1. The problem statement, all variables and given/known data A band Pass filter is given with the following configuration, R-Resistor, C-Capacitor: See Attatchment 1 - Circuit.jpg https://www.physicsforums.com/attachment.php?attachmentid=16241&stc=1&d=1225999965 R1 = R2 = 10 kΩ C1 and C2 are unknown Cut off Frequencies are: F1 = 180 Hz, F2 = 5500 Hz 2. Relevant equations 3. The attempt at a solution The transfer function derived is below: see Attatchment 2 - tf.jpg https://www.physicsforums.com/attachment.php?attachmentid=16242&stc=1&d=1225999965 I have been informed that it can be assumed that ([C2 x R2] / C1) can effectively = 0, due to the fact that at the centre frequency the circuit effectively becomes a voltage divider, and at this point the gain would equal 1. However I am unsure of how to derive the values of C from there, I have attempted to do make ([C2 x R2] / C1) = 0 and then put in values for omega, twice, once for each value of omega, and then tried using simultaneous equations to solve the c values, but with their being 2 values for omega I am getting stuck at a few points. Any help would be greatly appreciated, thanks.