My Music CD/MP3 Album Collection

The very first 12″ LP record album that I've bought was “Oxygène” by Jean-Michel Jarre. That probably must have been around 1977 (the album is from 1976). Although I still have a few vinyl LPs available, I don't have my record player anymore (my sister still has it). Meanwhile I …

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My Old Sony TA-4650 VFet Amplifier

With replacement Elektuur/Elektor “Mini-Crescendo” power amplifier

I got this 1970's amplifier sometime in the 1980's from my late uncle. The power amplifier was broken and he had bought something new at that time. Only these days I read that this probably was a known problem, caused by some wrong …

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TTSH - Case

After a longer break, summer and autumn have passed, I picked up the work on my TTSH again. The TTSH is working, but not ready yet. Of course I still need to build a case for it. I never got to that last year. My idea was to have some space for additional modules below to the TTSH. I came up with following design:

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TTSH - First Test of Finished TTSH Board

Now that the complete board is done, I could perform a first test. This covers VCO 1, 2 and 3, VCF, ADSR, AR, VCA, noise and sample&hold. At first all seemed to be working, but then I noticed two defects:

  • One of the VCOs generated a way too high …

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