GGG Mixer explanation

[Valoosj]

Today I found this 'stompbox' at GGG. I'd like to use it to have 2 delays in parallel, so I can have my normal guitar signal, one delayed signal at 600ms and one delayed signal at 1200ms. In order to do this I need some sort of mixing.
Is this the thing I'd need?
http://www.generalguitargadgets.com/index.php?option=com_content&task=view&id=68&Itemid=26

And then hook it up like this.


What would I need to put in the box with the question mark? I'd be thinking 1 input, directly attached to 2 outputs. But doesn't that cause problems?

I also saw that Nikolay (N-audio) hade something similar, but with one input and four outputs.

The mixer at GGG has four inputs, I only need to have 2 lines in parallel, so I could also combine the two boxes (the one to split the signal, and the mixer where they come back together) in one box, but how to split my signal?

[Seljer]

guitar -> buffer (like just a simple opamp or whatever) -> to both of the delay pedals

[Valoosj]

Something like the JFET buffer by Orman?
And can I just leave out 2 inputs in the mixer without having to substitute any parts, or change values?

[ambulancevoice]

Something like the JFET buffer by Orman?
And can I just leave out 2 inputs in the mixer without having to substitute any parts, or change values?

the buffer could just be a 2n3904 with with a 100k trim (to bias the damn thing) at the collector and with in and out caps and the emitter grounded, like, a bazz fuss without a diode and a bias trim
i remember Dann Green telling me thats all he used on his home made mixer (well, he just said he used a 2n3904 as a buffer)

hell, you could use a LPB as a buffer

[Valoosj]

Ah that's good. I'll use a SHO then I have those already etched here.
The output of the SHO can just go to 2 output jacks then?

Removing 2 inputs of the 4 in the mixer can also be done without problems? Or should I substitute some values then?

[cheeb]

Maybe this is what you're looking for:

http://www.diystompboxes.com/smfforum/index.php?topic=66172.0

[ambulancevoice]

Ah that's good. I'll use a SHO then I have those already etched here.
The output of the SHO can just go to 2 output jacks then?

Removing 2 inputs of the 4 in the mixer can also be done without problems? Or should I substitute some values then?

sho should be ok, i think
and yeah, run the guitar though the sho and at the output put two jacks
exactly like the sho actually! it has two outputs!

and yeah, you can add or remove inputs on the mixer

[Morocotopo]

You need exactly this:
Runoffgroove´s Splitter-Blend

http://www.runoffgroove.com/splitter-blend.html

I made it. Great little "accessory" to have, countless uses.

Morocotopo

[Valoosj]

That runoffgroove thingie is interesting, but I'm going to stick to the original plan, so I can dial in the volume of each loop separatly. Many thanks for help. I'll get to building this sucker soon.