Putting weights on speakers?


IME, putting 20 lb ankle weights on my 150 lb speakers greatly tightened and improved the bass and sound overall. Only problem is that the wife hates it... 
mglik
I put 75 pounds of concrete on top of my Mission Cyrus 30 pounds speakers....With great success....

My wife dont have access to my audio room and dont want to either.... :)
I'd be interested to know what speakers this works on.

I've always assumed this had to do with the woofer rocking the cabinet back and forth, but didn't think a 150 lb speaker would have this effect. 

OP:  What speakers are you using??