Linear Audio Bookzine | My interviews | My designs | Classic papers
Another Linear Audio issue has seen the light: Volume 3!
Again, a team of awesome authors has given you interesting, entertaining and and project-ready articles.
A short rundown: Richard Burwen explains how tweaks that 'cannot work' may nevertheless cause audible differences.
A couple of tutorials: How signal interpolation can improve DAC performance, and how to design that great class-A enclosure from a thermal and dissipation point of view.
Several circuit designs: a headphone buffer/amp with in-ear equalization; the long-awaited Part II of Scott Wurcer's mic preamp article; how to correct for cartridge resonance; and a pair of passive. discrete I/V converters.
On the speaker front we have an article on how to design a subwoofer for THX(c) performance.
For your lab: a floating simulated inductor from 10mH to 10H for your filter and xover experiments, and a low noise, lab-grade measurement preamp.
Then Stan Curtis reviews the state of audio and concludes that lots of work still has to be done, especially in digital.
We end with a pair of book reviews: Morgan Jones' 4th ed. of Valve Amplifiers and Burkhard Vogel's 2nd ed. of The Sound of Silence.
So, lots of material to digest. And I am proud that again I made my self-imposed deadline to the day ;-) .
Happy reading, happy building, but above all Happy Listening!
Jan
Be sure to come back to my library once in a while because I keep on adding interesting audio tech articles and links!
Two new books on my reading table:
The Electric Life of Michael Faraday by Alan Hirshfeld is a great and engaging biography of, you guessed it, Michael Faraday. The man who worked himself up, against all odds, from a poor and underprivileged young man to one of our greatest scientists. It's hard to overestimate his impact on modern technological developments.
The other book I'm reading is quite different. The 9th work by Dutch-born Frans de Waal, now Professor (and a few other titles) at Yerkes National Primates Research Center in Atlanta: The Age of Empathy - Nature's Lessons for a Kinder Society. Selected as one of the 100 most influential people by Time in 2007, Frans' work can be characterized as explaining altruism and empathy from a Darwinian perspective. Fascinating, to say the least, and very encouraging for our species' future. Recommended!
Enjoy!
Jan Didden
Welcome to my place!
T-reg update - important
One builder of the DN2540 version of T-reg had some problems with it and I discovered that it probably is related to (re)connecting a capacitive load with the regulator live. The pass device DN2540 has a max Id of only 500mA, which is suffucient for normal use but may be exceeded in some cases when (re)connecting a cap load. I will design-in a current limiter and update the relevant pages here.
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Talk to me!
My interviews. I've done several interviews with audio personalities over the years, mostly for AudioXpress. In case you missed any, you can (re)read them here.
Reading
Table
what am I reading?
Books or articles that I find
interesting but have no bearing on audio (at least not
directly...)
What’s in a name is where I tell you who am I and what’s my drive when I design audio.
Been there, done that - I’ve done some designs and wrote some articles in the past which have been published.
Musings is a page where I muse about things that
strike me and may or may not be relevant to audio.
My Library will lead to a list of articles that are classics and, in my opinion at least, significant to further our understanding of audio technology. They are meant for personal study only.
Good Stuff are links, documents and places of audio interest. It will change over time so come back once in a while.
I'm also reading "The crucible of consciousness - an integrated theory of mind and brain" by Zoltan Torey. Just after the first few pages something clicked in my brain...
Jean Hiraga's minimal amplifier: just one (1!) MOSFET: the Nemesis. I finished rebuilding this classic, BUT I still am not happy with the power supply. Am now putting togeether a VICOR smps with RAM (Ripple Attenuator Module). Stay tuned!
I started a page of favorite quotes and other useless facts. If you want to contribute, mail me!
All other T-reg stuff moved here.
Stop press! There is an error on the DN2540 plug-in board available through Elektor. One end of R3 is going nowhere - this should be connected to K2. My apologies, it is entirely my fault. Thanks John Lopez!
As noted, the T-reg is based on the MC1466L floating voltage/current reg chip, now obsolete. Interestingly, Gary Lecomte has developed a discrete version (pcb actually) of that MC1466L! (Thanks John O'Neill).
