Volume mod Can of Worms

[Einzeln]

This pcb (Can of worms) is a new release, so I googled it. Found a review of the original pedal that claims the pedal lacks output volume.

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Is it as simple as lowering R15 to increase the output volume?

 

[Robert]

Is it as simple as lowering R15 to increase the output volume?

Yes, that resistor is dropping a considerable amount of volume.

 

[Sturdag Lagernathy]

Any reason R15 would need to be higher than 1k?

 

[MarginalPlayer]

Did anyone find a more workable value for R15? After seeing the YouTube demo for the original, I had to order one of these boards. Hoping to get some serious AIC tone out of it.

 

[Sturdag Lagernathy]

I went with 10k cuz it's what I grabbed first. Worked for me.
The op amp needs a bit of resistance on the output to guard from oscillation from a capacitive load, but 180k seems OVERkill..

 

[Feral Feline]

 

[Sturdag Lagernathy]

Looove Colin Hay and Men at Work..

 

[micmac]

In the guitarworld review here they have a low res pic of the PCB. There's the big 1uF cube and on its lower left a resistor that looks like it's reading 1801, which would be 1k8, not 180k. Maybe they had a bad batch where the fab put the wrong resistor in and PedalPCB got one from that batch? All just speculation, but anyway, thought I could mention it.

He's the original pic extracted from HTML: Link

Mmh, but with a little imagination the last digit could be a 3 as well, in which case it would really be 180k.

 

[Einzeln]

VanWhy wrote a build report telling there is nothing wrong with the volume range.

 

[Robert]

Mmh, but with a little imagination the last digit could be a 3 as well, in which case it would really be 180k.

Yep, it's a skinny little 3. (And measured 180K out of circuit as well)

 

[Sturdag Lagernathy]

VanWhy wrote a build report telling there is nothing wrong with the volume range.

Yeah, I gotta say I tried 180k as well, and it's fine at 180k. Less volume, but not a problem amount.