Wow a lot of bad info here. Isolating things that move is important when you don't want to excite other elements of the listening room that add to and change the total sound you perceive. This is an issue of mass vs frequency.
The total sound you perceive is the speaker direct sound + speaker indirect [reflected] sound + room dimensional sound + all vibrating materials in the room [tables, floors, walls etc].
Wooden speaker stands vs heavy Sound Anchor stands is clear evidence of this idea as the wooden stands will vibrate at an audible frequency (knock on them with your knuckles to hear an example) vs hi mass Sound Anchors which vibrate differently due to high mass.
For the spring idea to work, it must be tuned for the weight of thing moving. Random springs set for an unknown weight will not solve your problem. Look at a car or truck, springs are set very specifically depending on weight and the many factors of behavior once excited.
Decoupling sources of LF is important to not waste unwanted mechanical energy vs the energy you want: acoustic energy. Giant generators are isolated from the concrete pad they sit to control vibration that turns into LF hum that can penetrate an entire building and make it impossible to work.
See Noisia Studio Tour | Razer Music - Bing video
this shows the springs used under some fairly heavy (150+ lbs) ATC monitors. Very specific spring rates.
Brad
The total sound you perceive is the speaker direct sound + speaker indirect [reflected] sound + room dimensional sound + all vibrating materials in the room [tables, floors, walls etc].
Wooden speaker stands vs heavy Sound Anchor stands is clear evidence of this idea as the wooden stands will vibrate at an audible frequency (knock on them with your knuckles to hear an example) vs hi mass Sound Anchors which vibrate differently due to high mass.
For the spring idea to work, it must be tuned for the weight of thing moving. Random springs set for an unknown weight will not solve your problem. Look at a car or truck, springs are set very specifically depending on weight and the many factors of behavior once excited.
Decoupling sources of LF is important to not waste unwanted mechanical energy vs the energy you want: acoustic energy. Giant generators are isolated from the concrete pad they sit to control vibration that turns into LF hum that can penetrate an entire building and make it impossible to work.
See Noisia Studio Tour | Razer Music - Bing video
this shows the springs used under some fairly heavy (150+ lbs) ATC monitors. Very specific spring rates.
Brad