Chapter 3, Problem 3.97IP

Audio Speaker Resistance-Matching Network

A company is producing an interface network that they claim would result in an $R_{\text{IN}}$ of $600\Omega \pm 2\%$ and $R_{\text{OUT}}$ of $16,8,$ or $4\Omega \pm 2\%—$ depending on whether the connected speakers are 16, 8, or $4\Omega —$ selectable via a built-in switch. The design is shown in Figure P3-97. Prove or disprove their claim.