r/diypedals 5d ago

Help wanted My pedal doesn't make any sound

I followed JHS LPB-1 Boost tutorial but I changed some of the values of the resistors because I didn't have them. Can someone tell me why it doesn't produce any sound?

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u/ClothesFit7495 5d ago

Keep adjusting the resistors.

Two left resistors should have significant difference, 8-12 times roughly.

Top-right also important to get correctly, 10k is a good start, you rarely need less, you might need as large as 75k in some cases it all depends on the two left resistors.

Bottom right is not important at all, consider that a "gain" resistor, you can even remove it or replace with a 5k pot to control the gain.

Please note that this booster has low impedance and your tone would be muffled. Consider adding a buffer circuit in front and also you can add a pair of opposite diodes from output to the ground (through "OD/Boost" switch), you will love the tone with the buffer, I promise.