Thank you very much Alfred , thats what i thougth but not knew .
I´ll try C5 at 220nF , but first i´ll find out if it is really a problem .
Have anybody thought about the supply voltage for the opamp? Not much headroom for pleasure with the 18v🙄
What do you mean ?
Do you believe increasing that voltage would bring some improvements ?
Maybe a dedicated psu for the servo alone ?
Don't think it will help anything. It's true that the servo has to work much harder than usual but raising the supply will only safeguard against extreme fluctuations.
I wonder if someone with better understanding of the circuit would not explain the thinking behind the servo. It seems to me there are 14 transistors whose sole purpose in life is to apply the servo output to the input pairs - could this solution be just too complex and bringing additional dc noise and drift?
I wonder if someone with better understanding of the circuit would not explain the thinking behind the servo. It seems to me there are 14 transistors whose sole purpose in life is to apply the servo output to the input pairs - could this solution be just too complex and bringing additional dc noise and drift?
I mean that 18v is the absolute max that the opamp can take. so better be shure that it doesnt exeed 18v
I believe it is spec to +-18V and the Paradise shunts output +-18v sharp.... nothing to worry about.
Thanks RCruz, this tool I didn´t know. I tried everything, 22K, 1,2k till down to 120R, but nothing was helpful. Today I will install the CompCaps (arrived today). And will relisten. It is really boring, belive me.🙁
Hope it sounds better😱
Did you measure the caps and resistors you used in the riaa filter before you soldered them in the boards ?
What are CompCaps ?
What are CompCaps ?
Yes I did. What should be 11uF is 10,96uF
And the 33,3uF part is 33,29uF
the Resistors I dont measure, but if I have my soldering station warm, I will recheck.
As a "Neumann " I used a blank wire (as everybody did).
CompCaps = the compensation caps in regulator.🙂
Libby try sticking a 2.2nf polystrene cap on the input parallel with the loading resistor that should help tame any forwardness. I use 4.7k and 2.2n on my Benz LP (38 ohms impedance)
My Paradie is runing !
No hum or hiss , quite dead .
I´m listening since an hour and first notice is details come clear but the music flows .
Sound is wonderfull .
The outputoffset is no problem .
I never heard my colibri sounding so sweet rich and naturally.
Many many thanks to Joachim for the design , Birger for the groupbuy ( yes everything was right except the two 2K trimmer ) , everyone else who helped in this thread and specially to Alfred for his support .
No hum or hiss , quite dead .
I´m listening since an hour and first notice is details come clear but the music flows .
Sound is wonderfull .
The outputoffset is no problem .
I never heard my colibri sounding so sweet rich and naturally.
Many many thanks to Joachim for the design , Birger for the groupbuy ( yes everything was right except the two 2K trimmer ) , everyone else who helped in this thread and specially to Alfred for his support .
Please let me know the resistor values also.
Can you tape the output sound of your setup and post a file here so we can really understand what you are hearing ?
I will try to make a record by giving the signal direct to CD-Recorder and rip it by EAC to wav (or some other???).
Yesterday I tried more weight (3.0g), less weight (1.5g), solder 1,2kOhm and 2,2nF in input and solder the compansation caps in.
But the fizz/lisp in voices are still there.
I think , like Ralf do , your Highoutput MC is not the right thing for paradise .
I would try an cheap/used or lent Low MC .
It was not designed for high output carts but it works wondefully with a DL160 with 1.6mv output, so that does not seem to be the problem.