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Author Topic: Phisolator  (Read 751 times)
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briefremarks
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« on: October 13, 2019, 03:51:51 am »

There have been a few threads in the past on USB errors and SQ glitches resulting from the extreme sensitivity of the Phisolator USB connection.  A quick note to document my recent experience.  I was starting to get music interruptions and SQ glitches fairly frequently (every 30 - 45 seconds or so).  Bypassing the Phisolator fixed the problem but I preferred SQ with the Phisolator in-line.

Tried various buffer settings 2ms, 4ms, 8ms, 16ms--none of them really worked.  Replaced the Phisolator USB cable that came with the NOS1 G3 with a short Clarixa cable I had laying around.  Much improved!  Whole albums without a glitch! 

There have been discussions on SQ with and without the Phisolator.  My experience is that Lush^2 with the Phisolator gives me the best SQ.  And as far as Lush^2 configurations go, I really like A: xWYxxx B: xWYRxx.  I have jumper caps on the unused pins.

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Audio PC: Stealth III PC; RAM-OS W10 14393.0. 
XXHE version 2.10c.
Music Server: XXHE PC, RDC to Audio PC
XXHE settings: Q1/xQ1 5/x30, Q3/4/5 1/1/1, SFS 0.69 (Max 120), Clock Res 15ms, Core Scheme:3-5, Driver Buffer 16ms, Balanced Load 35, Nervous Rate 10.
Audio PC -> Lush^2 USB cable (A: B-W & Y-R; B: B-W -> NOS1(a,75B, G3) -> Blaxius^2 (A:B-R, B: B-R) -> Orelo Mk II active speakers
Nick
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« Reply #1 on: October 13, 2019, 12:42:46 pm »


I dont know if you have seen this post. The problem I had is likley to be a very rare failiure but I had a VERY fustrating time solving similar clicking and viariable sound quality symptoms that were localised to my NOS USB input. It turned out to be an intermitant fault on the NOS's short USB cable. Full details are here, its very simple to rule this out, just swop out the short USB cable with another USB cable and see if you still get the clicks.

http://www.phasure.com/index.php?topic=4099.msg44030#msg44030

Kind regards,

Nick.
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Audio PCs
PC No. 1: 621 motherboard Xeon 32 thread CPU.
PC No 2: X99 motherboard Xeon 28 thread CPU - modified motherboard.

 w10 14393 RAM OS => XX V2.10 / adaptive mode / XX buffer 4096 / NOS USB driver v 1.02 buffer 16ms / Q1,2,3,4,5 = 5,-,1,1,1 / xQ1 =30 / unattended / SFS 0.69Mb / memory straight continuous / system clock 15.0ms / Threadprio RealTime / Playerprio Low / CPU scheme 3-5 / 16x Arc Prediction / Peak Extend off / Phase alignment off / Phase off  / XTweaks : Balanced Load 35 / Nervous Rate 10 (or15) / Cool when Idle n/a / Provide Stable Power 0 / Utilize Cores always 1 / Time Performance Index = Optimal / Time Stability  On => Lush USB cable => modified NOS1 USB DAC => no pre amp => Orelo active horn loudspeakers with modified bass channel DSPs.

Music server: X99, Xeon 16 thread PC.

System powered direct from mains.
briefremarks
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« Reply #2 on: October 13, 2019, 07:08:12 pm »

Nick,

This seems to be precisely the problem I had.  I replaced the short USB cable with another one, a short Clarixa that I had from when I was using the Intona box.  So far it has worked well.  Very few, occasional glitches, but nothing like before.

Ramesh
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Audio PC: Stealth III PC; RAM-OS W10 14393.0. 
XXHE version 2.10c.
Music Server: XXHE PC, RDC to Audio PC
XXHE settings: Q1/xQ1 5/x30, Q3/4/5 1/1/1, SFS 0.69 (Max 120), Clock Res 15ms, Core Scheme:3-5, Driver Buffer 16ms, Balanced Load 35, Nervous Rate 10.
Audio PC -> Lush^2 USB cable (A: B-W & Y-R; B: B-W -> NOS1(a,75B, G3) -> Blaxius^2 (A:B-R, B: B-R) -> Orelo Mk II active speakers
Nick
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« Reply #3 on: October 14, 2019, 10:13:57 pm »

Nick,

This seems to be precisely the problem I had.  I replaced the short USB cable with another one, a short Clarixa that I had from when I was using the Intona box.  So far it has worked well.  Very few, occasional glitches, but nothing like before.

Ramesh


Hey Ramesh,

Result !

It drove me round the bend when I had the problem. Even a change temprature would send the resistance of the d+ d- lines all over, let alone touching / moving the USB cable. Sound quality apeared to have mind of its own until it was fixed.

I hope this is the solution for your system.

Kind regards,

Nick.
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Audio PCs
PC No. 1: 621 motherboard Xeon 32 thread CPU.
PC No 2: X99 motherboard Xeon 28 thread CPU - modified motherboard.

 w10 14393 RAM OS => XX V2.10 / adaptive mode / XX buffer 4096 / NOS USB driver v 1.02 buffer 16ms / Q1,2,3,4,5 = 5,-,1,1,1 / xQ1 =30 / unattended / SFS 0.69Mb / memory straight continuous / system clock 15.0ms / Threadprio RealTime / Playerprio Low / CPU scheme 3-5 / 16x Arc Prediction / Peak Extend off / Phase alignment off / Phase off  / XTweaks : Balanced Load 35 / Nervous Rate 10 (or15) / Cool when Idle n/a / Provide Stable Power 0 / Utilize Cores always 1 / Time Performance Index = Optimal / Time Stability  On => Lush USB cable => modified NOS1 USB DAC => no pre amp => Orelo active horn loudspeakers with modified bass channel DSPs.

Music server: X99, Xeon 16 thread PC.

System powered direct from mains.
PeterSt
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« Reply #4 on: October 15, 2019, 05:45:02 pm »


Quote
Even a change temprature would send the resistance of the d+ d- lines all over

Nick, how would you know the resistance of the d+ and d- lines ? And what does it mean, "all over" ?

I'm asking because I have no idea what you are talking about.

Thanks !
Peter
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For the Stealth III LPS PC :
W10-14393.0 - Oct 31, 2018 (2.10)
XXHighEnd Mach III Stealth LPS PC -> Xeon Scalable 14/28 core with Hyperthreading On (set to 10/20 cores) @~660MHz, 48GB, Windows 10 Pro 64 bit build 14393.0 from RAM, music on LAN / Engine#4 Adaptive Mode / Q1/-/3/4/5 = 30/-/1/1/1/ Q1Factor = 10 / Dev.Buffer = 4096 / ClockRes = 15ms / Memory = Straight Contiguous / Include Garbage Collect / SFS = 140.19  (max 140.19) / 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 = 35 / Nervous Rate = 10 / Cool when Idle = n.a / Provide Stable Power = 0 / Utilize Cores always = 1 / Time Performance Index = Optimal / Time Stability = Stable / *Arc Prediction Filtering (16x)* / Always Clear Proxy before Playback = On -> USB3 from MoBo -> Lush^2*A:B-W-Y-R, B:B-W-R* 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 A:B-R, B:B-R* Interlink -> Orelo MKII Active Open Baffle Horn Speakers.
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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Nick
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« Reply #5 on: October 15, 2019, 06:56:02 pm »


Quote
Even a change temprature would send the resistance of the d+ d- lines all over

Nick, how would you know the resistance of the d+ and d- lines ? And what does it mean, "all over" ?

I'm asking because I have no idea what you are talking about.

Thanks !
Peter

Peter hi,

Take a look a couple of posts back in this thread up at the link I placed in my first reply. The d+ d- resistance is the measured resitance of the short USB cable data lines that went bad.

Regards,
Nick.
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Audio PCs
PC No. 1: 621 motherboard Xeon 32 thread CPU.
PC No 2: X99 motherboard Xeon 28 thread CPU - modified motherboard.

 w10 14393 RAM OS => XX V2.10 / adaptive mode / XX buffer 4096 / NOS USB driver v 1.02 buffer 16ms / Q1,2,3,4,5 = 5,-,1,1,1 / xQ1 =30 / unattended / SFS 0.69Mb / memory straight continuous / system clock 15.0ms / Threadprio RealTime / Playerprio Low / CPU scheme 3-5 / 16x Arc Prediction / Peak Extend off / Phase alignment off / Phase off  / XTweaks : Balanced Load 35 / Nervous Rate 10 (or15) / Cool when Idle n/a / Provide Stable Power 0 / Utilize Cores always 1 / Time Performance Index = Optimal / Time Stability  On => Lush USB cable => modified NOS1 USB DAC => no pre amp => Orelo active horn loudspeakers with modified bass channel DSPs.

Music server: X99, Xeon 16 thread PC.

System powered direct from mains.
PeterSt
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« Reply #6 on: October 16, 2019, 12:23:30 pm »


Hi Nick,

Quote
Won't bother you with how the issue was isolated, but it turned out to be the short USB cable on my NOS1. Once it was pinpointed I put a meter on the short USB d+ and d- pins. The resistance was all over the place anything from 100 ohms to a few K ohms ! The culprit was the moulded connector at the small end of the cable. Move the cable near the connector and the resistance went anywhere.

I am afraid that I had read that, but this is exactly the part that doesn't make sense to me.
You imply that you connected measurement wires to the d+/d- pads somehow (how ??) and you say that you move *the* (??) cable near *the* ?? connector and that this influenced the resistance.
For me this is 3 parts I each don't understand.
And oh, I am not saying that something is not - or can't be true … I just don't understand.

You seem to move the cable in a magnetic field and then the resistance changed ?
… So now you'll understand how I read your text, OK ?

Peter
Logged

For the Stealth III LPS PC :
W10-14393.0 - Oct 31, 2018 (2.10)
XXHighEnd Mach III Stealth LPS PC -> Xeon Scalable 14/28 core with Hyperthreading On (set to 10/20 cores) @~660MHz, 48GB, Windows 10 Pro 64 bit build 14393.0 from RAM, music on LAN / Engine#4 Adaptive Mode / Q1/-/3/4/5 = 30/-/1/1/1/ Q1Factor = 10 / Dev.Buffer = 4096 / ClockRes = 15ms / Memory = Straight Contiguous / Include Garbage Collect / SFS = 140.19  (max 140.19) / 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 = 35 / Nervous Rate = 10 / Cool when Idle = n.a / Provide Stable Power = 0 / Utilize Cores always = 1 / Time Performance Index = Optimal / Time Stability = Stable / *Arc Prediction Filtering (16x)* / Always Clear Proxy before Playback = On -> USB3 from MoBo -> Lush^2*A:B-W-Y-R, B:B-W-R* 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 A:B-R, B:B-R* Interlink -> Orelo MKII Active Open Baffle Horn Speakers.
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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Nick
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« Reply #7 on: October 16, 2019, 03:43:49 pm »


Hi Nick,

Quote
Won't bother you with how the issue was isolated, but it turned out to be the short USB cable on my NOS1. Once it was pinpointed I put a meter on the short USB d+ and d- pins. The resistance was all over the place anything from 100 ohms to a few K ohms ! The culprit was the moulded connector at the small end of the cable. Move the cable near the connector and the resistance went anywhere.

I am afraid that I had read that, but this is exactly the part that doesn't make sense to me.
You imply that you connected measurement wires to the d+/d- pads somehow (how ??) and you say that you move *the* (??) cable near *the* ?? connector and that this influenced the resistance.
For me this is 3 parts I each don't understand.
And oh, I am not saying that something is not - or can't be true … I just don't understand.

You seem to move the cable in a magnetic field and then the resistance changed ?
… So now you'll understand how I read your text, OK ?

Peter

Hi Peter,

Its nothing complex, just a faulty USB cable. The d+ d- pina in a USB cable are the data differential pair (sure you know that). The resistance measured was from the USB cable's A type connector d+ to the B type connector d+ pin (same for the d- pins).

The cable's d+ and d- wires had a physical connection problem inside the cables moulded B type connector on the cable. As the cable was put under any physical stress (eg bending) the  resistance which sould be close to zero ohms for each  data line went all over the place from a few ohms to 10s of K ohms. Amazing that the NOS worked with this problem in the short USB cable.

All I am describing measuring the "broken" cable on its own.

Cheers,

Nick.
Logged

Audio PCs
PC No. 1: 621 motherboard Xeon 32 thread CPU.
PC No 2: X99 motherboard Xeon 28 thread CPU - modified motherboard.

 w10 14393 RAM OS => XX V2.10 / adaptive mode / XX buffer 4096 / NOS USB driver v 1.02 buffer 16ms / Q1,2,3,4,5 = 5,-,1,1,1 / xQ1 =30 / unattended / SFS 0.69Mb / memory straight continuous / system clock 15.0ms / Threadprio RealTime / Playerprio Low / CPU scheme 3-5 / 16x Arc Prediction / Peak Extend off / Phase alignment off / Phase off  / XTweaks : Balanced Load 35 / Nervous Rate 10 (or15) / Cool when Idle n/a / Provide Stable Power 0 / Utilize Cores always 1 / Time Performance Index = Optimal / Time Stability  On => Lush USB cable => modified NOS1 USB DAC => no pre amp => Orelo active horn loudspeakers with modified bass channel DSPs.

Music server: X99, Xeon 16 thread PC.

System powered direct from mains.
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