Here is the op-amp circuit, which is found in this datasheet on page 5:
I have boxed, in red, the part of the circuit that I am confused about. What is the point of having this? Thanks in advance.
Answer
It is a Zobel network also known as Boucherot cell, meant to stablize the amplifier when no load (speaker) is attached. It compensates the increasing speaker impedance at higher frequencies and prevents high frequency oscillation.
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