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Hi, I just finished my Current Lover, called it FemMod and totally love the sound of it. It sounds great on guitar level but can't really handle fx loop levels no problem afterall.

Hi all,

I am building a double version of the Total Recall in a very big box.
I implemented a few extra switches for all the stereo routing options and all goes well till now except tapping off the CP1 and CP2 pulses from one board to the other for synced Left/Right delay time.
I cut the clock pulse traces on the second board and routed them to a DPDT switch for switching between clock sources board 1 / 2.
When I use the clock pulses from board 1 on the second board things sound like a distorted clock whine (only on the second board). On the scope I can't see any issues with the clock quality and moving cables/shielding etc. doesn't affect the issue. Also in normal mode the extra wiring to the switch doesn't bring any clock whining.

I am wondering what is wrong. The boards share there positive ground perfectly.

Also the whining's amplitude is modulated with the amplitude of the delayed audio so you hear nothing when not putting any audio and the whining fades out perfectly with the audio envelope.

All tips are welcome and thanks in advance!

SOLVED: It was a bad grounding of the cable shield after all.

Working perfectly but still needs 2 holes to fill. (Peak LED and Direct out). All tips are welcome.

After succesfully building my total recall and loving it and I am thinkering about making another stereo ping pong version using 2 PCB's.

Before throwing myself into that project a am looking at options.

I am planning to only populate 1 pcb with the clock and modulation circuit and share the CP1 + CP2 signals over the TRXPN connector.
This way things would run in perfectly synced tempo.

I am planning to use a fixed feedback trimmer or fixed voltage divider resistors for feedback from the primary to the secondary delay for unity gain between left and right echo.
On the other side I am planning to use a normal pot for the feedback from the second delay back into the primary delay to regulate the actual overall feedback.
I don't know if it might be better to use a stereo feedback pot for cross-feedback. It might be more musical that the feedback get more silent every jump from left to right. On the other hand the louder first repeat might make things sound a little out of balance. What do you think?

It would be cool to have both possibility's to have mono in -> ping pong out and stereo in -> ping pong out. The problem i can think of is how to mix the dry signal into both outputs in mono->ping pong mode without adding an extra board containing a summing opamp.
I have an analog ping pong bbd, (the monacor eem-2000ST) and love how it sounds but it only contains 2xMN3005 so the total delay time is short and there is no modulation). The monacor also lacks the dry signal to the right output in ping pong mode. Something i always disliked. It is OK in 100% wet as a send fx but I would improve that in my ping ping total recall.

Any advice is welcome, thanks in advance.

Kind regards,

Gerd

[SOLVED]
Hi all I have an issue with my new total recall build.

It sounds like one of the companders is acting like a noise-gate and turning off the dalay tails at about half of the volume range of the BBD chip. Everything else of the pedals sounds normal to my ears. When setting the feedback high enough it loops forever and a couple of repeats are also possible but a nice setting in between with nice fade out is not possible.

Does anyone know how to adjust the threshold of noise-gate part of the compandor cirquit?

Thanks in advance,

Gerd