Guru
Joined: 24/12/2017
Location: AustraliaPosts: 1619
| Posted: 01:04am 15 Mar 2023 |
A volume control pot normally goes before the amplifier. See this for an example.
Putting it between the amplifier and the speaker would have the amplifier operating at full power continuously and the volume control pot would have to handle the full power output of the amplifier. Not good.
I would ground the spare input via a 10k resistor.
Bill