Buffers/Splitting Question

[seten]

I have a flying pan (one input two outputs) that I'm modding with blends so i can control the depth of the panning - for the left channel Im using the standard two transistor split n blend http://tagboardeffects.blogspot.com/2012/02/split-n-blend.html?m=1

and for the right channel since I'm getting the flying pan input from the first split n blend, I figured I'd only need this guy: http://tagboardeffects.blogspot.com/2012/01/mini-blend-jfet.html?m=1

So for the split n blend the input is my guitar signal, send goes to flying pan in, return is flying pan left out, and out goes to the actual left out jack for the mini jfet blend the input is guitar signal, return is flying pan right out, out goes to actual right out jack.

Is this proper buffering? It feels weird because my guitar is being daisy chained to two places. I think its right though because theres three signal paths and three transistors means three buffers (right?).

[seten]

bump?

[analogMensch]

If I figured out that right...

On the Split'n'Blend the input goes through the first buffer stage (left transistor) to the send. It also goes through the second buffer stage (right transistor) to the blend pot (grey wire).

On the Mini Blend you don't have the first stage with the the buffer for the Flying Pan, cause you you still get this from the Split'n'Blend. So you only have the second stage which buffers your input to the blend pot.

So for that part you are totally fine!



The only thing I would change are input and output capacitors on one of the circuits. If you use the same transistors for both circuits, you also should use the same capacitor values. Otherwise you could have different frequencies on the outputs.
You also can left out the 10nF input capacitor on the Mini Blend and connect the gate of the Mini Blend (fourth trance from top) directly to the gates of the Split'n'Blend (third trace from top).



The easiest option would be to add a third transistor, a third output capacitor and a thirtd 4.7kΩ resistor to the Split'n'Blend.

[Mark Hammer]

Are you using the stock Flying Pan circuit?  If so then I think the simplest solution is just to change the value of the 1M resistor feeding the gate of the two FETs in the panning section.  Given how difficult it can be to get pots greater than 1M, I suppose this would call for either a rotary switch or at least a 3-way on-off-on DPDT toggle to get mild, medium, and strong panning by changing the value of that gate resistance.

Whatever way you try to accomplish it, you're right to want to reduce the intensity of the panning. That aspect of the Flying Pan may have made it seem "groovy and psychedelic" on paper, but in practice it was annoying and the sort of thing one would simply not leave on for more than a few moments.  The idea of panning was fine, but the inability to reduce the extent of panning and gentle it a bit probably killed the pedal's market potential.  A perfect example of less being more....or perhaps more being less.

[seten]

Okay thanks yall! I'm having some trouble with the blend circuits so I'll mess around with changing that resistor.

[R.G.]

Re: blending circuits. Try reading "Panning for Fun" at geofex.com