Weights on top of equipment to dampen vibration

I was looking at mapleshade but it doesn't look like they are heavy enough for my needs I need 8-10 pounds

How about something like the HRS dampening plates on top of my transformers would this work just as well

I tried various weights on the transformers and what sounded best to me within this range

Rubber-coated three-pound handweights work very well!

Tvad
Maybe with brass cones I don't need such a heavy weight
I can look at the heavy hats or would something like Hrs plates

Any further opinions appreciated