Does it matter if Sorbothane is doing something "objectively" detrimental to the sound if I don't like the sound of it in my system? Is there something "objective" behind all of your sonic preferences? Who decides for me what "excessive resonance" is?
You can see how that might introduce confusion!
The term comes from the world of room acoustical treatment where overuse of absorption softens dynamics and deadens the sound. It is simply applied in common use to describe the similar softening/deadening that some people (including a number of WBF posters) have experienced with Sorbothane. Not a technically correct use but an understandable one I think.
It's like Whack-a-Mole.Oh dear this Sorbothane diatribe still bantering back and forth?--Salectric said: he biffed his out 15 years ago
All mine went to the tip nearly 30 odd ago-- the damn stuff has no place in a HiEnd System -
-but hey what do I know
BruceD
Interesting and timely post. I've just installed a dual-layer Aptitlig bamboo platform for placing under my Michell/SME V TT. I've found these cutting boards to be quite effective and afforable, so I'm going to play with some various configurations. Here's the mine as it's currently configured: the dual Aptitlig is resting on on the Sanus rack shelf on four Herbie's square Fat Dots, one at each corner. I've found the Fat Dots to be quite effective under when used under platforms, or between speaker cabinets and speaker stands as they provide damping with very good "mechanical grounding", per se. They also have enough "grip" due to their texture that they don't move or slide around once in place. Between the top and bottom Aptitlig platform, I've placed an HRS Nimbus Coupler at each corner. I've found these to be excellent under components when used in conjunction with the Nimbus spacers, but as I don't require the spacers for the components in my current set-up (my Constellation Inspiration integrated, for example, already uses the HRS Nimbus couplers as it's footers), it freed up some Nimbus couplers to try out in this configuration experiment.
Photo shows DIY isolation platform supporting my floor mounted Pathos TT, made of two Corian boards (bamboo cutting boards should work fine) with Herbies Giant Dots between them. There are heavy duty adhesive felt pads under the platform so I can slide the amp easily. I have custom drilled (by Marigo Labs) Marigo Mystery Feet between amp and platform. At some point I will replace this platform with one from Wellfloat, but this works well enough that I'm in no rush.
Wow re EVP. Possibly between the APTILIGS?Interesting and timely post. I've just installed a dual-layer Aptitlig bamboo platform for placing under my Michell/SME V TT. I've found these cutting boards to be quite effective and afforable, so I'm going to play with some various configurations. Here's the mine as it's currently configured: the dual Aptitlig is resting on on the Sanus rack shelf on four Herbie's square Fat Dots, one at each corner. I've found the Fat Dots to be quite effective under when used under platforms, or between speaker cabinets and speaker stands as they provide damping with very good "mechanical grounding", per se. They also have enough "grip" due to their texture that they don't move or slide around once in place. Between the top and bottom Aptitlig platform, I've placed an HRS Nimbus Coupler at each corner. I've found these to be excellent under components when used in conjunction with the Nimbus spacers, but as I don't require the spacers for the components in my current set-up (my Constellation Inspiration integrated, for example, already uses the HRS Nimbus couplers as it's footers), it freed up some Nimbus couplers to try out in this configuration experiment.
One of the things I'm going to do is take some measurements using a vibration sensor (there are a number you can get that work with iPhone) and measure their ability to damp vibration using my home-made "slide hammer thing-y" as the device imparting the vibration. The slide hammer is merely a bolt with a socket placed onto it's shaft that I place on the rack and drop from a fixed height to impart vibration onto the rack both repeatibly and reproducibly (it's being able to make repeatible & reproducible measurements that provide statistical power). It's similar to what Norm Varney uses to measure vibration in some of his videos.
Regarding Norm and his EVPs...historically, I've found Norm's EVPs to be the most effective vibration damping products. Here is the result of some studies I did measuring vibration as Imparted Power, RMS using the app, VibSensor, which unfortunately, is no longer available. The data was plotted in the statical analysis program, JMP, using their custom graphing function. Data shown in vibration in the Z Axis (vertical axis).
You can see that the stock Gungnir feet were pretty "Schiit-y" (no pun intended!), the Diversitech dense blue foam and rubber pads (DVT) had issues at 50Hz, and the Herbie's Tenderfoot passed some imparted vibration at about 30 Hz. The EVPs, shown in blue, smoked all the other footers, and by a long ways.
Anyhoo, I'm going to see I can find a similar app, and meaure how well the Aptitlig platform works with the HRS Nimbus couplers, Herbies Tenderfeet and my EVPs. Stay tuned...
Yep, if I get another one, I did the tests under the Gungnir DAC with just three of them. I'd like the platform to be more stable.
The 4" high density EVP's necessary to support the (90+ lb.) weight of a Pathos amp between two boards are $200 ea. x four which is roughly 10X the cost of the Herbie's Big Fat Dots. For me that takes it out of the DIY price range. I would opt instead for a Wellfloat platform or Delta footers.Interesting and timely post. I've just installed a dual-layer Aptitlig bamboo platform for placing under my Michell/SME V TT. I've found these cutting boards to be quite effective and afforable, so I'm going to play with some various configurations. Here's the mine as it's currently configured: the dual Aptitlig is resting on on the Sanus rack shelf on four Herbie's square Fat Dots, one at each corner. I've found the Fat Dots to be quite effective under when used under platforms, or between speaker cabinets and speaker stands as they provide damping with very good "mechanical grounding", per se. They also have enough "grip" due to their texture that they don't move or slide around once in place. Between the top and bottom Aptitlig platform, I've placed an HRS Nimbus Coupler at each corner. I've found these to be excellent under components when used in conjunction with the Nimbus spacers, but as I don't require the spacers for the components in my current set-up (my Constellation Inspiration integrated, for example, already uses the HRS Nimbus couplers as it's footers), it freed up some Nimbus couplers to try out in this configuration experiment.
One of the things I'm going to do is take some measurements using a vibration sensor (there are a number you can get that work with iPhone) and measure their ability to damp vibration using my home-made "slide hammer thing-y" as the device imparting the vibration. The slide hammer is merely a bolt with a socket placed onto it's shaft that I place on the rack and drop from a fixed height to impart vibration onto the rack both repeatibly and reproducibly (it's being able to make repeatible & reproducible measurements that provide statistical power). It's similar to what Norm Varney uses to measure vibration in some of his videos.
Regarding Norm and his EVPs...historically, I've found Norm's EVPs to be the most effective vibration damping products. Here is the result of some studies I did measuring vibration as Imparted Power, RMS using the app, VibSensor, which unfortunately, is no longer available. The data was plotted in the statical analysis program, JMP, using their custom graphing function. Data shown in vibration in the Z Axis (vertical axis).
You can see that the stock Gungnir feet were pretty "Schiit-y" (no pun intended!), the Diversitech dense blue foam and rubber pads (DVT) had issues at 50Hz, and the Herbie's Tenderfoot passed some imparted vibration at about 30 Hz. The EVPs, shown in blue, smoked all the other footers, and by a long ways.
Anyhoo, I'm going to see I can find a similar app, and meaure how well the Aptitlig platform works with the HRS Nimbus couplers, Herbies Tenderfeet and my EVPs. Stay tuned...
