Op-Amp Filters
The following op-amp filters were developed by Rick Andersen for the Theatre
Organ. They should be direct replacements, but note: the LM358 op-amp
requires a dual power supply. Pin 8 requires a voltage of approximately
+10 to +15 volts, while pin 4 requires an equal but negative voltage of
-10 to -15 volts.
Filter #4: Tuba
Mirabilis 16'
Filter #10: Oboe
8'
Filter #12: Brass
Trumpet 8'
Filter #15: Tromba
Clarion 4'
(More to come ... I hope)
