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How I made my Dirtbag sound much better

Started by gitaar0, July 12, 2013, 01:58:15 PM

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gitaar0

I finished my Dirtbag a long time ago and while I was working on a ABDX I was wondering if the darker repeats on this Dirtbag were not darker then necessary.
One of the suggestions Scrufie gave me while working on the ABDX was to be sure that the voltage on the output of the compander is half the powersupply at pin 13. That helped a lot or the ABDX's headroom.

I checked the voltages on the compander of the Dirtbag and they were quit a bit of. So I changed r11/r12 fom the recommended 68k to 47k  to get half the supply voltage and I also changed r42 to 10k.
That gave me already a better tone.

Then I fiddled with c14/c22 as Brian had suggested in another thread to change the filtering. Lowering C14 introduced too much noise for me but changing C22 to 22n works very well.
Now the Dirtbag sounds much clearer.
Worth trying.

GhostofJohnToad


Scruffie

At Pin 13? That's power.

Half Supply at Pins 7 & 10 is what you want to aim for for the most headroom.
Works at Lectric-FX

gitaar0

#3
Quote from: Scruffie on July 12, 2013, 02:35:51 PM
At Pin 13? That's power.

Half Supply at Pins 7 & 10 is what you want to aim for for the most headroom.

That is what I meant. I understand it might read different...  ;)
Half the power at pin 7 & 10 of the power supply at pin 13...

BBD's are MN3005 and running at 15 volt with a roadrage.

gitaar0

#4
What i notice now is that on loud notes I have a plop sound in the low end.
As if too much low end is now coming through.
Changing c22 is mostly effecting the highs I thought or did i see that wrong?