no, they won't work at all...the 20.0 has a 3/8 16 thread and the 10.0 has a 1/4 20 thread, I wish the 20.0 had a 1/4 20 thread so I could feel more secure about putting my speakers on them. I understand that the 10.0 are really able to handle higher weights but are given a conservative weight tolerance. I am going to put them on and hopefully it all goes well and I can feel more confident about having them on the 10.0 omnimounts. I am jonesing for Apocalypse Now Redux!