Actually your boards sounds pretty much like mine (as you would expect - its good that there appear to be little variations from build to build!), but my impressions are limited - I only tried them for an hour or so. More listening tonight...
That is really good news. Hesener, could you post a picture of what you have done to the old version ?
What value do the ceramics have ?
What value do the ceramics have ?
will do once i can convince myself to take it back out of my system ;-)
the caps are 10uF (!) 50v, simply because thats what i had on hand. have put 8 of them per rail. that most certainly is overkill, 100nF or so might have been good enough.
(frans please note your shunt was not impressed at all by this very low impedance, works just fine!!)
now back to massive attack "100th window"......
the caps are 10uF (!) 50v, simply because thats what i had on hand. have put 8 of them per rail. that most certainly is overkill, 100nF or so might have been good enough.
(frans please note your shunt was not impressed at all by this very low impedance, works just fine!!)
now back to massive attack "100th window"......
Good to hear that it can be used for something else than SWING- music...funny it took a mechanical engineer to tame it...🙂
Do not underestimate mechanical engineers (that is where my study started, I soon realized that this was a dead end 🙂 [I was about 16 years old]). Now I am a ‘computer algorithm specialist’/’system programmer’, and actually I do realize that both ting are the same. So after some years (about 40) I have to say, mechanical engineering is not the dead end it may I thought it was 🙂
Indeed, After I completed my Civil Engineering degree, I started to work as a programmer/analyst and ended up working as a database manager, specialized in quality. Now I understand that my Civil engeneering background enables me to understand tech books of all kinds.
Yes basic skills of understanding is the same, springs, masses, dampers, materials eigenvalues.. and hydro mechanics..All have anologies in the EE-field. For me venturing into this has been quite a travel..A good hobby that fits my playing with speakers perfectly...
Today I picked up the boards for power buffer and high speed preamp.
I will start assembly a.s.a.p. - but not before monday. The gerbers need correction as the layer I've been using so far for silkscreen was not printed by this PCB manufacturer so to avoid problems for others (gerbers will be available for others) I will manage it with other layer. The photo shows prototypes - on top left to-99 version for preamp, below is smt version. Power buffer boards x4 on right, top/bottom side.
Joachim I will try to send the boards to you tomorrow. Cap multo is not yet produced - hope to have it soon.
I will start assembly a.s.a.p. - but not before monday. The gerbers need correction as the layer I've been using so far for silkscreen was not printed by this PCB manufacturer so to avoid problems for others (gerbers will be available for others) I will manage it with other layer. The photo shows prototypes - on top left to-99 version for preamp, below is smt version. Power buffer boards x4 on right, top/bottom side.
Joachim I will try to send the boards to you tomorrow. Cap multo is not yet produced - hope to have it soon.
Attachments
Mad, that looks very good. Thanks for sending me the boards.
Yes, i would like to beta build the new Paradise.
It gets moving again !
Yes, i would like to beta build the new Paradise.
It gets moving again !
Yes, BJT´s can pick up radio. JFets are more immune because they do not behave like a simple diode. That can be tamed with an input filter, say 1,2uH and 47 Ohm parallel.
The power buffer and the high speed preamp was posted as simple hand drawings. We will of cause post the schematics in better readable form. The "policy" at the moment is simply that we first build and test and when it works without trouble we publish the schematic. I would like to avoid the delay we had with the original Paradise.
This kind of very high speed circuits are quite challenging but we get it working, sure.
This kind of very high speed circuits are quite challenging but we get it working, sure.
Ricardo, when will you get your boards back and of cause i am curious how it sounds at your place !
Indeed... I am also looking forward to compare it with my latest SE build.
I will post my subjective listening opinions as soon as I have the boards.
I am allready working on the raw DC psu 🙂
I will post my subjective listening opinions as soon as I have the boards.
I am allready working on the raw DC psu 🙂
On a sideline Hesener and i are discussing how we can implement a Pre-Pre into the headshell. The never ending story continues.......