Design an audio amplifier that amplifies signals from 20 Hz to 20 kHz. Your approach should be to use a cascade connection of two first-order active OP AMP circuits. The source has a 50-V series resistor and the output of the filter feeds a 10-kV audio transducer. Design a bandpass circuit with the following specifications all  5%: fCL ¼ 20 Hz, fCH ¼

20 kHz, B ¼ 19980 Hz. Passband gain should be adjustable

(use a potentiometer) from 0dB to +40 dB. Use OrCAD to validate your results.