Morley Distortion Mod

[halorune]

Hi All

I have a new Morley Distortion/Wah/Volume and like many others out there find the distortion terrible, especially with single coils. It's a very flabby overdrive with waaaay too much low end in it.

Here is a link to the schematic from the morley webpage.

http://www.morleypedals.com/pdw-iies.pdf

I see it uses 1N4148 diodes. Anyone know if I can swap these out or add more for a more distortion type sound ala Boss DS type? Also, can I put a high pass filter in it to tame the lumpy bottom end?

This would be a great little all in one emergency pedal if the distortion wasn't so bad. Any help would be appreciated.

[MartyMart]

OK from a quick look see :

C 13 0.1uf poly change to a 0.047uf poly, less low end in the distortion
C 22 1uf 50v electro change to a 0.1uf poly cap should give you less
bass output ( when using distortion )

D3 one of the 1N4148's change to a 1N4001 power diode
less compressed "farty crunch" to a more assymetrical crunch and
a bit more gain.

Marty.

[halorune]

Thanks Marty

I will get adventurous and try out your suggestions.  May be the beginning of a long a twisted obsession with diode swapping.

Anyone else have some suggestions?

[Yun]

To get rid of the "way to much low end" change the input cap (C 24) to .001

After doing that, you'll notice a huge difference, man. 

What's the stock distortion pot's rating eh?  25K i think?  Change it to 50K-1Meg .  for more distortion....