CES Ed-Lab 651.A Electronic Systems Lab
yes I have bananas
The Logic Lab just talked about did indeed use miniature banana jacks. In my quest for the elusive connector I wound up mistakenly buying a bunch of small full size banana plugs seen here. They weren't suitable.
I'm building some cables with miniature banana plugs right now. Actual Mini Bananas have a 3.05mm diameter vs. 4.3mm? diameter full size Bananas.