Coupling vs Decoupling


I’m new to this forum and have been doing much reading. I’m aware working with the room and equipment can produce dramatic changes in sound. One topic I’m lost with is coupling vs decoupling. When, where and how to apply each method to produce the best outcome?  

My current system is KEF R900 towers with matching center, R600C and surrounds, R300 and a pair of JL E112 subs flanking a Sony A1E TV.  The room is a bonus room approx 24’ x 14’ with all centered on the 14’ wall. 

Currently the towers are equipped with spiked plinths and subs sit directly on the carpet with their OE feet.  Any feedback about how to best manage acoustic vibrations and when/where to apply coupling or decoupling methods is greatly appreciated. 
jdeickhoff

Thank you all for your response and input.  I've just begun the online search to learn of all the available products and options.  I'm interested to learn more about IsoAcoustic and Townshend platforms and pods.  Does anyone have experience or feedback about these companies or products?  Would either of them be a good option for my KEFs and JLs?

http://www.isoacoustics.com/gaia-series/

http://www.isoacoustics.com/orea-bordeaux/

http://www.townshendaudio.com/hi-fi-home-cinema-equipment-vibration-isolation/hi-fi-home-cinema-vibr...

http://www.townshendaudio.com/hi-fi-home-cinema-equipment-vibration-isolation/

Thank you for your time and input.

@geoffkait  - Mass on spring isolation for speakers happens to be a hot topic these days with at least a few Mass on Spring solutions available to audiophiles, including those from your humble scribe.


"From your humble scribe"....... Can you pleae elaborate?  I am very interested to see and learn more.



@jdeickhoff, to see and learn more about mass-on-spring isolation, go to You Tube and do a search for the Townshend Audio Seismic Pod video, on which that product is explained and demonstrated.
I sell two types of springs, one type for lightweight and moderate weight components and the other for moderately heavy and very heavy compondnts. See Machina Dynamica’s Page on vibration isolation at,

http://machinadynamica.com/machina25.htm

Geoff Kait
Machina Dynamica