This is the story. I just helping my friend clean up his mini storage and it has "tremendous" amount of unused exotic parts there, such as Black GAte WKZ series, Elna Cerafine, ICAR SP25 paper in oil (I have some as well), Sprageu Vitamin Q door knob type.......And he give me some Sprage those are NOS. The 40mf that referring to is ICAR SP25 Paper in Oil type and rate at 1000V. However, is that ok if using those position for "20mf" as cap rate at 330VAC (around 400VDC) since the Sprague rated at 330VAC?
As I said very beginning of this thread, this is a rebuilt of my stock Dynaco ST-70. First, the output section supply will have Unlytic 100mf 750V (also unusded parts from my friend) there and the input section has 100mf as well (2 x ASC X386S 50mf 440VAC in parallel), but I want to use the Sprague Vitamin Q in the supply for the "driver" section (the triode section 7199 for phase spliiter). Unfortunately, I don't have that much Sprague door knob from my friend only 20mf (2.5mf x 8 ).
As a result, it has 100mf for the output section; 100mf for the input (pentode section of 7199) and 20mf for the driver (7199 triode section of 7199) in the supply. IS 20mf for the driver, alright??
I remembered that I read some article from DHTRob and he suggested that avoid large values when using PIO cap, and it will slow down the sound.
I have more question about the VTA M-70, but better start a new thread to avoid confustion.......