Installing PUPS: Question

[eonblue]

Ok, I am about to try installing new pups for the first time. I found the proper pickup schematic for my guitar at this link:

http://www.seymourduncan.com/support/schematics/2hb_1vol_1tone_3way.html

Alright, here is the question. When looking at the wiring configuration on my guitar I noticed one big difference. If you look at the seymour duncan schematic there is a connection between the volume and tone pots with a green box in between. On MY GUITAR, it is wired differently. There is a wire running from the a lead on the volume pot to the middle lead on the tone pot. AND THEN, there is a green box connected to the third lead on the tone pot which is then grounded on the top of the same tone pot.


1. What is the green box thing.

2. Are these configurations effectively the same?


Thanks


Ohh yeah, another question, are all the leads on the pots the same or do they each have different functions?

 

[ColdHit]

Re: Installing PUPS: Question

You mean like this? http://guitarelectronics.zoovy.com/product/WDUHH3T1101

It should work the same. BTW, the Green thing is the capacitor for the Tone pot.

 

[eonblue]

Re: Installing PUPS: Question

Thanks a lot.

 

[waylay00]

Re: Installing PUPS: Question

Yeah, I've always wondered the same thing. Like how could it be the same if the capacitor is soldered to ground in one schematic, but in the other, it is soldered to the input lug of the volume pot?

 

[Funky P]

Re: Installing PUPS: Question

Yeah, I've always wondered the same thing. Like how could it be the same if the capacitor is soldered to ground in one schematic, but in the other, it is soldered to the input lug of the volume pot?

One is before the pot and one is after the pot, but essentially the signal all goes through the same method.

 

[eonblue]

Re: Installing PUPS: Question

Does anyone know if the leads on the pots have different functions or are they all the same?

 

[ColdHit]

Re: Installing PUPS: Question

http://www.stewmac.com/freeinfo/I-4000.html

Go here to Pag 3 and 4 which explains how a pot works. Hope it helps.

 

[eonblue]

Re: Installing PUPS: Question

Excellent article, thanks. It didnt really explain how a tone pot worked in comparison. Lemme take a guess at it. The third lug on the tone pot is connected to a capacitor which works to block certain frequencies. The first pot is grounded. And the signal is run to the second(sweeping) lug which dictates how much signal is directed through the capacitor and therefore how much frequency is blocked inside the capacitors range???? Way off?

thanks

 

[eonblue]

Re: Installing PUPS: Question

Ohh yeah, and how much does good tone and volume pots affect tone quality. The article seemed to state that they were relatively simple devices.

 

[MikeS]

Re: Installing PUPS: Question

CTS brand pots are fairly standard upgrades these days if axes don't already have them. I'm not sure that you'd hear much (if any) tonal difference, but CTS brand pots do tend to be a bit more reliable. I've burned up a few cheap pots in the past, but have never had issues with CTS brand pots.

As for the wiring question, the value of the capacitor has a far great impact on tone (amount of rolloff) than whether it is in front of or behind the tone pot. If you are only installing new pups without upgrading pots, I'd just leave it be.