Newbie help - audio amplifier (BA5415A)

[Ballistical935]

I managed to salvage a ba5415a IC and I'm trying to turn it into an audio amplifier (mono) and I'm struggling to decipher the circuit

 

[Audioguru]

Your circuit is wrong because the second amplifier has no input signal. The circuit in the datasheet applies the feedback signal of the first amplifier to the pin 9 inverting input of the second amplifier so the speaker gets a bridged output.