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20th April 2011, 04:34 PM
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#1 |
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diyAudio Member
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Quick question on pots for guitar pre
Hi, I'd like to make this simple preamp for the guitar amp of a friend of mine.
I only have 250k pots for VR3A and VR4A at the moment. Do I need to scale the capacitors accordingly? http://sound.westhost.com/p02_fig2.gif
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Gravity - Making the G since 13.7 billion B.C. |
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20th April 2011, 11:43 PM
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#2 |
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diyAudio Member
Join Date: Nov 2008
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Download the "Tone Stack Calculator" and play with the "James" circuit.
The connection between L-Tape and pin 1 of U1A should not be there. Also rethink the need for R21/R22 and C4/R17/R24. E |
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21st April 2011, 10:17 PM
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#3 |
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diyAudio Member
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Thanks E,
I completely forgot about this awesome software. I ended up building a variation of the James circuit. Tonestack FTW. I'll report back once it works.
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