[Regor]

So I'm trying to put in a push/pull pot into a guitar that only had 1 volume knob, and I have a schematic that will allow me to have an adjustable volume when pushed in, without a tone circuit; and a fixed full volume with an adjustable tone when pulled out.

I'm trying to get it pretty much the exact opposite of the circuit: adjustable volume with a tone circuit fixed on 10 when pushed in, and an adjustable tone knob without a volume circuit (vol on 10) when pulled out.

After 3 tries, I was able to get close to what I wanted. I got the volume when in, and the tone when pulled. But there's no tone circuit on 10 with the volume.

So I'm looking at the diagram from GuitarElectronics.com, and the more I look at it, the more I don't understand at all how the 'tone' path on that diagram works. I don't follow the signal path that makes it through the capacitor. Maybe I need to set it up to have the pot adjust both the tone and the volume at the same time?

Can someone who understands how these things work explain it to me? If you have AIM, you can IM me at regor5150.

Thanks,
~Roger

[Wiggywiggler]

Tried swapping the bottom and top rows (well pairs) of terminals around? Mening you connect the top row like the bottom row in the diagram and the bottom row like the top row in the diagram.

What it basically does as a volume control is it adds a resistor between hot and ground (less resistance, less signal as it's going to the ground, more resistance more signal) and as a tone control does it with the cap filtering some frequencies from getting to the ground. This means the cap goes between the signal and ground. Waheey.

How the push/pull bit works it connects the middle pair of terminals with the pair nearest to the shaft when the shaft is pulled up, and with the bottom pair as the shaft is pushed down. (on/on pot)

[darren]

Why do you want a "tone circuit on 10"? Isn't that roughly the same as bypassing the tone circuit altogether?

[Regor]

Originally Posted by darren

Why do you want a "tone circuit on 10"? Isn't that roughly the same as bypassing the tone circuit altogether?

Actually, it isn't. There's a VERY SLIGHT difference in the tone with a tone pot in the signal path, as opposed to not having one at all.

I'm trying to see how that affects my feedback issues with the Rhino guitar. I doubt it does, but to be honest, I realized it's the only guitar I have without a tone pot, so I decided to see the effect of it.

[Emiliano]

hi regor!
i posted a circuit very similar to what you need
and i repost here to you

with just one consideration

IMHO a pushpull switch doesn't have the right amount of poles
to give you exactly the

state1=> tone with vol on 10
state2=> volume with tone on 10

i tryied to figure it out but it seems that i'm missing just a pole

however my design allow you to

state1=> tone with vol on 10 ( just like you wanted )
state2=> volume without tone ( a bit more brighter )

and here it is!


always IMO
i think that the comparison would be useful if you still have
the older sound " without tone "

this way you'll have just an added feature
and no added work to do

I.E.
when i took out the tone pot just to try what effect would it have
i found myself not liking because of the added brightness

i had to rewrite some patches and change some eq ( long and boring times )

but then i started to like what i was hearing
( much more cut in the mix especially on clean sounds )

ATTENTION

i wrote " state1 and state2 " and not " push and pull "
because it depends how you do the wiring! so be careful!

hope you liek!

[Regor]

Originally Posted by Emiliano

state1=> tone with vol on 10 ( just like you wanted )
state2=> volume without tone ( a bit more brighter )

I actually found your diagram a few days ago, but it's not what I want actually. Your state1 is not what I wanted. I wanted a tone on 10, with adjustable volume. Not volume on 10.

Also, I tried just putting a 470k ohm resistor in serial like in your diagram, but it killed the strength of the signal, which isn't what I wanted to accomplish. I wanted to replicate the slight high end loss of having a tone pot in the circuit path. I'm still trying some things however.

[dpm]

Try a small value cap between hot and ground to emulate that loss, start at say, 47pF and work from there.

[Regor]

Originally Posted by dpm

Try a small value cap between hot and ground to emulate that loss, start at say, 47pF and work from there.

But just a straight cap would change the tone won't it? Like a tone knob on 0?

[scott from _actual time_]

Originally Posted by Regor

There's a VERY SLIGHT difference in the tone with a tone pot in the signal path, as opposed to not having one at all.
I'm trying to see how that affects my feedback issues with the Rhino guitar.

i had bad feedback problems with my Dean EVO7, after i removed the tone control to wire in dual volume knobs like a LP.

i ended up wiring together a tone cap, .022 uF, and a 500k resistor in parallel to simulate a 500k tone knob turned all the way up. i soldered one of those onto each vol knob, and that was a huge help in eliminating the uncontrolable feedback.

just like you, i doubted that it would be, since the tonal change w/o a tone knob is so subtle. but i had already repotted the pickups and crammed the mounting cavities with foam, so what the hell. i wired in the simulated tone controls, and the feedback went away.

Originally Posted by Regor

I wanted a tone on 10....I wanted to replicate the slight high end loss of having a tone pot in the circuit path.

then you want exactly what i did. just wire a tone cap and a resistor that's equal to your tone pot value, in parallel. connect one end of both to ground and the other end of both to hot. that's all you need--a non-adjustable tone control that's always on 10!

[Emiliano]

Originally Posted by Regor

I actually found your diagram a few days ago, but it's not what I want actually. Your state1 is not what I wanted. I wanted a tone on 10, with adjustable volume. Not volume on 10.

Also, I tried just putting a 470k ohm resistor in serial like in your diagram, but it killed the strength of the signal, which isn't what I wanted to accomplish. I wanted to replicate the slight high end loss of having a tone pot in the circuit path. I'm still trying some things however.

actually theres not a resistor in series.......
the resistor you see is in parallel with the pickup
to emulate a pot on ten ( i.e. the pickup see the full resistor )

i'll keep on thinkering, but i like the advice given a few post earlier

if you add a cap youll notice quite a bit of hi end to "roll out"
you can add a resistor in series with it to control this kind of effect
( this is what happens when you roll the tone pot! )

find the right cut changing cap value
and then
find how much you want to cut with a resistor in series

good luck!