Graphic EQ Gyrator frequencies

[Dirk_Hendrik]

Because I needed it anyway I made a small Excel sheet that calculates the values on which the frequency bands in a Ibanez GE-10 and a Boss GE7 (except for the 6.4 K lowpass)  filter. The circuit is based around a Cap and a small active subcircuit called a Gyrator that simulates an inductor. With the schematics of these EQ's on the side it should be pretty easy to see which component is the sheet is which one in the schematic so it can be applied to other EQ's around this principle as well. The "L" column is the simulated inductance.

may be handy to play around with so enjoy:
http://www.dirk-hendrik.com/gyrator_frequenties.xls