Hi,

I'm wondering how far the actual layout is from the modded layout ?

I receive my overtone today and I want to tweak a little bit the Overdrive channel which is a bit aggressive to my ears and taste.

There a little "peak" in upper frequencies or something that I can't describe with word that make the OD sound a little too bright / aggressive.

Turn down the overdrive trim pot to around 09:00 o'clock - looking towards the powersupply from the input side. That'll do it

This is part of a post reply, regarding har to get a great Fenderlike clean sound and great dumblelike OD from the same knob/switch settings.......

I've experimented a lot with my Overtone to resolve this puzzle and have arrived at the following modifications to give me both good (sort of fender) clean sounds and at the same time nice rounded OD tones:

- a 47pf on the (input) volume
- change the bright cap to 47 pf
- a 39pf on the master volume
- increase the snubbers to 2 x 470pf (trims off OD harchness)
- add a 2nf+470k trimmer across the OD ratio (od master vol), which lets you reduce the OD treble (ditto)
- maybe add a 4,7M resistor and a 47nF capacitor to the input of the OD, just before the 220k (trims off a little bottom fuzziness)
And use the following settings with a strat or tele:
Volume 7, bright off, mid off, rock on, treble 5, mid 5, bass 5, gain level 7, ratio 5, master any, prec 6,

And the following with a Les Paul
Volume 4, bright on, mid off, rock on, treble 6, mid 5, bass 4, gain level 5, ratio 5, master any, prec 7,

As I've said, you'll get both excellent cleans and very nice OD
- off course you have to adjust some of the od treble off on the cap/trim mounting on OD ratio control
- If the bottom end of the sounds gets too fuzzy in OD mode, you might add the Gill Ayan mod to the OD channel, which is adding a 4,7M resistor and a 47nF capacitor to the input of the OD, just before the 220k.

I use either a single 1x12" Celestion 12G65 or a 2x12" Celestion both with oval hole in the back.

Just remember that John Mayer uses, Overdrive pedals as well as using a TwoRock;
- Boss Blues Drive
- Tube screamer
- etc.

Good luck

By the way, great clip with John Mayer

Sound is before everything in the fingers we all know that

Thanks my friend,
It was just ordinary pub gig

Very nice! Lovely tone and great playing.

Schematic re-posted as a JPEG.

I haven't posted much as my amp was being worked on, I thought it was broken but ended up being a bad tube in the power section. While it was there he said he could mod it a bit and I want to document those changes and put them up on the site to see what people have to say about them. I need a PDF of the layout as of say last February so I can edit it with the changes. Does anyone happen to have anything like that, or know where I can get one.  I am not so good with schematics or I would draw it out, so the layout is the only way I can do it.
Thanks to all, glad to be back
Burnie