Reducing Resonance Between Speakers and Stands – Need Advice

SEISMIC ISOLATION PODIUMS - Townshendaudio

My speaker is floating on these things. The bass was an immediate improvement.

I have a long term experience of trialling isolation methods for HiFi Equipment, where a Cabinet Speaker on a stand and Floor Standing are both worked with.

I can assure you Isolation does work and pneumatic isolation in my investigations have produced improved results over spikes and soft compounds.

What is becoming more and more common today is similar options for Isolation to be used with a 3D Printer, which does have designs that are usable with Speakers. If certain designs from this market were directed at the Audio Market, the item would be much more costly to acquire as a product. If I were to continue with being inquisitive, this is a area I would be exploiting for what it can offer.     

Also as a investigation in conjunction with support methods, don't overlook the value of adding a weight to the top of the cabinet to reduce amplitude produced within the cabinet structure, where when left as an undamped - slow to dissipate   energy, will be quite an unwanted influence on the produced End Sound. This one is free to achieve as an experience, it will only add a cost if wanted to be maintained and a weight to be used has to have a aesthetic attraction.

When altering methods for mounting Speaker Supports and Speakers, along with controlling cabinet amplitude, there will be discoveries made. Made discoveries will be able to create the perception betterment is being achieved. There will also be as a after effect, betterment for being aware where detractors are presenting within the produced End Sound.

There does come a time when the influence of the listening space on the End Sound being produced has to be investigated for making changes. With the intent  to create an improved space for the sound to be formed in.

As in all things audio and the integration of the audio system into the home, where one gets of the bus, with the requirements is each to their own unique situation. 

@OP - Get better stands. If using the existing stands, try blu tack - the no cost option.

Thank you guys, as always, for all the advice and suggestions. I really appreciate it!

@soix 
There isn’t much more I can do with speaker placement at this point – they’re about 1 meter from the rear wall and well away from any sidewalls. My concern is that my cheap stands might not really meet high-end requirements. :) Probably a TV screen between speakers and an empty wall behind doesn't help as well.

@fastfreight 
Good question. The speakers definitely make the stands resonate — I can feel the vibration just by touching them with my hand. I’m not sure whether the stands themselves resonate through the floor. The floor is wooden parquet. Some people use IsoAcoustics ISO-PUCK Minis on top of their stands, and I’ve been considering that too since they’re only around $100 for an 8-pack, so pretty affordable.

@avanti1960 
My stands are inexpensive and hollow, so I could probably try filling them with sand. Do you think that would help? I just need to figure out how to seal the two openings someone made to route cables through. At the moment I’m using felt pads under the speakers, which aren’t doing anything useful. The stands sit on spikes with small metal plates on my wooden floor.

@mashif 
Could you share which exact IsoAcoustics isolation stands and additional damping materials you’re using? I’ve been thinking about putting IsoAcoustics ISO-PUCK Minis between my speakers and stands.

I have BluTak between the speakers and stands (recommended by Robert Harley in his book) , and Herbies between the the stands' spikes and a hardwood floor.

Works beautifully in my case, noticeably tighter bass - FWIW