Feedback through turntable

We've heard from everyone but the OP.  Have you done any of the recommended experiments and what were the results?  Inquiring minds want to know. Thanks.

lewm,

My thoughts exactly.

13blm,

Not to get into a debate, but I've heard the difference in my own system of various aftermarket cones, stillpoints etc... Saying they do nothing for isolation is just plain wrong in my experience. Maybe we could get into the symantics of isolation vs. effective ways of dealing with
vibrations/resonances but I won't do that. I just report on my experiences.

Good luck with your products!

Coupling a component to a vibrating surface isn’t "isolation". As a turntable manufacturer I have a pretty good idea of what works, however there are many variables and results can be unpredictable. I consider direct coupling methods as "tuning" devices. Isolation devices I feel offer a more accurate window into what the product was designed for. Also my footers are adjustable and can couple or isolate according to customers desires.  Any method that increases your listening pleasure is the correct choice! 

Going on the advice of "How to Get Better Sound", I placed my TT platform on the side wall about 3 feet from my left speaker. Because my sound room is on the second floor and I have a suspended floor, I built a suspended platform, out from my wall using appliance springs and tie-down straps/metal cables, so it basically "floats." This worked great, until I added another JL Fathom 13 sub. I couldn’t even turn the subs on, due to low frequency feedback that would build on itself. I tried the inner tube trick, the sandbox trick-everything I could think of to no avail. I finally moved my turntables to between the speakers. I’m sure, some of you are thinking-what a moron-everyone knows that and I would agree. It took me several trial and error positions, to find this place, where no room nodes are effecting the playback. I think in the long run, acoustical energy has a huge effect, on the playback, specially at high volume levels. As far as cones go, I was a skeptic. I have a Theta Miles CD player I dearly love and only use analog outs on it. I had to utilize thick foam, so the low frequency would not effect the playback. (too much low frequency for the room size) I placed four cones, one under each corner of the CD player and was amazed to not have anymore low frequency pick-up. Maybe I will try just three cones in the future. I know you said you can’t move your equipment, but as mentioned above, sometimes just a little change, can have a huge effect on your sound. Room nodes can be neutralized some, with room treatment. As a matter of fact, I think proper room treatment, used in the proper way, will give most of us better sound, than an equipment upgrade. I’m a believer in Dennis Foley’s technique and products. If you haven’t tried them, or are not familiar with them, go to his web sight "Acoustic sounds." 

Thank you for your honest response.

Sorry to say that after all of the info I/we provided.some like toddverone chose to post their resulting info on another thread.

The OP never responded.... Toddverrone took the info and ran somewhere else.

I'm not getting a good vibe???

Sorry I took the time.