Buckingham, that was a valiant attempt at artwork and being helpful. Glad to see that i'm not the only "scribbler" out there : )
I agree with Maxgain about this still not clearly showing what we are talking about. One would almost need a color coded drawing to fully clarify things.
The easiest way that i can think to explain this is to use a double barrelled shotgun as an example. Think of a double barrelled "side by side" shotgun ( not an "over and under ) design. You have your right barrel ( call this the positive wire ) and the left barrel ( the negative ). Instead of having the two barrels used individually for each polarity ( + and - ), they are tied together at each end. In effect, you know have one barrel that is twice as big. Since you only have one conductor to "shoot" the signal from the amp to the speaker ( we'll call this one positive ), you now need an identical yet seperate "shotgun" ( cable ) to make up the necessary negative lead. In effect, you now have four smaller wires acting as two bigger wires.
While a similar effect can be achieved in a multi strand or "internal bi-wire" cable due to the plethora of smaller wires in one bigger jacket , the main difference in "shotgunning" is that each polarity ( + & - ) are completely seperated from each other within their own jackets. They also have an air gap between the two polarities.
That large air gap is what increases the inductance of the cable. The closer the cables are brought together, the lower the inductance would be. That is why cables like Goertz, which are flat strips of copper or aluminum sandwiched as close together as possible, are very high in capacitance and very low in inductance. Zip cord is higher in inductance because of the bigger gap / thicker insulator between the two polarities. Sean
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I agree with Maxgain about this still not clearly showing what we are talking about. One would almost need a color coded drawing to fully clarify things.
The easiest way that i can think to explain this is to use a double barrelled shotgun as an example. Think of a double barrelled "side by side" shotgun ( not an "over and under ) design. You have your right barrel ( call this the positive wire ) and the left barrel ( the negative ). Instead of having the two barrels used individually for each polarity ( + and - ), they are tied together at each end. In effect, you know have one barrel that is twice as big. Since you only have one conductor to "shoot" the signal from the amp to the speaker ( we'll call this one positive ), you now need an identical yet seperate "shotgun" ( cable ) to make up the necessary negative lead. In effect, you now have four smaller wires acting as two bigger wires.
While a similar effect can be achieved in a multi strand or "internal bi-wire" cable due to the plethora of smaller wires in one bigger jacket , the main difference in "shotgunning" is that each polarity ( + & - ) are completely seperated from each other within their own jackets. They also have an air gap between the two polarities.
That large air gap is what increases the inductance of the cable. The closer the cables are brought together, the lower the inductance would be. That is why cables like Goertz, which are flat strips of copper or aluminum sandwiched as close together as possible, are very high in capacitance and very low in inductance. Zip cord is higher in inductance because of the bigger gap / thicker insulator between the two polarities. Sean
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