Isoacoustics overweight

Without knowing too much about the gaias, it seems like they work like a shock absorber or even springs on a car in terms of downward pressure the weight places on them. So, imagine you have a small set of springs and put a medium to large dump truck on them. They may or may not hold up the truck, but it may not be a smooth ride along bumps or steering etc... 
That is how I view the gaias and their weight capacity. I got the #2 just to be safe, although I was tempted to get the lighter capacity ones. 
It's not about breaking or holding up the speakers, but the footers doing their job in a capable way, instead of being overwhelmed by the weight.

From their website:

The GAIA model should be selected based on the weight that they are supporting. The weight limits we set are based on the performance curve. The GAIA perform well up to the specified weight limits, but once you are within 10% of the weight limit, we recommend using the next size up for best results. We do not recommend exceeding the weight limits of the GAIA’s or GAIA-TITAN’s.

5-10 lbs won’t make much difference whatsoever, they are conservative for optimum efficiency ,they will be fine.

I can’t speak for the Gaias use for speakers, but with the Oreas and my integrated and SACD player, going up to about 90% of the weight limit didn’t sound as good as going up to the next size and utilizing about 40-60% of the weight limit. The difference was noticeable.

I would assume that both Isoacoustic products are designed with similar values to be used.

All the best,
Nonoise

How many helium balloons would you need to lift the extra pounds?