I've been doing some mods for the Boss Blues Driver. I currently own 2 and have done one other for somebody else. He seemed to like. Anyway, I thought I'd share some info with yall, in case you would like your BD-2 to sound a bit different. Use metal film caps if you can. They work best.
C36, C17 I change to a .01 cap
C35 Change to .047
C8 Change to .22
C9 Remove the cap altogether.
C34 Change to .1
These mods will warm up the pedal a bit. Make it rounder, more balanced.
C14 Is the bass input for the pedal. More bass by changing it to .1. I generally don't like to go higher than .1, I think after that the sound just gets a bit muddy. .22 might be okay, whatever your preference.
C19 you can either take out or replace with a .004 cap (a pretty small value). I like more midrange, so I take it out. If you like it a bit clearer and bassier, use the .004.
C100 I have a lot of fun with. You can get the sound of the Keeley PHAT mode with a .1 cap at the tone control. More bass, more low-mids for a fatter sound-I actually think it cuts through a mix better too. You can go as high as .22 (I have, and I like it in one of mine) or as low as .033. I think any less than that sounds rather thin. I'm using a .22 in one and a .1 + .22 in series in the other for a total capacitance of .069.
D7 add a silicon 1n4001 diode for more 2nd order harmonics
D10 throw in a 5mm LED for a spongier response, or 3mm LED for a bit more gain
D3 another silicon 1n4001...4002...4003 diode will make your pedal a bit crisper and tighter. The silicon diodes also seem to make the pedal respond a little better.
At last, I replaced 6 electrolytic caps at C1, C6, C7, C12, C13, and C15 with 6 10uf tantalum capacitors. This added to the warmth and balance and smoothed it out a bit.
Enjoy.
C36, C17 I change to a .01 cap
C35 Change to .047
C8 Change to .22
C9 Remove the cap altogether.
C34 Change to .1
These mods will warm up the pedal a bit. Make it rounder, more balanced.
C14 Is the bass input for the pedal. More bass by changing it to .1. I generally don't like to go higher than .1, I think after that the sound just gets a bit muddy. .22 might be okay, whatever your preference.
C19 you can either take out or replace with a .004 cap (a pretty small value). I like more midrange, so I take it out. If you like it a bit clearer and bassier, use the .004.
C100 I have a lot of fun with. You can get the sound of the Keeley PHAT mode with a .1 cap at the tone control. More bass, more low-mids for a fatter sound-I actually think it cuts through a mix better too. You can go as high as .22 (I have, and I like it in one of mine) or as low as .033. I think any less than that sounds rather thin. I'm using a .22 in one and a .1 + .22 in series in the other for a total capacitance of .069.
D7 add a silicon 1n4001 diode for more 2nd order harmonics
D10 throw in a 5mm LED for a spongier response, or 3mm LED for a bit more gain
D3 another silicon 1n4001...4002...4003 diode will make your pedal a bit crisper and tighter. The silicon diodes also seem to make the pedal respond a little better.
At last, I replaced 6 electrolytic caps at C1, C6, C7, C12, C13, and C15 with 6 10uf tantalum capacitors. This added to the warmth and balance and smoothed it out a bit.
Enjoy.
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