I don’t remember where I originally picked up this little Motorola speaker, but I found it again while digging through a box of stuff and figured I could make use of it on the bench.
The model of the speaker is TSN1003A. I couldn’t find much info about it and I didn’t have a connector that would fit it, so I decided to hack it up and put my own connectors on it.
I took the speaker apart and traced out the connections.
In the end, I connected a 3.5mm audio plug and connected banana leads to the power cables, so I can just plug it into my bench power supply. It works pretty well for testing audio circuits.