Summary

I picked up a Sony STR-KS2000 Multi Channel AV Receiver at the thrift store and needed some plugs for my speakers.

Simple design, could use improvement like screw holes to tighten the wires in and a tapered transition between the larger and smaller parts of the wire holes. The OpenScad file is included for the adventurous.

I used them by shoving the speaker wires in the larger top holes and poking a little bare wire out the small bottom holes.