Boss sd1 problem

[bentium]

hi all,

i got a boss sd1, but i has developed a problem lately: the clean sound bleeds into the overdrive sound

how to fix it?

[shredgd]

Hi,

if you meant the effected ssound is bleeding into the clean sound, the final solution (it works 100%) a clever guy came across is here:

http://forum.musikding.de/attachements/Boss_SD-1_mod_c.gif

(It's basically a layout problem of the pedal, so this solution involves adding a few extra components to reduce the gain of the overdrive to 1 when the effect is bypassed, so that anything bleeding through is not distorted)

However, if you reallly meant the clean sound is bleeding through, then it might be a jfet failure (there are 2 jfets in the switching section of the pedal - as in any boss pedal - which let the clean or the overdriven sound pass through them, basing on your footswitch "stomping").

Hope this helps,

Giulio

[bentium]

when i play with the pedal activated, i get some clean sound coming through it, mixed in with the distorted sound

[MartyMart]

That's a function of the SD-1 and TS-9 type circuits and is part of what makes them so popular
The way the opamp is setup, a fairly pure guitar signal is kept throughout along with the overdriven
signal - it's NOT a fault !!
The sparkle drive addresses this, which has a pot included for "clean blend"
For a fully distorted signal try a different circuit such as the mxr Distortion + there's lots of others
too.

MM.

[bentium]

it's different then that

i have this pedal for a few months now, liked the sound realy alot

but now i get more of the clean sound through it, it's like you use a blend-fx that blends the clean sound with the overdrive sound and set at 50%

[blustrat]

Hello, i think this trhead can be helpful
http://www.diystompboxes.com/smfforum/index.php?topic=41582.0
Bye