Any experience with Harmonix feet

Sorry, no experience with the Harmonix stuff, but before spending that kind of money on speaker spike shoes I would try a set of brass disks under the Z-feet first.

Hello,

I used to use the Harmonix RF 999MT Mk2 feet on my Aerial Model 9 speakers.

They tightened up the bass, improved the focus and imaging of the sound stage, and made the music a little more organic sounding.

My floor was granite and i thought it was firm and hard enough for the speaker not to be bothered by vibrations. Boy was i wrong!!

I have loaned these footers to 3 other friends with heavy speakers (over a 200lbs a side), all three of them bought their own sets.

With my current speakers (Genesis 5.3) and its built in suspension system, the footers did not work out as well, both the speaker and the footers did not want to play well....which resulted in a messed up sound.

See if you can find a Harmonix dealer to send you a set of loaners....

Since your floor is not so stiff (slightly springy), you may want to go to Home Depot and get a piece of Granite (inch thick) cut to the foot print of your speakers and try that as well....this MAY help to stabilise the floor from springing....

Thanks guys!
Merlins weighs close to 85 pounds so I will try Brf:s advice.

Agree entirely with Teck5. I am using RF 999-MT myself with dramatic impact; they proved to be a necessary addition after redecoration of the listening room.

Be aware, Harmonix themselves call these "tuning feet", so nothing to experiment with in a whim! You really need to audition these and it is advisable to talk to a certified Harmonix dealer about what may be the best fit product in your room with your speakers.

Just for the sake of additional information. Stone platforms, as suggested bw Teck5 may actually be a full-fledged option rather than someting additional. May I ask you, where you are located? There is a small local company here called Subbase Audio who manufacture brilliant loudspeaker platforms. Custom made only, they use slate, instrument wood and a mix of minerals (that remains undisclosed proprietary research, of course) in a variety of finishes at a cost that may be well below 2 sets of the big Harmonix tuning feet. (Don't know whether the latter still holds if they had to be sent overseas, hence my previous question where you live).) Anyway, these heavy platforms do not "tune" in any way, they stabilize the speaker and elimine detrimental influences to the highest possible degree, whilst at the same time optimizing coupling and effectively dissipating resonances. I have similar platforms for my amplification that work great.
http://www.subbaseaudio.de/
Sorry, no English version, to see the product, click Subbase écho LS on the left, on the new page there are thumbnails that will open a gallery when clicked