2. misc-audio
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Just confused

Hi I am fairly new to using high quality audio equipment.  I have assembled all of the gear I want for listening/enjoying the music.  Of course it’s only a matter of time before you ask yourself “What if?”.  I understand that room acoustics matter so I am off trying to implement acoustic panels - some good relatively consistent advice here.  What I struggle with is the subject of vibration control/isolation ... the advice from the community is not very consistent.  The floor in my listening room is slab cement with ceramic tiles on top.  I have Avant-garde Uno speakers (with spikes since that is they way they came), REL subs (rubber feet) and effectively an unbranded equipment rack (with spikes).  Are spikes what I should remain with for this kind of surface?  Does it make more sense to decouple the speakers and rack from the floor with some kind of isolation device?  Should I be replacing the current metal spikes with “cones” (or other device).  Should I use the same device for speaker and rack?  I just want to avoid shelling out a bundle of money for something that may turn out being a negative.  Thanks in advance for your patience with my naive questions.
chilli42

Showing 2 responses by oldhvymec

oldhvymec
5,101 posts
 
I'm a decouple guy, no matter what. Though that concrete floor is
a good place to help with vibration control. If your a LP guy, Vibration 
control yourself, into oblivion, great idea. I use to be very aware of Vinyl issues.  To many silver disk, streaming, and servers anymore. I have a slough of TT gear here though.. Still the best..

What if there was no vibration? You know, windows, walls, floors, all the boundaries. The more bass you make, the more you have to control. Decouple, and use an Ampa style listening room, open the back up. LOSE the noise, don't make it, or control it with treatment..

What if there was no vibration? It sure would fix a lot of problems, ay?

Regards


oldhvymec
5,101 posts
 
geoffkait21,851 posts05-16-2020 7:19amActually, as a designer of iso systems, I can say without fear of contradiction that compression springs actually do not provide any isolation in the horizontal plane, which defines an infinite number of directions. Depending on how one sets up the system, however, springs can provide isolation in 2 of the 3 rotational directions. Value added! 🤗

The reason compression springs are excellent at isolating moderate to heavy components is because they are very stiff in the horizontal directions, providing much needed lateral support.
Add air suspension, inside the coil and  underneath via a cantilever.
The vertical becomes very stable and very isolated, With a single bag for all 4 corners.  It can be adjusted with a simple nitrogen charge.  Close to zero, harmonics, then.  The bag could be centered under the cabinet, henged X 4. Silicone mount the four fulcrum points.
Spring work/help, you just have to dampen them too, along with henge points..
OR
Hang it like a heavy bag on an inverted, spring, they are adjustable too.

Regards..
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