Yes, that's the issue. You need +/-28VDC, i.e. 56 volts between the + and - terminals.
As for P3/P4 and R34/R35, you likely will need to make a change (not both) unless
the Idss of your jfets Q1 and Q2 are quite high.
As for P3/P4 and R34/R35, you likely will need to make a change (not both) unless
the Idss of your jfets Q1 and Q2 are quite high.
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Does anyone have a pair of those mounting brackets floating around? I'd be happy to make use of them...
Yeah these are out of stock. As with everything, if more people are interested into these, another group buy could be set up so more can be produced 🙂
I would like a pair of the brackets. Is it possible to get the drawings and I have the brackets made locally?
Sorry if this has been asked before, but what are the heatsink parts used for the drivers? A part number or a link would be great!
Also, are there any good sources for 2SJ313 / 2SK2013 left out there? NicMac is running out, and I can't seem to find them on FetAudio.com. Any hints would be great! If someone would be willing to organise a group buy, I could maybe be convinced into getting a larger batch from not-so-well known source and run them through my curve tracer for validation and matching.
Also, are there any good sources for 2SJ313 / 2SK2013 left out there? NicMac is running out, and I can't seem to find them on FetAudio.com. Any hints would be great! If someone would be willing to organise a group buy, I could maybe be convinced into getting a larger batch from not-so-well known source and run them through my curve tracer for validation and matching.
I have some extra 2SJ313/2SK2013, but I sourced mine recently enough that the cost had already started to go up.
Last I heard Prakit still has some (and his being older are less dear).
Last I heard Prakit still has some (and his being older are less dear).
Thats what I saved to project folder.
But consider to change mounting holes for DIY Audio heatsinks to 3.1-3.2mm for M3 bolts/screws.
Hi All,
did anyone save the list of the parts that came with the kit and the optional parts ?
I just took over a project and would like to double check what I need without ticking off the schematics for now if I can avoid it.
Thanks,
Max
did anyone save the list of the parts that came with the kit and the optional parts ?
I just took over a project and would like to double check what I need without ticking off the schematics for now if I can avoid it.
Thanks,
Max
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Max, the BOM for the supplemental parts can be found in post #2766 here:
https://www.diyaudio.com/forums/pass-labs/276711-sony-vfet-amplifier-2-a-277.html#post4991406
https://www.diyaudio.com/forums/pass-labs/276711-sony-vfet-amplifier-2-a-277.html#post4991406
Ok, so I just looked through the kit I receveid from member jotom750 (which was very nice to deal with BTW) and noticed that I do have 4 very small blue resitors (41.2K). I think this is/was a substitute directly from the store.
The CMF55 in this value are actually in stock at Mouser and I wil replace them.
Has anyone not used Mica & goop ?
I found these in the "japanese exotics" drawer and would like to give them a try without risking to fry the Vfets...
The CMF55 in this value are actually in stock at Mouser and I wil replace them.
Has anyone not used Mica & goop ?
I found these in the "japanese exotics" drawer and would like to give them a try without risking to fry the Vfets...
Attachments
coolnose said:
I use mica & silicone heatsink goop exclusively in all my past SS builds.
https://www.diyaudio.com/forums/pass-labs/359938-sony-vfet-csx1-adventures-grief.html#post6335476
I have not the need to go with silicone rubber pads etc. and fancy thermal paste (sometimes found in high end PC gaming machines). I do feel that as long as the surface area makes the transfer... good enough. How fast it transfers i'm not fussed about.
