Yes, everything is upstairs.  I have built four of those platforms and combined with the gear and the rack I built that is about 400kg.  The same isolation principles are built into the tube amps in my active horns.

Yesterday I put an AB SS amp onto one of the platforms and I am sure everything sounds better...soundstage has leapt out in size.

Yes, those three knobs are schrader valves that are plumbed into the pneumatic isolators...air springs is another term for them.  That box is anything but hollow and weighs about 80kg (on purpose).

Yes it is Peter.  I could not figure out how to put the image in that specific location.

It is a policy change with the May 8 windows update.  All they changed was the default setting to a more secure one for such connections.  It affects RDC by RDC simply not working in our case, a failure to authenticate...instead an error box comes up saying something about CredSSP and an "authentication error" or some such thing.  Change the policy back to "vulnerable" as I posted earlier and it will all work again.

Type "Group Policy" into the W10 search box and open up "Edit Group Policy".

In the left pane "Computer Configuration" then "Administrative Templates" then "System" then "Credentials Delegation" then in the right pane double-click "Encryption Oracle Remediation" and a new window will open.  In the bottom left pane on this window set "Protection Level" to "Vulnerable" and then ok out of everything.

That should do it.

Hi Stanley,

Sort of.  Let's say I am 9/10th of the way through the process.  The bits are all made and installed but I am yet to play with ways to tweak/improve the result.  In theory everything that I need to do is done but I still want to play with isolation vs coupling in a couple of spots.  Here is a photo of what I have built especially for my NOS1...



First I made a simple steel rack with some damping applied to the shelves.  Then I made the pneumatic isolation platform, also from steel, which is enormously heavy (about 70kg-80kg) with many layers of damping applied.  It really is inert...if you rap your knuckles on it odds are you will bruise them.  The platform provides mostly vertical isolation.

For horizontal isolation I made some rollerblock type cups out of hardened tool steel which was then hard-chromed.  Tungsten carbide bearing balls are used in between.  If I set a ball rolling in the shallow depression of the cup it will rock away on its own for over a minute with no further stimulus...it's freaky to watch in a way.  I have since made some jigs that can be used to perfectly align the lower cup with the upper plate which also allows me to perfectly align the edge of the NOS1a with the edges of the platform...makes life a whole lot easier.

There is the dust issue with the rollerblocks but and I am considering a few ways to keep dust from getting on things and impeding the horizontal isolation.  The bearing ball is an excellent coupler of NOS1a vibrations to the heavy platform, but I think that there is more scope to play with damping rather than coupling here...perhaps.


Vibration isolation in both horizontal and vertical directions should occur at less than 3Hz.  That number is not the really important one though, I am sure that the enormous damped mass has the largest effect.  I have an accelerometer here that I will eventually use to try to take some measurements for what they are worth, just have to find time.  In the meantime the sound is profoundly improved...

Cheers,

Anthony

PS: I started a new thread for this discussion rather than muddy the other one.

Yes, it caused my RDC to fail...had to change the policy back to "vulnerable" to keep it working.

Thanks Peter...listening to some MQA now...

Just tried this...did not change anything.  The file certainly lets me log into Tidal though.

Hi Peter,

The errors show up as the search is happening...so the search box is still on screen and it is filling the leftmost window of XXHE with the albums.  Interestingly, the albums still show up after all of the error messages, but when I try to prepare a stream I get an "Unauthorized" error for each track it tries to download.

I've not used Tidal and XXHE for quite a while, certainly not since 2.10 came out, so I just tried to prepare a stream for a non-MQA album and I received the same "Unauthorized" errors for each track of that album as I had for the MQA albums.  It looks to me like it is a similar login thing again...I will delete the Tidal?? file in the XXHE directory (cannot remember its name) and copy in again the one from last year.


Anthony 

Hi Peter,

I thought I would try some MQA from Tidal (finally).  The MusicServer is running 14393 and XXHE 2.10.  Lets say I do a search for Norah Jones and tick the "All" radio button.  All the non-MQA albums appear in the list just fine, but all of the MQA albums trigger a dialogue box "The remote server returned an error:(401) Unauthorized." I click "Continue" and a second error box comes up for that album "Error GetTidalArtist for:123123" (whatever the number for that artist is).

I thought this may be related to me being able to log into Tidal myself from XXHE, and you having to prepare the file for XXHE with my username and password.

Any thoughts?

Cheers,

Anthony

Hi Peter,

In the search dialog box, the one used for Tidal searches, could you please add a button that clears all of the text boxes?  Hopefully you know what I mean.

Regards,

Anthony

Yes, I have my copy here as well Rob, have not looked at it though.

Hi Peter,

Do you have any other MQA comparisons?  I really did not enjoy the Yello album and could not bring myself to listen to the non-MQA version.  That was the first MQA that I have tried.

Cheers,

Anthony

Yep, completely agree and I did not think this was ever likely to be achieved by changing one or two buttons in software.  For me the change is extraordinary...like wow kind of extraordinary...like changing speakers.