I saw Martina using those cristals inside the Garrard TT in Krefel and I also met another guy who sold them and had a really "dead" sounding room full of those..... Piramidal effect ?!
My Paradise build is almost completed... just lacking 1uF caps... where can I get those very small caps ?
Can I use tantals ?
Can I use tantals ?
Ok, I have to do some catching up here. Circuit in post #5083 on first glance has same problem, T19&T21 with T20&T22 forms high impedance ccs'es and currents are lost again. Will put it in sim to check first. Post #5097 looks promising, were do bases from T19&T21 goes to ?
Yes, 5097 will work very well. T19, T21 are ground referenced cascodes. i will draw that part for you in a a minute. If we could drive that cascode too from somewhere is not clear at the moment. In this case i would rather say not.
OK, you where faster and i like your solution better.
Here is what i have drawn up in the meantime, but that is obsolete.
Here is what i have drawn up in the meantime, but that is obsolete.
Hi Ricardo, I would not. Tantals are very sensitive to the wrong polarity, and the 1uF is used in the servo if I'm not mistaken so it may see both polarities.... you could put a bigger cap and reduce R48 accordingly, for example.
(have a bunch of these caps, should have put them in the bag to you... if only I had known.... ;-)
Eager to hear what yours sounds like ;-)
Hi Alfred
Thank you for your comments and unconditional help. In the servo I am going to use a very good quality film cap I salvaged from another project.
I will try to find some small films in RS for the 1u on the shunts.
This is the most beautifull pcb I ever worked with... Soldering is a breeze and I can even replace parts without "pad lifting" issues.
I took my time to match all the transistors to 1%. Also matched all resistors, zeners and leds 🙂 (I must measure everything because my sour eyes do not help a lot)
After the last evolutions I believe it will sound wonderfully.
I am looking forward to make a comparison listening session.... I will be moving to Switzerland in the near future (where my Dear Wife already set a better lab for me) so it will be easier for me to travel and meet other Mpp Team menbers 🙂
Thank you for your comments and unconditional help. In the servo I am going to use a very good quality film cap I salvaged from another project.
I will try to find some small films in RS for the 1u on the shunts.
This is the most beautifull pcb I ever worked with... Soldering is a breeze and I can even replace parts without "pad lifting" issues.
I took my time to match all the transistors to 1%. Also matched all resistors, zeners and leds 🙂 (I must measure everything because my sour eyes do not help a lot)
After the last evolutions I believe it will sound wonderfully.
I am looking forward to make a comparison listening session.... I will be moving to Switzerland in the near future (where my Dear Wife already set a better lab for me) so it will be easier for me to travel and meet other Mpp Team menbers 🙂
Yes, Ricado, we should do an ATL meeting. Preferably in my place that is aprox. in the middle. In may it is beautiful here.
You can get cheep flights to Paderborn-Lippstadt airport. We can also visit the Nixdorf Computer Museun and later have some Suschi in the bar of my friends. Fear not, it is not as expensive as in Düsseldorf.
You can get cheep flights to Paderborn-Lippstadt airport. We can also visit the Nixdorf Computer Museun and later have some Suschi in the bar of my friends. Fear not, it is not as expensive as in Düsseldorf.
Looking forward to that meeting 🙂
You will be amazed with the outcome of your work.
PS: I love German beer.... !!!
You will be amazed with the outcome of your work.
PS: I love German beer.... !!!
We have a lot of local beers here, Warsteiner, Veltins and Westheimer are only the most famous. I can arrange a Warsteiner Brewery tour. That is a classic.
Can´t wait to see your build and hear it "through your ears ".
Can´t wait to see your build and hear it "through your ears ".
I experimeted a special bear that Jürgen was drinking in Krefeld... awesome... he told me it was mixed with mushrooms 🙂 I did not mension Dr. Hoffman of course.
Thank you for the invitation... I am also eager to know your "voicing" options.
Thank you for the invitation... I am also eager to know your "voicing" options.
If Albert is also there with some merchandise, call me in. 😉 But I think Albert left our planet. Maybe the guys from ATL invented a teleport... Who knows?
Hi, I used OPA134 for the servo. And I was listening to both FPS and PAradise just before I left, in fact my wife was out so I had a few hours with the LP12, the phono stages and my headphone, with undisturbed back-and-forth (usually people get that "he's crazy" look when they see you listen the same song multiple times ....). That was the basis of my last comments.
back on sunday, and I should be able to do some measurements next week which should really answer a few questions....
