Twin T Band Pass Filter Calculator

Enter Desired Center Frequency (Hz):
Enter Desired Q:
Select Resistor Sequence:
Select Capacitor Sequence:
Select Resistor Scale (Ohms):
  
Co (pF)Ro (Ohms)
Rq low (Ohms)Rq high (Ohms)

Enter the Center Frequency and click "Calculate" There will be a sharp peak somewhere near your selected center frequency - although component tolerance may put it off a bit.

I've also added two resistors that allow some control over the Q and gain. Don't vary the Q much from 10 - over a range of 0 to 30 you have some control, but it is not entirely linear or predictable.