12–35 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 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 = 20 Hz, fCH = 20 kHz, B= 19,980 Hz.

Passband gain + 40 dB. What is the minimum GBW of the OP AMP that can be used in this application? Use Multisim to validate your results.