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FS: Paradise Phono PCB Set

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#149
Mine just arrived..

Thank you..your efforts are noteworthy.

Oliver 20200303_134551.jpg20200303_134554.jpg20200303_134557.jpg
 
#153
Algar_emi said:
No problem. It seems there is some interest in the Calvin Buffer. Check my prototype pcb. If there is enough interest I may offer these pcb as well. Let me know...
SB
Click to expand...

Id be interested as well. I tried it on vero board but was too noisy. Could have been using an older build guide too, dunno. Would love to try on a proper pcb. Paradise sounds incredible as it is but if it could somehow be improved... 🙂

TJ
 
#157
Before you commit to the Calvin, take note that it uses difficult to source/obsolete JFET. That was the main reason why I didn't offer the buffer to start with. So if you don't have these JFET already in stock, you may have a hard time building it. To replace the 2SA1381A I used myself BD140. The PF5102 JFET needs to be matched, increasing the difficulty...
Check the schematic...
 

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#158
Algar_emi said:
Before you commit to the Calvin, take note that it uses difficult to source/obsolete JFET. That was the main reason why I didn't offer the buffer to start with. So if you don't have these JFET already in stock, you may have a hard time building it. To replace the 2SA1381A I used myself BD140. The PF5102 JFET needs to be matched, increasing the difficulty...
Check the schematic...
Click to expand...

Could the obsolete parts not be removed from the design and redesigned and replaced with a modern alternative?, call it the Sylvain revised Buffer?

Seems to be the most obvious way around the problem.

That may be a stupid suggestion but i am not entirely sure.
 
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