Listening

I enjoyed reading this post admiring your expertise. I have a very simple question about these speakers. I inherited the pair of speakers from my father and am very fond of them. However, the space I have available is very limited. Do you think I could place the Yamaha HS8 I use for audio editing and production on top of these speakers, or could I ruin them? They weigh approximately 22.5 lb (10.2 kg) each. Thanks for any feedback!