Mad Professor - Little Green Wonder

guycapuano · Post by **guycapuano** » 25 Jan 2012, 04:36

So we have a verified vero layout?

sammy · Post by **sammy** » 03 Feb 2012, 19:02

Here is a vero layout.
It's my first one, I hope you like it.

I build it yesterday, but it was so late that I could only check it very short, but seemed okay.

Sammy

guycapuano · Post by **guycapuano** » 03 Feb 2012, 19:35

Hey Sammy, why not use a double gang pot for the tone knob?

Seiche · Post by **Seiche** » 03 Feb 2012, 20:04

sammy, that resistor under the IC could get a bit tight even if you use a socket, so you would've to mount it to the copper side.

sammy · Post by **sammy** » 04 Feb 2012, 09:46

guycapuano wrote:Hey Sammy, why not use a double gang pot for the tone knob?

Hi,

I used a stereo pot, but didn't know how to draw that in the vero layout.

Sammy

sammy · Post by **sammy** » 04 Feb 2012, 09:48

Seiche wrote:sammy, that resistor under the IC could get a bit tight even if you use a socket, so you would've to mount it to the copper side.

yes, mounting it on the copper side is easier. I used a socket and it works, not the best way, but it works.

Sammy

box · Post by **box** » 04 Feb 2012, 12:49

Hi,
like this board much easy

Regards,
box

Geosh · Post by **Geosh** » 06 Feb 2012, 19:03

box wrote:Hi,
like this board much easy
Regards,
box

I'll take 1 please

box · Post by **box** » 06 Feb 2012, 20:10

Geosh wrote:
box wrote:Hi,
like this board much easy
Regards,
box
I'll take 1 please

Hi,
my friend he did for me (I guess he make a joke -Photoshop)

Regards,
box

ichilton · Post by **ichilton** » 20 Jun 2013, 09:53

Hi,

I built one of these using Ivlark's vero layout and I really like it, but it's a bit top-endy.

I'm a bit fixed as to where I have the body knob, as if I turn it back from noon, it goes very raspy/raunchy, so I need to take it to the right, but can't go too far as it gets top-end'y.

I've already got the Treble on my amp (JCM 800 2x12 combo) down to 9-o-clock and the presence all the way off as I prefer the the bridge pickup (hb) on my Ibanez S470.

Is it possible to mod it to remove some top end without making it too muddy or muffled?

Thanks,

Ian

Dingleberry · Post by **Dingleberry** » 08 Apr 2016, 09:32

I've been wanting to have a little more precise control over the tonal palette of this pedal so I came up with this idea.
I haven't tried this yet personally in practice but it functions electrically just the same as using the dual 20KB pot, it just has two individual controls for tuning mid- and treble response separately.
All the same sounds are of course available just as in original LGW + a lot more.
I didn't do any calculations which curve A/B/C will give the best control over the entire rotation range of the new Treble pot, but any 5k pot will work.
That of course also depends on how do you want to wire it; to cut or to boost.
I hope I have time to mod my LGW personally this weekend.
Feel free to experiment!

Cub · Post by **Cub** » 16 Jan 2020, 09:49

Old thread, new question. I'm thinking about modifying a TS type of pedal by giving it the tone control from the LGW. If I were to implement a tone control like this - dual ganged pot on two passive RC filters - would it matter if the wipers of the pot weren't connected to ground as they are in the original, but to Vbias instead ?

I'm looking at the LGW schematic attached to this post.
viewtopic.php?f=7&t=851&hilit=lgw&start=80#p153804

deltafred · Post by **deltafred** » 16 Jan 2020, 15:01

Cub wrote:would it matter if the wipers of the pot weren't connected to ground as they are in the original, but to Vbias instead ?

It should work exactly the same as the tone pots are AC coupled (they have a capacitor in series with them so there will be no DC).

I say should because there is always the possibility that it might interact with something else, it shouldn't but it just might!

Cub · Post by **Cub** » 16 Jan 2020, 17:13

Thanks Delta!