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Moin Michel, Quote from Leuchtturmmichel: “Micha´s Classic Blues gibt´s aber schon nicht mehr und die neuen Pickups werden schon leicht teurer... LEICHT! Aber ich werd mir tatsächlich mal das Hot Custom Set bestellen... ” Ich weiß,daher habe ich vor 4 Wochen nochh das Voodoo Set bestellt,hab´s sogar noch günstiger bekommen als das Classic Blues Set,da ersteigert,liegt seit Gestern bei der Post,werde ich gleich abholen,später dann mal berichten,wie dieses so klingt Da ich mir auch noch nen neues …
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Quote from roh: “I made a misstype, 1k + 4,7k in parallels gives 0,8k. ” Made a mistake too,you are right,my english is bad,naturally,you have to deplace the R,not set it paralell,sorry,my bad,just confused for the moment. regards, Micha
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Quote from roh: “R5 is 1k. if i put a 4.7k parallel it will gives 824k for total r5+new R. That doesn t seems to be a big change before the trimmer Dont you mean : put a 4.7k in series with the 10k trimmer to put it from 11k max to 14,7k max? ” don´t you tell me the R5 is in Series with Trimmer??,when you replace it,you should have 14,7k with R+ TR,you only had to solder it "paralell "on the R in Series with theTrimmer,so you don´t have to solder our R5 for a try. i didn´t look at the shematics …
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Try to change R5 first 4k7 you could solder it paralell to try it out
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Simply use a Power Supply with lower Voltage What is the Prob with bias? diddn´t Sound right? Quote from Hendrixianer: “The DC voltages might change due to transistor & variations, !! ” Quote from roh: “I dont know the β of each transistor, i will look how to determinate it ” The simple solution is to use a component Tester
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note: - For the bias values showed above, the fuzz potentiometer is set to the midpoint (500Ω) - The DC voltages might change due to transistor β variations, in this case, we are using a Q1 with β=85 and Q2 with β=120. If you want the see the AC128 PSpice simulation model, check the last part of this article. - The important settings to get the best sound out of a Fuzz Face is to have Q1VC=-0.5 to -0.7 and Q2VC=-4.5V. For this purpose, some designers include trimmer resistors to substitute R1 an…