that's it for tonight
will try on Monday to observe Klunk!! region via scope , across inline resistor or simply across rail wire ;
I'm not overly optimistic , caps being on sluggish side , but I'll try
in any cse , simply observing THD behavior , I think it is safe saying that simulations are confirmed , bloody thing being in A class in this brackets:
25W/8R
43W/4R
21W/2R
few watts up , or down .......
YouTube
will try on Monday to observe Klunk!! region via scope , across inline resistor or simply across rail wire ;
I'm not overly optimistic , caps being on sluggish side , but I'll try
in any cse , simply observing THD behavior , I think it is safe saying that simulations are confirmed , bloody thing being in A class in this brackets:
25W/8R
43W/4R
21W/2R
few watts up , or down .......
YouTube
that day I was able to complement just 10W tests .... couldn't get more at 8R , due to EMU output swing (non)capability
so :
10W/8R
10W/4R
10W/2R
What sort of measuring tools and setup are you using for these measurements? Might be helpful for "Adjusting P3 thread".....
Thanks,
Russellc
Most similar model to 2SK2145 on standard jfet would be 2SK117. Compared to the K170/J74 complementary pair, the K117 SE buffer with ideal parts simulate to 33% lower H2 and 66% lower H3. I also did not see a CBL for WCF topology on the sim file. On a build however, phase of H2 will be dependent on parts selection.... did use 2SK170 model instead of 2SK2145 (half) , ...
As you said anyway, it's a trivial matter of reversing speaker polarity to confirm and choose desired connection. Have fun.
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