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KZ Percussion

PERCUSSION TREBLE BOOST AND PERCUSSION VOLUME LEVEL BOOST:

Remove the C208 0.01uF percussion treble cut grounding capacitor that is wired between the collector of the Q201 transistor and the ground in order to produce a brighter sounding percussion effect with more key click spittiness.

I have installed a switch in my 1963 L102 that switches the C208 on or off  in order to get either the stock mellow sounding percussion effect or the brighter, more spitty sounding percussion effect.

Remove the R223 100k grounding resistor and short out the C213 capacitor and short out the R222 270k resistor and short out the R226 180k resistor in order to get a fatter and louder and brighter sounding percussion effect.

The percussion volume level boost is needed so that the louder percussion volume levels will be better matched with the main organ signal volume level boost modification described previously.

 

WHAT TO DO:

  • Remove the C208 percussion treble cut grounding capacitor.
  • You can install a SPDT switch that switches the C208 on or off in order to get either the stock mellow sounding percussion effect or the brighter, more spitty sounding percussion effect.
  • Remove the R223 grounding resistor and short out the C213 capacitor and short out the R222 resistor and short out the R226 resistor in order to get a fatter and louder and brighter sounding percussion effect.
  • The percussion volume level boost is needed so that the louder percussion volume levels will be better matched with the main organ signal volume level boost modification described further below.