bass affected by stand filler level?

I have a pair of Dynaudio Focus 140's on Dyn's Stand 4 stands.... I have both tubes filled full with sand will the bass be fuller if less sand is used.

From my experiments with sand and lead filling the steel uprights of Sound-Lab U-1's, I'm certain the bass will be altered.

For better or worse is difficult to guess, the end result will be a combination of interactions between the stand, the floor, the speakers and even the footers used with the stand.

I would guess the bass will be more controlled with the sand, especially if you use spiked feet. Will that be perceived as better bass? You will likely have to experiment to find out.

You are filling the stands with sand to damp them.Over-damping will take the "life" out of the sound.Experimentation is necessary.

Fill them suckers to the top! :)

The true answer is that there is not such thing as "over-damping" a speaker stand... the mass is needed to transfer to floor or subfloor that can reproduce beyond the actual range of the speaker.

High mass and NO decoupling is the best for speakers. Don't believe the marketing crap... firm coupling is the only rule with loudspeaker enclosures.

The coupling or uncoupling issue is as yet unresolved. I am getting a pair of the new Townsend speaker cradles which uncouple the speakers. Presently, I couple the speakers to wooden floors using special tiptoes from the US importer of Acapella and have IsoClean pucks under them. I have heard the decoupling is far superior. I also heard the improvement when Beauhorn came out with a base that decoupled the Virtuoso speakers.

But since you are going with a coupling, I would say that mass over a very small surface, such as with tiptoes would be best. I would therefore fill the stands. I would also suggest that lead shot would be far superior.

Well, I will give a scenario of opposite proportions.. I have used Granite and Sand loading on top of speakers in the past... Granite really thinned out and added some extra level of precise flattened soundstage... Bass was actually a tiny bit tigher, but lost some of the in room feel, so if you want a little more natural impact, than granite on top OR under the speaker was not the best musical sound in my opinion.. Accurate yes maybe, but totally enjoyable no..

Sand however on the top had a similar effect, however to not such a degree... Now that being said fact is if you don't fill the stands, than you may not have as clear of strength in the midrange and highs of the speaker due to loss of mass, however lets say you fill the stand halfway and give up some of the mass you might experience a Fuller more wooly bass sound, so yes you could take the bass to the point of extreme tightness and possibly suffocate that vibration sense if you want more of that.. this is just in theory of what I have mostly experienced, its gonna take a pain in the A$$ of some experimenting trying it both ways dumping and adding sand..

Maybe a Mix of sand filled in by some Lead shot to up the mass and not dampen the speaker stand so much could be a good option too.. Just put in the 5 or 10 pounds of shot and then pour sand over it to filter in between, and just add a little at a time or something and see what kind of tuning you find.