lenharth commented on Les Bordelon's article in Vol 4 on DAC design. His comment was specifically aimed at Les' classification of DACs as R-2R or Sigma-Delta. Between them, Brian and Les eventually agreed and added some…
Vol 4-2
Marcel van de Gevel and Bob Cordell had a lengthy exchange regarding some noise issues in Bob's VinylTrak article in Vol 4. Bob placed a large section of additional material on his website covering the exchanges as well as other areas…
Vol 4-3
Letter from Walt Jung to Jack Walton on V4 article on power supply measurement and listening tests
Jack's article drew comments from the man who started much of the interest in power supply impact on audio circuits in the 80-ies,…
Color graphs for Jack Walton's regulator article in Vol 4
Linear Audio Volume 4 has a long-awaited article by Jack Walton, comparing a large number of low power supply regulators. Comparison includes measurements and controlled listening…
Vol 3-1
Letter from Burkhard Vogel to the review of his book by Ovidiu Popa
Burkhard Vogel, the author of The Sound of Silence, commented on the review of his book by Ovidiu Popa in Vol 3. Mr. Vogel offers some additional information about applying…
Vol 3-2
I received several letters commenting on articles in Volume 3, notably to the articles by Samuel Groner (low noise lab-grade measurement amp), Steven van Raalte (correcting transducer response with inverse filter) and Robert Munnig…
MathCad resources for the audio enthousiast Update 5 July 2012: Mason Green send me some info on an alternative to MathCad/MatLab: 'Scientific Python' ;He included a link to an excellent tutorial on Scientific Python. For an example of a…
Audio files for Wurcer mic preamp article V1, V3. The mic preamp Scott Wurcer developed in his articles in Vol 1 (Part I) and Vol 3 (Part II) were used to record a live concert at Stuart Yaniger's residence in Austin, TX in Nov 2011. I have…
Zen > Cen > Sen - Evolution of a Minimalistic IV Conversion Circuit This is the online version of Patrick K (alias EUVL) article in Linear Audio Vol 2. This article has generated considerable interest at diyaudio and with the publication…
Vol 0-2 The never-ending saga on the cathodyne output impedances: Chris Paul wrote me a letter, commenting on both Burkhard Vogel's LTE and Stuart Yaniger's article in Volume 0. Here is Chris' latest letter.
Vol 0-3 Another reaction to Stuart Yaniger's article in Vol 0 about the Cathodyne (aka Concertina) phase splitter, this time by frequent contributor Burkhard Vogel from Stuttgart, Germany. Burkhard has analysed this circuit in a more formal…
Everything about record replay characteristics, recording speeds and such. This is not an article that has been published in Linear Audio, but I believe the data in the linked table is of importance to anyone seriously involved with record replay and…
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