Double Pendulum - Right side much louder

[EisengesisFX]

This build went totally smoothly other than my current issue as per the title. I tried swapping a fresh TL074 into the left side, but the volume difference still persists.

Bonus question, more mod-related though: what components would I change to increase the Depth amount? I'd love to be able to have more of the Pendulum's phasey quality.

As always, apologies for my potato camera.

 

[Robert]

My guess (assuming all component values are correct) is variations in LDR resistance.

Does it make a difference if you swap the LDRs around? (Left/Right)

You can also fine tune by adjusting the distance from their LED.

 

[EisengesisFX]

Looks you're spot-on, @Robert. I think I need to cut down a fresh quartet of GL5516s. Turns out I'm shy just one, so looks like a PPCB order is forthcoming! A+ upsell! No seriously though, thank you for the help.

 

[Robert]

You might can find a happy middle ground by swapping them around and bending the more sensitive ones away from the LED a bit.