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Fever 6J1 pre-amp max input voltage ?
Fever 6J1 pre-amp max input voltage ?
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Old 12th July 2018, 08:03 AM   #1
fxlaptop is offline fxlaptop  United States
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Default Fever 6J1 pre-amp max input voltage ?

hey guys i need somebody more experienced than i am on these 6j1tube pre-amps.. my transformer is 15v ac but the pre-amps input is 12v.. no max listed..can i get away with 15v ac instead of 12v ac? this way i dont have to drop the voltage or add a reg, or converter etc. i appreciate anyone that has one and can answer this for me..

much regards, Harris
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Old 13th July 2018, 10:22 AM   #2
JonSnell Electronic is offline JonSnell Electronic  United Kingdom
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You will need to increase the value of R1 from 2R2 to possibly 8R2 ish otherwise as the power supply is regulated, it should be fine.
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Old 13th July 2018, 11:09 AM   #3
fxlaptop is offline fxlaptop  United States
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thank you very much for your reply.. just what i needed !!
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