Welcome to my place!

Audio Resource Jan Didden

It's great to have you here!

This place is where I talk about my personal projects, interests and whatnot. Not necessarily related to audio, although it often is. Under the Musings button you'll find things related to perception and conciousness which of course are very much applicable to audio!

My library lists lots of (historic) audio papers and studies that I personally find important to understand many different issues in audio.

I also have collected the interviews I've done with audio luminaries. Take some time to read and digest them - there are very interesting and worthwhile gems in each of them! My projects however is audio stuff - things I designed, wrote articles about, and my personal system. Comments and remarks are always welcome!

Last but surely not least, let me mention my publication Linear Audio. Published twice per year, over 200 pages of technical audio related articles from international authors. Article abstracts and author bio's can be read at the website, and some articles are available for free online.

So, take a look around, explore the various areas and let me know what you think!

Winfield Hill's 100W, 10MHz, 1000V/uS AMP-70

Update June 1, 2019 - I have available now sets of a PCB, a mounting plate and the three DC-DC converters. Yours for € 25 or € 45 for a pair. Shipping at cost. Let me know if you are interested, there are a  few sets left.

This section is about the building of Winfield Hill's AMP-70 project. AMP-70 is a test and measurement amp, that looks innocent enough as a 100W audio power amp, but with a large signal bandwidth of minimum 5MHz! This amplifier has been designed by Winfield Hill (of Art of Electronics fame) for electromagnetic field experiments, but is also a great audio power amp. Some of us have also use for it driving power supply regulators with a combination of DC and AC to measure things like PSRR and Zout as a function of frequency. AMP-70's 5A, 50V ouput capability will cover pretty much all audio power supply regulators out there. Consider this as a build thread - I will expand and amplify the page as I and others progress in completing, testing and using this amplifier.



AMP-70 BOM - in progress -       AMP-70 - Circuit diagram       List of known issues

Progress Report.

5Jun19 - Starting with the power supply subsystem. Mounted all supply caps, did the mod for the bipolar DC-DC converter (see List of known issues). Mounted all DC-DC converters. Tested all OK.


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