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fiogf49gjkf0d Yup i think i will use ac for filament,in my mind i wan't to copy and build the structure of melquiades ,so i don't need to recalculate anythink,only follow the stream, but maybe if i use 6,3v filament(i see melquiades use 12,6v) i must change somethink,i'm not to expert to calculate everythink,my basic is a shop keeper, the last project is 6l6 tube, i only follow the schematic at one of website,the result is not bad for me,but the bass response is to low, 5 days ago i buy some 6C33C tube at ebay,the seller said the parcel will come in 4 weeks or 5 weeks or maybe even more(he said hard to send parcel to my country), so i still have time to learn more...
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