The best interface I have heard is the Symposium Rollerblocks double-stacked. I've used these for monitor speakers on stands before, the change in sound is not subtle, you will get a more coherent sound, better imaging and better bass.
I am using them for my Klipcsh Cornwalls now. |
Ugh, another person recommending roller blocks. I might actually have to buy a set now.. it's one of the few isolation pieces I can't diy well enough. |
@toddverrone they are really worth it. My system is full of them. |
I generally like the whole idea of double stacking. Whether it’s double stacking with cones and plates or double stacking with a combination of springs and roller bearings or even stacking springs or stacking roller bearings. But one thing to keep in mind is that when the resonant frequencies of the two layers are the same or even close the two layers will naturally interfere. So, the trick, my friends, is to pre-calculate Fr for the two layers to avoid interference. For a dual layer heavy masses and springs system, for example ensure the spring rate of the lower layer is much lower than the upper layer. My Nirvana dual layer isolation platform is based on just that concept, using very heavy masses and steel springs.
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Geoff - what's the formula for Fr? You posted it ages ago and I never wrote it down.. |
@don1, I will try to type slower for you next time.
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toddverrone
Geoff - what’s the formula for Fr? You posted it ages ago and I never wrote it down..
Fr = 1/(2 pi) X square root (k/m), where k is total spring rate and m is total mass
For those who don't like equations use a stop watch to time the oscillations. That gives you Fr.
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Thank you! I love equations...
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In case it’s not obvious, the total spring rate k in the equation is the k for each spring times number of springs. That’s why it’s a good idea to minimize the number of springs and maximize the mass. Since isolation effectiveness is proportional to the Fr.
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Whoa! Yeah, Baby! That's what I'm talking about! Everybody's doing it, doing it!
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Did you mean isolation effectiveness is inversely proportional to spring rate? Effectiveness goes up as Fr goes down, yes? |
That’s why it’s a good idea to minimize the number of springs and maximize the mass. Since isolation effectiveness is inversely proportional to the Fr.
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@jtsnead those look brilliant. What an elegant, simple design. Especially if they work well. |
I am going to set my speakers on top of the Arc d'Triumph |
Well, to be fair, the idea is not original and you can’t see them under the speakers anyway. |
Try Primacoustic Monitor Isolation Pads. They have different sizes to suite the size of your monitors. I use flat RX7 model and they are the best in terms of bringing focus and separation of instruments to my speakers. They only cost $100 each so its not a heavy investment. I even use one of them under my REL sub to great effect. They have been designed for the Pro market. we all know that whilst Pros are prepared to spend $$$ on equipment its not the price that drives them rather positive effect on the sound. Also take a look at this page: http://www.primacoustic.com/reviews/recoil/ |
I'd suggest maybe something from Herbie's Audio Lab. Just go to his website and see what he has to offer. You could even send him an e-mail asking for his suggestion. He is very quick to answer. |
I've been looking at the roller blocks and can't figure out how a heavy speaker sitting on these will not pose a risk of speakers bumped off. Doesn't look like there is much of a "platform" Am I missing something?
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The heavier the speaker, the more inert it will be on top of Rollerblocks. Have a look at my system, you will see I am using Rollerblocks double-stacked. You just have to be careful when in the vicinity of the speakers. Keep in mind, Rollerblocks are to be used in 3s, so that you get a three-point stand and then let gravity do all the heavy lifting.
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@james1969 so the metal ball is sandwiched between the top and bottom puck? Thanks! I'll check out your profile and look for your picture |
@james1969 nice system. I'd be more comfortable using roller blocks on hardwood. I'm on carpeting now. |
I'm in the same boat. We'd have to get a spiked platform for each speaker, then put the roller bearings between the platform and the speaker. My main problem is that my right speaker is right next to the door into the kids' playroom. It has to be very stable. My kids know to be careful, but friends' and neighbors' kids.. not so much |
@dhpeck Thank you for the kind words. My system is a work-in-progress.
@toddverrone Yes, there was one occasion where I almost tipped one of my speakers over, but I saved the day on that occasion. |
The Isoacoustics Gaia footers have been getting good reviews for isolation. They can be used on hard an carpeted surfaces. Anyone tried them? |
I’ve seen them, but they cost almost as much as my amps for two speakers. You need to buy a spike adapter for carpet..
But yes, I'd love a set. |
