Paralyzer with parallel/series, phase inverter and order switch

gKorg

New member
Hi guys
It's my first post here so hello everybody :)

I would like to build a Paralyzer. I heard it can create problems with phases sometimes, depending on the pedal it's used with.
For this reason i was thinking about adding a phase-inverter switch. I found this and i added to the Paralyzer schematic but i'm not really sure where to place it, so i placed it just before the sending of one of the two "sides", like this ( i forgot to draw the pin 4 of the inverting-phase IC to GND). (i actually asked for help also on DIYSB and RRR told me to change it into this)
i would like to add also the possibility to have it series or parallel using a 6dpt (or better two 3pdt) and a series order switch using another 3pdt
In this photo the wiring of the parallel/series is kinda visible (there is some overlapping and maybe two mistakes). I assume it's:
first line: connected in couples 1-2 3-4 5-6
second line: jack tips connections 7:OUT 8:Return2 9:Send2 10:Return1 11:Send1 12:IN
third line: connections to board in the same order 13:OUT 14:Return2 15:Send2 16:Return1 17:Send1 18:IN
Does it make sense?
To add a order switch i would just connect the pins from 1 to 6 following this wiring (the one in the middle)

Questions:
1) is the invert phase positioning correct?
2) do you see any issues in the schematic or wiring?
3) Do i need to use both opamp of the TL072 in the inverting phase part? Couldn't i just simply substitute the TL071 with a 072 and use only one opamp to invert the phase? That would save me a lot of space on the board

Thank you very much for you help

(i asked for help with this on other forums too but i guess spamming this around will get me more help) :D
 
oh thank you very much. I think that's what i needed :)
Works well for me, I am happy. Instead of the switch or jumper for the phase inversion, I just soldered decoupling caps (after it was pointed out to me in that thread) in as jumpers instead of revving the board, you can see it in the bottom right of the last picture/last post https://forum.pedalpcb.com/threads/...ffer-vs-after-effect.24318/page-2#post-312650. So the schematic isn't fully up-to-date with what I ended up doing
 
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