To couple or decouple? That is the question.


This is one of my favorite subjects and pet peeves.Is this just a matter of semantics or a misrepresentation of the principles applied in the set-up of equipment. My experience tells me that coupling is what you work for. This is the principle that is expoused in the early Linn literature. The mechanical connection that doesn't introduce or take away any information. This seems important with componets with transducers primarily turntables and speakers. Different materials, like sorbothane, are used to attenuate frequencies but are used in conjunction with metal cups to physically couple to your stand, shelf, floor, etc. Coupling also allows mechanical/acoustical energy to travel away from a componet. The designers at Mission in the early 80's were right on to this. Questions or comments please.
rickmac
The argument seems to be couple because it's easy, as opposed to very hard to decople. The truth lies within your own perception. I have heard the difference between coupled components including speakers and decoupled on two planes, and I prefer the decoupled. It's expensive to do well, and I can see that some wouldn't consider it a good value. Try to borrow some Aurios, if you can, and decide for yourself.
Warren, I did not say that whatever audiophiles are putting their components on top of won't make any sonic differences - What I am saying is that audiophiles who buy into the concept that particularly shaped pieces of metal constitute some sort of scientific, rational approach to the issue are being led by the nose, and are probably paying through it too.
Is it fair to say that most acoustical energy introduced into a system comes from the speakers? Unless you live by a subway station or live in a disco. If you could put your source componets in a separate room with no speaker interaction that would be the best example of decoupling I think. Sony made magnetic componet isolators in the Esprit line in the early 80's and did extensive research on the effects of vibration and microphonics on componets. It seems that the control of resonances, microphonics, and RFI is best addressed by the equipment designer. Obviously I don't want to place my turntable next to my speakers but I do want to have both firmly planted on the ground through spikes or stand.
I don't think I've ever made a better improvement in my system's sound than placing my Oracle Delphi Mk.2 on a fishing line suspended slab of acrylic. The suspension even worked more precisely and it now maintains almost perfect vertical motion when disturbed.
I've done alot of different things with my system(s) over the years. Right now I use coupling, and generally coupling has given me the best results for all my systems.

For a scientific paper on what the purpose of coupling is, look at the website http://www.audiopoints.com.

I use Audiopoints and Sistrum products, and they work better in my system than anything I tried before. I haven't tried everything in the world, but I know when I'm going in the right direction.