How to connect an old amplifier to an old speaker?

First, see if the power of the power amplifier matches the power of the speaker, then connect the power amplifier and the speaker with the speaker cable, and pay attention to the wrong connection of the positive and negative poles. Except for the audio system with decoding technology, there is no revolutionary change in the technology of power amplifier and speaker, so the connection between power amplifier and speaker is the same whether it is old or new.