Don, I was going to go back and find your post about using water heater elements and cut and paste it here. How did that work out for you? I think about it every time I walk past the plumbing section.
I'll probably eventually try something similar. I just don't yet have the knowledge or time to do so.
The heaters are slightly less than 8 ohms. The cables have dual banana jacks on the other end. For 4 ohm testing, 2 cables are plugged in to each channel. Zoom in on the photo and you’ll see the area that melted.