I started with the base and a piece of aluminum angle to mount a few speaker terminals and the resistors...
The terminals work well since the banana to BNC cables to the oscilloscope and the speaker wires can be mounted simultaneously...
I added a 12VDC plug too so to power two small Sunon fans
btw, they're actually running in this picture!
They have what Sunon calls "Vapo" bearings. The fans were mounted using small SS pin nails cut and polished and pressed into holes drilled in the aluminum:
I made the small cable clamp from an aluminum gutter outlet:
I found out that my old security camera wall-wart fits the plug too:
Here's a shot through the fins. I do feel a good breeze on the opposite side:
And since there is still plenty of space on the base of the heat sink, and I have an extra pair of speaker binding posts, I may add one 4 ohm 100 Watt Caddock Thick-film TO-247 resistor and hang it off of the back?
Anyway, I haven't much time since I work construction this time of year, I wanted to fit this in and be ready for the Fall electronics projects!