Act chew ally much better than optical bench performance. Optical bench performance is generally 3 Hz due to multiple air springs. No way around it. That’s the advantage of a single air spring. Good luck trying to make one, it’s almost impossible.
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.
Showing 7 responses by geoffkait
oldhvmech My first effort was a 6 degree-of-freedom inverted pendulum 🔜 single airspring 🔚 iso platform that employed heavy ballast mounted below the airspring plus extra large auxiliary air canister and lateral support spring system. Cryod steel rods and hardware. Below 1.0 Hz performance. Repeat, single airspring. Put that in your pipe and smoke it. |
Actually, 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. Machina Dynamica Advanced Audio Conceits Baby Cryo Isolators 🤗 |
vinylfan62 I even tried springs because some people here think that they are the ultimate isolation medium- capable of isolation below 5 hz I was told. No. Loss of bass definition >>>I actually don’t believe you. Springs would only work directly under relatively lightweight speakers due to center of gravity issue. And you would have had to match the spring rates to the load which I doubt you did. For speakers you don’t need to get down below 5 Hz because the speakers don’t produce any frequencies below 20 Hz. The objectives of speaker isolation are different than for components - for speakers you’re preventing mechanical feedback. If you tried to achieve a Fr of 3 Hz for speakers the springs would have to be so “floppy“ the speakers would fall over. And if the springs are too stiff they won’t isolate effectively. I suggest we write this off as operator error. |