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Hello all,
I'll try again...
I'm having a hopefully simple issue with the Windbag. https://www.madbeanpedals.com/projects/_folders/VFE/pdf/Windbag.pdf.
It works, but I get a steep volume drop and an angry LPF/muffled under-the-blanket sound when the pedal is engaged.
Tracing the audio signal it hits the relay which then sends to R1. The signal going in to R1 is strong..coming out the other leg the vol. is severely dropped and muffled and flows through the rest of the circuit at that unusable volume.
I reflowed R1, I switched R1 out for another 220K, and then reflowed that one too..and the same vol. drop/muffle happens.
If I crank the amp, I can hear everything else on the pedal doing their respective jobs; delay, reverb, envelope, etc, and sounds cool! It's just at a very low volume.
If I reduce the value of R1 to around 10K, the audio signal reaches unity, but the LPF sound on the alleged "dry" signal remains.

I checked the voltages, and they are a bit off, but I don't think they're show-stopping bad. I subbed a TL072 for the OPA2134 and a TC1044SCPA for the 7662B. My DMM doesn't do mV, so my TL072 voltage measurement is incomplete. sorry.

Any help/suggestions are greatly appreciated.

Thanks.

Hello,
I'll try again...
I'm having an issue with the Windbag. https://www.madbeanpedals.com/projects/_folders/VFE/pdf/Windbag.pdf.
I get a steep volume drop and a muffled under-the-blanket sound when engaged.
Tracing the audio signal it hits the relay which then sends to R1. The signal going in to R1 is strong..coming out the other leg it's severely dropped and muffled. I reflowed R1, I switched R1 out for another 220K and the same vol. drop/muffle happens. 
If I crank the sound, I can hear everything doing what it's supposed to do delay, reverb, envelope, etc...just at a very low and muffled volume.

I checked the voltages, and they are a bit off, but I'm not sure what to do about that.
Any help is greatly appreciated.

Thanks.