Filling speaker Stands?

Just one more example. When reviewing Atacama Nexus stands TNT AUDIO had the following to say.

The performance of the Nexus 7 can be easily improved though. Each stand weighs in 6 kgs (13 lbs) but you can make it heavier by just adding some filler into the central column, for example using the Atacama Atabites "delta-chips"...
Adding the filler makes the stand heavier and less prone to resonate. This adds some extra weight (pun not intended) in the bass department, too. You can experiment with different amounts of filling till you get the desired compromise. Don't think that filling the central column completely is the best option. Try 50%, then 75% and finally judge with your own ears at each step.

So use your own initiative guys and don't just succumb to the 'me too - if some is good then more must be better' crowd. Use your own ears and judgement and you will be amply rewarded. I guarantee 

OP, nice post! Posters, lots of good ideas/opinions! I needed this to remind me to go get sand for my stands...

Tom

So did anyone actually AB the system with filled stands and without filled stands? No. How about a blind test? No.

BB’s are too expensive.
I have also used sand blasting gravel.

geoffkait writes:

So did anyone actually AB the system with filled stands and without filled stands? No. How about a blind test? No.

Um, yes. I had some "bookshelf" speakers on undamped stands for several weeks and came to know playback's resonant peaks and quirks. Then I went to Home Depot and got enough sand to fill the upright columns of both stands.

I was astounded by the improvement. The speakers sounded more like panel speakers, where the sound was suspended in space and there was an absence of boxy resonances and resonant peaks.
Trying to figure the reason for the profound improvement, instead of an "A-ha!" moment, I had more of a "Well, DUH!" moment. I was a percussionist for several years including playing chimes. Chimes are usually hollow tubes of aluminum with an unusual complex array of overtones. Hollow tube uprights for speaker stands are *very* similar to the construction of chimes. The speakers sitting on the speaker stands excite the resonant modes of the metal upright tubes. By filling the tubes with sand, you completely quell these modes and resonances and you are left with just the musical signals coming from the recordings without additional resonances.
I prefer sand over any of the other substances. First of all, it's cheap, second, many speaker stands have tiny openings to their tubular uprights. Sand is the only thing that can always be poured in there. It won't pull humidity out of the air and cake up like kitty litter. It's not too heavy to move like lead shot. Best of all, it has superior damping because it makes full contact with the entire inner surfaces of the tubular uprights, unlike pebbles, kitty litter, lead shot (unless it's very tiny), etc.