What size spade connector for the MB-100 binding post?
The binding posts are metric and measure 8.65mm in outside diameter. Spades for this post should be 9mm. The wire whole is 6mm to accept very large (>10 AWG) speaker wire. If you want to use spade connectors use 9mm spades the brand we see most, in Thailand, is Van Den Hul see link… http://www.mayaudio.com/vandenhul/Connectors.html . Of course spades can be had from many other Mfgs. The post size in imperial dimensions is 0.341″ or about 11/32″ a more common size that would fit is 3/8″.