12–36 Design an audio amplifier that amplifies signals from 2 to 10 kHz. Your approach should be to use a cascade connection of two first-order passive circuits separated by a noninverting OP AMP. The source has a 50-Ω series resistor, and the output of the filter feeds a 10-kΩ audio transducer. Design a bandpass circuit with the following specifications all ± 5%: fCL = 2 kHz, fCH =

10 kHz, B= 8 kHz. Passband gain + 40 dB. Use Multisim to validate your results. Even though Problems 12–35 and 12–36 share similar constructs, one cannot achieve the desired specifications in Problem 12–36. What is the reason for the problem?