This is my solution to an exercise 1.24 from The Art of Electronics.
(Build a twostage bandpass RC filter with the first stage is a highpass with a breakpoint of 100 Hz, and the second stage is lowpass with a breakpoints of 01 kHz. Assume the input signal source has an inmedance of 100Ohm.)
Try adjusting a 1kHz source below and above the filtering range and observe the Voltmeter's reading.