Analog Delay

[Chillums]

I've been working on this Analog Delay for a few weeks and I'm waiting for my chips to arrive so I thought I would post here to see if anyone spotted anything.  Last time I did this it put my build to a dead stop cause someone here noticed that the schematic I was using was totally wrong.  I've been building boxes for three years now but still consider myself a rookie.  I have a bunch of PT2399 designs that I have built (not designed) so wanted to go a different route.  Until I get my chips I cant breadboard this sucker.    If anyone spots anything obvious please let me know.  I will be making a PCB for this once I verify.  Thanks.

[ElectricDruid]

A few things strike me, looking at that:

a) Two Repeat controls
b) Two bias networks - A & C. Why do those two op-amps get a separate bias? Why not reuse A?
c) What does VR105 after the balance trim do?
d) What's going on with the Dry input to the final mixer? There's a dry level control, but that path is bypassed by a direct dry path. Is this an either/or option for the PCB?
e) Why does the pre-delay filter run off a separate Vdd supply? What's special about that one? Everything else is happy enough on V+...

I can't spot anything that looks unlikely to work though. I'd say you're right and the next step is breadboard it and then run up a PCB.

HTH,
Tom

[Chillums]

Hi there Tom and thanks for the input.... The first repeat control is a trimmer and the second is a pot.  My thinking was that I could fine tune it better with a ten turn pot inside. 

I relabeled some of the trimmers so it would explain them better and yup I did have the dry mix bypassed.  Not sure why I did that.  Not sure why I do most of the things I do.... I just kinda do it...   My thinking on the VDD bias is to prevent noise and current draw from the led but your prob right and should just put everything on the same bias network (A).  Like you said its used in the pre-delay filter too so again not sure why I did that either.  Thanks again for your input bud and will keep you posted when I breadboard it this weekend hopefully.   Do you think anyone would be interested in a Delay like this?  That's of coarse if it works.  I edited the schematic in the last post based on what you saw.  Thanks again bud!!