Diagram 1: common to tone; Diagram 2: common to volume. Why?

[reluctant-builder]

Diagram 1: http://www.seymourduncan.com/support/wiring-diagrams/schematics.php?schematic=2h_1v_1t_3w_1pp

Diagram 2: http://www.seymourduncan.com/support/wiring-diagrams/schematics.php?schematic=2_prails_1v_1t_3w_mini

The first diagram has the common connected from the pup toggle to a lug on the tone pot, which is then bridged to the volume pot.

The second diagram has the common connecting to the volume pot, bridged to the tone ... which makes it look like the signal goes to the volume pot, to the tone pot, back to the volume pot and out to the jack.

The first makes a lot more sense to me ... common to tone to volume to jack. Seems more straight forward.

So, what is the difference? And for what purpose to they differ?

Thanks.

 

[Jumble Jumble]

The two are electrically identical. If two things are connected together, it doesn't matter where.

 

[line6man]

There is absolutely no difference in the way grounding schemes are configured. The physics are highly insignificant in this application. Lots of people like to freak out about the possibility of ground loops, the resistance of the wire, etc., but at the end of the day, you have one ground, with connections all running a low impedance path approaching zero Ohms. You can do things however it is easiest to solder up.

 

[Jumble Jumble]

That's all true, but this isn't a question about grounding.

 

[drewfx]

Though they are identical, as a practice I like to consider points of failure and would route from the switch to the volume - as that way you will still get output if the little wire between the V and T comes loose for some reason.

 

[reluctant-builder]

Though they are identical, as a practice I like to consider points of failure and would route from the switch to the volume - as that way you will still get output if the little wire between the V and T comes loose for some reason.

That's a nifty idea; I like your style. Allotting for contingency.

 

[Jumble Jumble]

Hehe, I guess so. But to be honest, one wire's as likely to come loose as another and so I usually just solder to wherever makes things neatest.

 

[JCizzle]

I just learned this the hard way with my build. It works, but it kind of looks like Ray Charles soldered it. My next one will be much neater and cleaner.  :laughing3: