Removing a pot.

gonzii · 2nd July 2005, 12:23 PM

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

Pentium100 · 2nd July 2005, 12:57 PM

If there is another resistor between first tubes grid and ground (or negative supply) then no..

gonzii · 2nd July 2005, 01:07 PM

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

Robert McLean · 2nd July 2005, 01:20 PM

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.

gonzii · 4th July 2005, 08:15 AM

Thats all i needed. Thank you.

Filip

2nd July 2005, 12:23 PM	#1
gonzii diyAudio Member Join Date: Jun 2005 Location: warsaw	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

2nd July 2005, 01:20 PM	#4
Robert McLean diyAudio Member Join Date: May 2005 Location: Stittsville, Ontario, Canada	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. __________________ Robert McLean

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2nd July 2005, 12:57 PM	#2
Pentium100 diyAudio Member Join Date: Jun 2004 Location: Kaunas	If there is another resistor between first tubes grid and ground (or negative supply) then no..

2nd July 2005, 01:07 PM	#3
gonzii diyAudio Member Join Date: Jun 2005 Location: warsaw	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

4th July 2005, 08:15 AM	#5
gonzii diyAudio Member Join Date: Jun 2005 Location: warsaw	Thats all i needed. Thank you. Filip

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