Help with wiring Buffer/Tuner Mute box

[Dave Simpson]

Can someone help a newbie out with this project? I have a GGG IC Buffer PCB I want to use in a Buffer/Tuner Mute box and can't seem to find a wiring diagram to do it. Is there a simple way to do it modifying the wiring diagram on page two from GGG?

http://www.generalguitargadgets.com/pdf/ggg_ic_buffer.pdf

Any help is appreciated!

[Fleetdog]

What exactly are you wanting?  I'm assuming you want the one input and two outputs (one to the tuner and one to the rest of your signal chain), but what do you want beyond that? Do you want the switch to true bypass the buffer like in that diagram?  Do you want indicator lights? If so, what do you want them to indicate?  Do you want the signal to always go to the tuner or only when the other output is muted?

If this were for me, I would wire it such that only one of the 2 outputs had the signal coming at any given time while the other output is grounded.  You could also add a single led or a pair of leds to show you which output is live.   To do that, you would use the diagram on page 3 but connect a 3P2T switch between the output of the buffer and the jacks.  If you look at hooking up one of the 3 switches inside the 3P2T switch first, hook the tip of one output jack to the center lug.  One of the outside lugs then gets the output of the buffer and the other gets grounded.  Hook up the second output to another one of the switches the same way but revers which side ground and the buffer output go to. Now if you wanted 2 leds (one for each output) you would connect both leds to power as shown in the diagram but connect their negative sides to the outside lugs of the remaining switch.  Connect the center lug of that switch to ground.  Now only one led will light up at a time and only one output will have a signal at a time.

[Dave Simpson]

Thanks for the info.

I wanted to basically have the LED on when the Tuner Mute was engaged. So the box I want to make would have three jacks (in, out, and tuner), the foot switch and one LED. The output to the tuner wouldn't need to have a buffered signal, but if it made the wiring easier to have it buffered then I'm sure it wouldn't be a problem.

[AM]

What about a box with the buffer right after the input? I looked for something to link you to but I couldn't find anything so I took a bit of time to draw a rough sketch for you. In the mean time you posted some more and I realised that you also want an LED. In my diagram there is no LED but if you replace the DPDT switch with a 3PDT you can have an LED too. I personally wouldn't bother, but that's just me. If you wire the pcb board according to the "with no switching" diagram at page 3 of the GGG pdf and add the switch after the pcb it should give you a buffered signal which then you can send either to Output A or B.
Sorry for not drawing the diagram with a 3PDT but your second post wasn't there yet while I was drawing and I have to go to another computer to draw another diagram and it's not possible right now. Have a look here:
http://picasaweb.google.com/harm.on.x/Schematics/photo#5141651242869352658

[Dave Simpson]

Thanks AM!

That looks pretty simple, even for me.

I agree about the LED, it's not really needed. The signal is either going through the amp or not, no need for an LED to tell you that!  I really just wanted to have the LED to let me know if the mute is on or off when I first power up the pedalboard.

[AM]

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