Great solution ask by email MoFo designer directly on his blog page 🙂 AudioMaker | DIY Audio Projects & More
more 'than right .... I asked you because, even if you do not know me, I esteem you a lot and I wanted to hear your opinion.
thank you soundhappy🙂
.... I do not see other solutions...
Thanks for kind words Sontero.
Anyways not without circuit modifications :
2SK180 need specialized negative (-) voltage bias circuit for depletion SIT.
PSU voltage is more up ~ +60 V probably.
Choke parameters Henrys and the A current if SiTFo is possible frankly I don't know all details
Anyways not without circuit modifications :
2SK180 need specialized negative (-) voltage bias circuit for depletion SIT.
PSU voltage is more up ~ +60 V probably.
Choke parameters Henrys and the A current if SiTFo is possible frankly I don't know all details
How generous. 
BTW, has anybody a good and cheap source for thermal pads for these giants?
The ones I've found have very expensive shipping service: more than the big 19cm*19cm pad... 🙁
BTW, has anybody a good and cheap source for thermal pads for these giants?
The ones I've found have very expensive shipping service: more than the big 19cm*19cm pad... 🙁
Thermal pads for solid state relay from Electronic Components and Accessories | MPJA.COM
this solution was on AudioMaker video, start time 27:00 Lab Hangout #2
Greetings
this solution was on AudioMaker video, start time 27:00 Lab Hangout #2
Greetings
Attachments
Attachments
Attachments
Information for Diyers who want buy THF-51S from Watanabetomoaki
watanabetomoaki | eBay
Some days SIT's auction " buy it now " are close then is open again
, please check maybe next day are lucky one or write message about availability
directly into seller contact box 😀 Greetings
watanabetomoaki | eBay
Some days SIT's auction " buy it now " are close then is open again
, please check maybe next day are lucky one or write message about availability
directly into seller contact box 😀 Greetings
Attachments
Pras1170 are new seller ( with only 4 feedbacks ) of not verified quality " sand" triodes.
Today we don't know but maybe Diyers write us is genuine stuff or not ?
Tokin SIT | eBay
Please bring Your test conclusion after deal experience.
Yeah probably NOS huge source ! Buy 4 and one is for free and the other used pcs. was tested and are cheaper 🙂
Today we don't know but maybe Diyers write us is genuine stuff or not ?
Tokin SIT | eBay
Please bring Your test conclusion after deal experience.
Yeah probably NOS huge source ! Buy 4 and one is for free and the other used pcs. was tested and are cheaper 🙂
Attachments
Last edited:
To whom this may be of interest: I purchased from PRAS1170 four units of THF-51 for my diffamp-TOKIN amp. They seem very OK for me.
He accepts offers BTW. 😉
Cheers,
M.
Interesting question!
Curves show from original Tokin datasheet is 182 ( without ES ) a 1000 watt's SIT.
Member Jama send me curve traced pairs C and D grade of 2SK180.
This is for near future builds.
You can find bunch of data and SIT modeler software on Mr Rothacher blog
AudioMaker | DIY Audio Projects & More
and video about load line and sweet spot
