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XXHighEnd > Ultimate Audio Playback > XXHighEnd Support > Experience with Switch #3 Up on NOS 1a
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Author Topic: Experience with Switch #3 Up on NOS 1a  (Read 6114 times)
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briefremarks
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« on: January 25, 2016, 01:19:29 am »
Wondering if there are others who have experiences to share with leaving Switch #3 up using the NOS 1a.

I was doing this by default until a couple of days ago.  I'm not sure if this is related, but I suddenly had a very loud "bang".  Music stopped.  I was in unattended mode.  Stopped XXHE.  Looked at the DAC DC offset which was showing -1, essentially like something was not right.

I was certain I had fried something--tweeters, DAC, whatever.  But fortunately not, everything seems to be fine after switching the DAC off/on and also rebooting XXHE.  BUT I am extremely nervous now about keeping Switch #3 on. 

I am not 100% certain that what I experienced was related to Switch #3 being on, but I cannot imagine what else could possible create what appears like an unstable DC offset.

The issue is that SQ seems better with Switch #3 up, so I am wondering if keeping the switch up is safe.
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Audio PC: Stealth III PC; RAM-OS W10 14393.0. 
XXHE version 2.11.
Music Server: XXHE PC, RDC to Audio PC, ET^3 cable
XXHE settings: Q1/xQ1 14/x4, Q3/4/5 0/0/1, SFS 10.13 (Max 120), Clock Res 10ms, Core Scheme:3-5, Driver Buffer 16ms, Balanced Load 35, Nervous Rate 10.
Audio PC -> Lush^3 USB (A: WYRG; B: WG-> NOS1(a,75B, G3) -> Blaxius^2.5 (A:BG, B: BG) -> Orelo Mk II active speakers
boleary
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« Reply #1 on: January 25, 2016, 04:40:29 am »
Is your Silverstone isolated from the PC case? I believe that's the safest way for having switch 3 up.
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XX2.07/MB: ASRock Extreme 4M , i7-3930K @ 0.5GHz/ RAM-OS W10586/32 Gigs 1600 DDR3/ Clarixa usb cable  /Q1,3,4,5 = *14*/1/1/*1* / *Q1Factor = 1* / Peak Extension: Off/Dev.Buffer = 4096 / ClockRes = *.5ms* / Straight Contiguous / SFS = *.02,/ Do Nothing With Cover Art / not Invert / *(Phase Alignment Off  / Playerprio = Low / ThreadPrio = Real Time / Scheme = 3-5 / UnAttended (Just Start) / *All* Services Off except LAN & RDC/ Persist off/No OSD / No Running Time / Minimize OS / Boost on/XTweaks : Balanced Load = *40* / Nervous Rate = 1/ Cool when Idle = NA / Provide Stable Power = 0 / Utilize Cores always = 1 / Time Performance Index = Best/ Time Stability = On/ No Up-sampling/R-2R DAC
briefremarks
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« Reply #2 on: January 25, 2016, 05:59:06 am »
Can you let me know what I should be checking for?  I have the XXHE as it was configured for the original owner from whom I bought it, along with the NOS 1a.  I do not have the original correspondence with Peter on this. 
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Audio PC: Stealth III PC; RAM-OS W10 14393.0. 
XXHE version 2.11.
Music Server: XXHE PC, RDC to Audio PC, ET^3 cable
XXHE settings: Q1/xQ1 14/x4, Q3/4/5 0/0/1, SFS 10.13 (Max 120), Clock Res 10ms, Core Scheme:3-5, Driver Buffer 16ms, Balanced Load 35, Nervous Rate 10.
Audio PC -> Lush^3 USB (A: WYRG; B: WG-> NOS1(a,75B, G3) -> Blaxius^2.5 (A:BG, B: BG) -> Orelo Mk II active speakers
PeterSt
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« Reply #3 on: January 25, 2016, 09:06:18 am »
Hi Ramesh,

For the isolation of the Silverstone card, look here :
Re: USB to PC chassis ground ? (noise) - Bracket.
Mind you, that post from my hand only shows how we did it but you will find more good pictures and good ideas in there from others. It is thus about the idea.

People always do it themselves, as we don't even sell / deliver the card.

Also notice that the "isolation" as such is only about the isolation from the PC chassis at that point. Via other ground paths in the card and in the PC, the (ground) connection is there again, but via another route.
For more understanding (of our (all) own understanding), you can of course read that whole topic, if you have a few spare hours.

Regards,
Peter
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For the Stealth III LPS PC :
W10-14393.0 - July 17, 2021 (2.11)
XXHighEnd Mach III Stealth LPS PC -> Xeon Scalable 14/28 core with Hyperthreading On (set to 14/28 cores in BIOS and set to 10/20 cores via Boot Menu) @~660MHz, 48GB, Windows 10 Pro 64 bit build 14393.0 from RAM, music on LAN / Engine#4 Adaptive Mode / Q1/-/3/4/5 = 14/-/0/0/*1*/ Q1Factor = *4* / Dev.Buffer = 4096 / ClockRes = *10ms* / Memory = Straight Contiguous / Include Garbage Collect / SFS = *10.13*  (max 10.13) / not Invert / Phase Alignment Off / Playerprio = Low / ThreadPrio = Realtime / Scheme = Core 3-5 / Not Switch Processors during Playback = Off/ Playback Drive none (see OS from RAM) / UnAttended (Just Start) / Always Copy to XX Drive (see OS from RAM) / Stop Desktop, Remaining, WASAPI and W10 services / Use Remote Desktop / Keep LAN - Not Persist / WallPaper On / OSD Off (!) / Running Time Off / Minimize OS / XTweaks : Balanced Load = *62* / Nervous Rate = *1* / Cool when Idle = n.a / Provide Stable Power = 1 / Utilize Cores always = 1 / Time Performance Index = Optimal / Time Stability = Stable / Custom Filtering *Low* (16x) / Always Clear Proxy before Playback = On -> USB3 from MoBo -> Lush^3
A: W-Y-R-G, B: *W-G* USB 1m00 -> Phisolator 24/768 Phasure NOS1a/G3 75B (BNC Out) async USB DAC, Driver v1.0.4b (16ms) -> B'ASS Current Amplifier -> Blaxius*^2.5* A:B-G, B:B-G Interlink -> Orelo MKII Active Open Baffle Horn Speakers. ET^2 Ethernet from Mach III to Music Server PC (RDC Control).
Removed Switching Supplies from everywhere (also from the PC).
For a general PC :
W10-10586.0 - May 2016 (2.05+)
*XXHighEnd PC -> I7 3930k with Hyperthreading On (12 cores)* @~500MHz, 16GB, Windows 10 Pro 64 bit build 10586.0 from RAM, music on LAN / Engine#4 Adaptive Mode / Q1/-/3/4/5 = 14/-/1/1/1 / Q1Factor = 1 / Dev.Buffer = 4096 / ClockRes = 1ms / Memory = Straight Contiguous / Include Garbage Collect / SFS = 0.10  (max 60) / not Invert / Phase Alignment Off / Playerprio = Low / ThreadPrio = Realtime / Scheme = Core 3-5 / Not Switch Processors during Playback = Off/ Playback Drive none (see OS from RAM) / UnAttended (Just Start) / Always Copy to XX Drive (see OS from RAM) / All Services Off / Keep LAN - Not Persist / WallPaper On / OSD On / Running Time Off / Minimize OS / XTweaks : Balanced Load = *43* / Nervous Rate = 1 / Cool when Idle = 1 / Provide Stable Power = 1 / Utilize Cores always = 1 / Time Performance Index = *Optimal* / Time Stability = *Stable* / Custom Filter *Low* 705600 / -> USB3 *from MoBo* -> Clairixa USB 15cm -> Intona Isolator -> Clairixa USB 1m80 -> 24/768 Phasure NOS1a 75B (BNC Out) async USB DAC, Driver v1.0.4b (4ms) -> Blaxius BNC interlink *-> B'ASS Current Amplifier /w Level4 -> Blaxius Interlink* -> Orelo MKII Active Open Baffle Horn Speakers.
Removed Switching Supplies from everywhere.
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