Re: Looking For a Book on Basic Guitar Wiring
Both the volume circuit and the tone circuit are setup in parallel......as in the signal from your pickup can (and is) sent to either toward the output jack, or to the ground (which means no signal).
Volume - the signal has 2 paths. At 10, the resistance to ground is the designated full rating of the pot. Less resistance means more signal flows that way. It seems that in the guitar wiring, that it is the highs that travel down the ground path first. So a lower K rated pot will sound darker than a higher rated one.
Tone - This is a tuned circuit, with a cap and a pot. The value of each will determine what you get at '10'. Once again, with more resistance to ground, the higher rated pot will roll off the upper frequencies slower...and will tend to give brighter tone at 10. The cap determines the rolloff frequency and how quickly this happens.
Combination - as there is always some leakage, the way the tone circuit is attached to the volume pot matters.
Attached to the input of the vol pot there is a loading added to the signal (I think thats how it works anyhow). The result is a slight loss of highs. As you turn the volume down this gets worse, which makes the pickup darker as the volume is turned down - this is how the 'modern wiring' works.
If you attach the tone circuit to the output of the vol pot, it is somehow disconnected to the loading effect, and your tone regains some clarity. Also, as you wind your volume down the highs aren't sucked away like before. This is also called 50's wiring, as it was how the 50's Les Pauls were wired. The loading as you turn your tone down however tends to drop your volume a bit.
You can also swap the way that the volume pot works....as in the input is connected to the middle lug, and the output to the outer. This is particularly useful in 2 pickup guitars like Les Pauls if you use the middle position a lot, or on any guitar with out of phase switching. This mod makes the volume pots operate independently of each other....meaning in the middle position you can dial one pickup completely out without the whole signal of both going to ground.