Nice hole burned in the circuit board material there 🙂
Maybe put some of that stuff in a tank of Diala AX?
Maybe put some of that stuff in a tank of Diala AX?
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wow! so whats that second drawing? An ESL in a box?
Yes, it is an ESL in a box...
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off topic sorry
... me too likes big Scottish island Tubes... uh the Brimar 🙂 . Wow Beveridge speakers...very serious and a collection vintage loudspeaker nowadays... hard to find in CE.

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I will see what i can do. I will need 2 identical cd players, one with filter and one without. My dac has 2 SPDIF inputs and can only be used mono (dual mono) so it can not be used for this experiment. As all is balanced i will need a transformer (that is actually a good thing here).
Frank, that must of been a serious component failure and overload, to burn such a large diameter hole in the PCB!

Yes, that board has been replaced BTW as it became unreliable (was not my own amp).
Nice thing about a balanced system it is easy just to drop in a cap between the 2 signals (at my volume pot as there i have 2 resistors already). I just need to do some calculations... But to find 2 identical players is more of a challange here. I think i have 2 CD100 players, one of them is NOS and the other still original.
Must check some boxes as it is stored for future generations haha..
Nice thing about a balanced system it is easy just to drop in a cap between the 2 signals (at my volume pot as there i have 2 resistors already). I just need to do some calculations... But to find 2 identical players is more of a challange here. I think i have 2 CD100 players, one of them is NOS and the other still original.
Must check some boxes as it is stored for future generations haha..
Yes, that board has been replaced BTW as it became unreliable (was not my own amp).
Nice thing about a balanced system it is easy just to drop in a cap between the 2 signals (at my volume pot as there i have 2 resistors already). I just need to do some calculations... But to find 2 identical players is more of a challange here. I think i have 2 CD100 players, one of them is NOS and the other still original.
Must check some boxes as it is stored for future generations haha..
By the way, I presume that you have seen Bruno Putzys' popular paper regarding the efficacy of differential/balanced signal transfer?
I have not heard of him. But i will check it out now. Thanks !
I must admit that my preamp is not very efficient...
I must admit that my preamp is not very efficient...
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Off-topic question: you post in the middle of the night, the afternoon and in the early morning... Do you ever sleep?
The 44.1KHz sample rate was, supposedly, settled upon, for a combination of reasons. Providing a 20KHz signal band, plus a sinc filter transition band. Plus, providing a total data compactness which enabled some certain classical music composition (One of Beethoven's symphonies, perhaps) favored by the then president of Sony, to fit on a single 5 and 1/4-inch optical disc. In addition, I seem to recall something about the final sample rate having to be compatible with Sony U-matic studio videotape machines, which were to be adapted to record digital audio.
OT but the person responsible is Herbert von Karajan a very close personal friend of the then Sony president at whose house he stayed whenever he was in Japan to conduct or visit.
Karajan was a very early adopter and promoter of digital recording which he perceived as being vastly superior to analogue.
And this is still true (my opinion), Karajan did not hear the dreaded FIR as it was a Philips invention....
I have not heard of him. But i will check it out now. Thanks !
I must admit that my preamp is not very efficient...
Attached, is the paper I was referring to. Bruno designed the Hypex Amp modules, and is one of the principals behind Purifi audio, I believe. Among other accomplishments.
Also, I will be be posting something later today to begin the discussion of digital interpolation-filters.
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- Home
- Source & Line
- Digital Line Level
- What do you think makes NOS sound different?