Ibanez CS9 Lag Control Help

[Bio77]

I'm working on a layout for a CS9 with Walrus Audio Julia style controls.  I believed the lag control was just a 250k pot substituted for the 220k resistor after the depth pot and before Q5.  However, I looked at the Pedal PCB build docs, which now has a schematic, and it is something completely different.  I want to implement this set up in the CS9 circuit but I'm not sure how to alter the values. I need some help from the Jedis!  Advice would be much appreciated.   

CS9 Schematic

Julia Schematic

[benny_profane]

It seems like it's already there with the CLOCK trimmer. That block is pretty much the same (just presented differently). Although, the supply voltage is lower in the CS9.

Edit: the Julia is almost an exact copy of the CE-2. When I compared them, I only found a handful of component value differences.

[Bio77]

It seems like it's already there with the CLOCK trimmer. That block is pretty much the same (just presented differently). Although, the supply voltage is lower in the CS9.

So cool!  I totally missed that! 

[diablochris6]

I was playing around with an old CS9 build I had that was giving me problems. Turns out, a wonky op-amp was giving me a ton of noise, but I swapped it out with a OP2134, and it was back up and running. One thing that bothered me about the build is I could hear the BBD noise fade out as the noise gate kicked in when I stopped playing. The noise gate circuit looks to have a lot in common with some of the envelope generators I've seen around the web. Those EGs have attack and decay controls roughly around where R50 and R51 are, respectively. I ended up swapping values on R51 to see if it would affect the decay time, and it worked! I dropped that 330k down as low as 12k and the BBD noise pretty much cuts out as soon as I stop holding a note. Just an interesting tidbit of discovery that someone else might want to look into or incorporate into another effect somehow.

[Bio77]

That's really cool, Chris!  I was planning to incorporate this gate into some other circuits.  I think a flanger would benefit greatly. Alas, work has been cutting into my circuit time, lately 

Just for thread completeness, the schematic I posted here has an error in the gate.  This one is correct and verified with the exception of the chip substitutions I made: