I have been using the bigger platforms under my Genesis 500's for several years now and have not had a tipping problem. It was hard as hell to lift those heavy monster speakers onto the Sistrums, but once we did, and got the platform spikes more or less evenly distributed under the base of the speaker, I have not moved anything and have had no problems. Sound with the platforms is incredible, as others above have noted. I was using 3 Audiopoints under each speaker before the platforms, and the platforms were a definite and immediately noticeable improvement. You can see the platforms underneath my Genesis 500's if you view my setup under the Virtual Systems link.
Sistrum Platforms under floor standing speakers
Has anybody tried using these platforms underneath any medium sized ( about 100 lbs ) floor standing speakers ? I understand what Sistrum is trying to accomplish, but I was just wondering about stablity while on the platform, sonic improvements..etc.....I am currently using ''their '' two inch Audiopoints to get my speakers off the floor and was wondering if spending the extra money would be worth my while on their platforms.