Dual Inductor Mod?

[jollyjek]

Hi, I have a stock crybaby that I want to mod.  I want to be able to switch between a yellow fasel and a halo inductor of some sorts, how would i do that?  Does the fact that the fasel inductor have only two legs make any difference with the halo that has four? and what type of switch would i need? thanks.

[John Lyons]

Most inductors have only two connections, the other legs are just for mounting.
Take a look here for the inductor modifications.
http://www.generalguitargadgets.com/projects/27-wah-wah/53-mod-able-wah-wah

[jollyjek]

okay, so how would i know which legs are for mounting and which ones actually connect on the circuit?

[Govmnt_Lacky]

okay, so how would i know which legs are for mounting and which ones actually connect on the circuit?

Read between 2 of the posts on the Halo with a DMM. Two of the legs will read a small amount of resistance (~20-100 ohms) and the others will not. Those two are your winners!

[jollyjek]

awesome.  so i would just use a dpdt if i dont want to get that specialized pcb i presume?

[Govmnt_Lacky]

awesome.  so i would just use a dpdt if i dont want to get that specialized pcb i presume?

Yes.... you could but, good luck hanging 2 inductors from a DPDT 

[jasperoosthoek]

Yes.... you could but, good luck hanging 2 inductors from a DPDT 

Why is that?

The switchable wah mod from GGG also has the ability to connect both inductors in series. Therefore a big 3p3t switch is needed. If all you need is to switch between two inductors you keep both sides connected to the 4.7uF cap and select the other side with a SPDT switch. Or you can use a DPDT switch and switch between both poles.

[SISKO]

Yes.... you could but, good luck hanging 2 inductors from a DPDT  

Why is that?

The switchable wah mod from GGG also has the ability to connect both inductors in series. Therefore a big 3p3t switch is needed. If all you need is to switch between two inductors you keep both sides connected to the 4.7uF cap and select the other side with a SPDT switch. Or you can use a DPDT switch and switch between both poles.

Right, but the wah mod from GGG already includes the holes to mount two inductors on the same pcb. As I understand, he just wants to solder them directly to the dpdt and that may be a pain in the a** because the leads distance of the dpdt is not the same as the lead distance of the inductor. And while moving the wah from here to there, it could desolder since indcutors are not as light as resistors or capacitors

-You could, however, have a small daughter board with the two indcutors soldered, screwed to the case.

[R.G.]

There is a minority opinion that says that it would be interesting to just sub out one for the other and see if there is any noticeable sound difference before going to all the trouble of mounting the two, drilling a hole for the switch, etc., and then finding out it doesn't make much difference, or that one is so superior that you'd never use the other one.

Just a thought.

[Govmnt_Lacky]

There is a minority opinion that says that it would be interesting to just sub out one for the other and see if there is any noticeable sound difference before going to all the trouble of mounting the two, drilling a hole for the switch, etc., and then finding out it doesn't make much difference, or that one is so superior that you'd never use the other one.

Just a thought.

+1. I actually etched and built the "dual inductor" circuit from GGG and it does indeed work flawlessly however, I used a Red and Yellow Fasel for each and my NON-GOLDEN EARS cannot tell that much of a difference between the two.

Then again.... I may be tone deaf as it is 

[MikeH]

There is a minority opinion that says that it would be interesting to just sub out one for the other and see if there is any noticeable sound difference before going to all the trouble of mounting the two, drilling a hole for the switch, etc., and then finding out it doesn't make much difference, or that one is so superior that you'd never use the other one.

Just a thought.

+1. I actually etched and built the "dual inductor" circuit from GGG and it does indeed work flawlessly however, I used a Red and Yellow Fasel for each and my NON-GOLDEN EARS cannot tell that much of a difference between the two.

Then again.... I may be tone deaf as it is 

I put a switch in my wah to switch between red and yellow too I just used a small piece of strip board to mount the fasels), and you are correct; there isn't much of a difference.  The yellow breaks up a tad more than the red, but not much at all.  Although I imagine the difference between some non-fasel inductors might be more noticeable.

[fretzburner]

Tried the red and yellow fasels too and not a big difference switching between the two.Finally i removed the yellow one to simplify the circuit and to get rid of the wires for the switch.

[Talon5051]

I also did the GGG modable wah pedal and cannot tell the difference between the 2 inductors but the 2 in series does make a difference.