How to connect a JEDSPEDS K buffer to a BYOC Classic Comp??

[Elysiumfx]

Hi Guys,

I've got no mental capacity for this today. I'm just staring at it. Please help.

I have a BYOC Classic Comp made up and ready to go with the normal 1,2,4,5,7,8 leads to go to the switch. But as its the first pedal in my long chain, I thought I would add an "always on" K Buffer to it. Purchased one from Jedspeds and happily soldered it up. However, Jeds stuff just has a G, Out, In and +9v - this one connects to the 3pdt directly and takes the in and out T&S directly off the mini board.

Should be simple stuff... but today I'm paying for my weekend. It's just a different way to set up the switch. So how can I make the two work together?

What are the 1,2,4,5,7,8, pins on the BYOC switch set up?

Thanks in advance. Sorry for what should be an easy request.

Dave

[MikeA]

If you're using the LED on the buffer, just tie BYOC hole 5 (circuit in) to buffer CI, and BYOC hole 7 (circuit out) to buffer CO.  Wire the buffer as the instructions indicate.   Leave these BYOC holes vacant since the buffer is doing all the switching:  IN, OUT, 2, 1, 4, 8.

If you want to use the LED on the BYOC, do the wiring above.  But don't equip D2 on the buffer.  Run a wire from the buffer D2 (LED) cathode hole (switched ground) to BYOC hole 1 (LED cathode.)

This will put the buffer in front of the comp, always on, with buffered bypass.

[Elysiumfx]

Thanks Mike. This really helped. Although my brain is still fried. I've built two of the K Buffers now and don't seem to be getting anything from them. I'm not sure what the issue is, but the signal isn't getting past the OP Amp. Possible voltage issue? I spent most of the day on it yesterday, and then switched boards assuming that I'd made an error. Second one does exactly the same. As soon as I supply Power to it... silence. I've traced the signal through the input and to the first cap, but that's about it. It just sits on lug 3 of the op amp. I've tried five or six IC's to check, and they are all doing the same. More research required I think!
 

[Elysiumfx]

I'm an idiot - TL071 not TL072.

Sorted!