Putting weights on speakers?

You would be much better off putting something extremely hard and pointy 🔝 on top of the speakers, you know, like the Totem Beaks, or even better Super DH Cones. For the more adventurous my large size crystal pack works wonders. The idea is to give the stored energy In the speaker cabinet an EXIT point. The energy will tend to go where the hardest material is, the path of least resistance is where the atoms ⚛️  are the most tightly bound. A pathway outta here! 🔝 The same idea applies to tube traps, makes them operate more efficiently. Yeah, baby! 🤗

If you really believe that it is beneficial to put something heavy on top of the speakers and your wife understandably dislikes the look of weights, try finding a pair of something decorative, like marble or granite vases or large crystal balls.

Another approach is DIY some Helmholtz resonators of the correct dimensions and nozzle geometry and put them on top of the speakers as there’s a surprising amount of energy directed upwards from the speakers. 🔝

Uh oh...I sense a project coming on...I have DYI cinder blocks as speaker stands. What if I add more cinder blocks to surround the sides and rear of my speakers?

https://systems.audiogon.com/systems/8722#&gid=1&pid=1

And add a concrete slab across the top, of course.