606 mods questions

[Budweiser [FTS]]

>This would come up right after I started moddin' my trusty 6-oh. Exactly
>which parts of the Mixmag (?) modification article were wrong? I'm quite
>good at following the directions, but not, however, at spotting what might
>be wrong with a circuit's design.
>



The capacitors in the main bass drum schematic should be 68nF, not 82.
To turn the low tom into a 909 kick, place 68nF capacitors in parallel with
C304 and C305 (on toms board). Use a BC548 transistor for the pitch sweep
trigger on the main bass drum. The pots used for the sweep decay, sweep
amount and pitch control are too big. Use 10k pots instead.

Experiment with your own values to get something you like. Also, for the
hihat filter pot, once you have added this mod, the hihats clip the internal
mixer. It says to change R189 from 47k to 22k, but i think it should be
about
12k, because it still clips.

Hope this helps.....

<bUd>