Putting weights on speakers?

I  put a pair of my 20lb PowerBlock  weight handles I use for working out, on top of my approximately 75lb  Opera loudspeakers.  

I put on a RL Zep II and heard a normally punchy, dynamic recording become somewhat wimpy. My speakers are sealed, spiked on suspended wood floor

The biggest regret of doing this now dumb experiment is I managed to put a ding on the otherwise nice Cherry finish removing one of the weights! I'm naturally an accident prone goofball.

Lesson learned- leave my damn system alone.

Amen

The only method to put some weigh on top of speakers is adding the load "incrementally" and listen in between each addition... Then we touch the optimal spot without degrading the sound....I was using myself some slab of around 10 pounds each and after some additions i experiment a dregradation or a stop in the increasing positive effects, i substract the last one and this was job done.....Almost all speakers will gain with this method....

If you put a definite amount of weigh in one shot without adding the weigh incrementally you will not know where is the optimal point....

There is a precise amount of load different for each speakers....

Overdamping can kill the dynamic and the clarity....But no damping most of the times dont gives to the speakers the card he will need to play at the top of his potential....

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.