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Old 25th April 2016, 07:17 PM   #1
Lukaamp is offline Lukaamp  Croatia
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Default AX84 - Cathode resistor replacment

Hi, can I replace cathode resistor of 130 R 1W with some other value (100R, 150R, 180R ..etc )? And if I can what it heppens?

Thx.


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Old 25th April 2016, 08:01 PM   #2
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100ohm --> more plate current, tube runs hotter, may be too hot
150ohm --> less current, tube runs cooler, less output
you can however connect two 270ohm resistors in parallel, that gives you 135ohms, close enough ...
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