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Old 2nd July 2005, 12:23 PM   #1
gonzii is offline gonzii  Poland
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Location: warsaw
Default Removing a pot.

Hi,

I am newbe in this subject. I would like to remove a 100k pot in my 300 B amp. Do I need to replace it by 100 k resistor?

Thank you,

Filip
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Old 2nd July 2005, 12:57 PM   #2
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If there is another resistor between first tubes grid and ground (or negative supply) then no..
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Old 2nd July 2005, 01:07 PM   #3
gonzii is offline gonzii  Poland
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I am not sure. All I know that this pot is between first and second stage.

This is a Audio Note Kit One schema link:

http://www.audiodesignguide.com/se/AN1cct.gif

Thanks,

Filip
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Old 2nd July 2005, 01:20 PM   #4
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You do not absolutely need to add another resistor, the 1 Meg resistor R21 is already there. The first stage gain will go up slightly.

Personally I would not literally remove the pot, but just wire the top of the pot to the wiper, ie connect C9 to R15 and R21. That way you will have less work to do if you change your mind.
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Old 4th July 2005, 08:15 AM   #5
gonzii is offline gonzii  Poland
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Thats all i needed. Thank you.

Filip
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