OD pedal emitting popping sound when switching "on" and "off" need help !

[hopkinWFG]

Hi guys i have an OD pedal that emits off a huge "pop" or tud" sound off from my amp cabinet when i hit the switch "on" and "off" .... i am stacking an OD infront of my amp....
i am thinking if the problem could be the bypass switch itself?

i had tested out and it seems like the "pop" or "Tub" sound appears larger when i turn up the volume level and gain level......

kindly seeking help from you all pedal gurus out there

[Keppy]

Do I understand correctly that you are using an OD pedal into a distorted amp? If that is the case, what is likely happening is that a fairly inoffensive switch pop is being amplified by the high gain in the amp itself to a much louder volume. If that is the case, then how you fix it will depend on the construction of the pedal. If it's true bypass, the common method is a "pulldown resistor," which is a high-value resistor (1M-4.7M usually) between the effect input and ground.

[hopkinWFG]

Yes i am using the OD to gain stack my already overdriven amp.... thanks for your great help... but i would like to know if by changing the resistor would it change my pedal character and tone?

i have compared my other OD pedal as well on the switching sound but it seems they do produce a way softer and is not as obvious as my current OD which i am using....

[Keppy]

The reason for the high value of the resistor is to set the input impedance high enough not to effect your tone. A 1M input impedance is similar to that of most tube amps. The tradeoff is, the higher the resistance, the louder the pop; the lower the resistance, the greater chance you'll lose treble due to signal loading. If you have a 4M7 pulldown resistor, you can try lowering it to 1M, and in most circuits you likely won't hear the difference. If you have no pulldown resistor, try a 1M. If the pop goes away but you lose treble, then go higher on the resistance until you find the right compromise.

Some pedals have a pulldown resistor at the output as well, but most overdrives don't. I assume that's because the volume pot most of them have as the last thing in the circuit serves that function just fine, but I've never seen it discussed.

Again, this applies to true bypass pedals with a standard DPDT or 3PDT switch. If your pedal has any other kind of switching (like the Boss momentary switch scheme, or relays, or anything like that) then you'll need someone else's advice, as I haven't built/studied any of those.

[hopkinWFG]

wow ! thats profound indeed thanks for your good information well the problem is i have gotten the pedal from a manufacturer,i guess the manufacturer would have stated a tight control on resistance tolerance to even out this matter as advise... Mmm i guess this problem i am facing is not what everyone faces whom gotten the same pedal thou...

i dont know if i wanna give it a try but i'll see if i could contact the manufacturer to see if i could get a one off exchange .... thanks !