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XXHighEnd > Ultimate Audio Playback > XXHighEnd Support > odd problems with playback
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hols
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« on: July 08, 2017, 05:36:10 am »
I need some help here.

I got my NOS1a upgraded to G3 about a month ago. I have been enjoying its sound which is really lively and full. But I also noticed some odd behaviour too.(not sure whether it has been there before since the upgraded G3 gives you everything so clearly that perhaps I am hearing some problem that is there before but not noticed before).

(1) There is occasionally some blurring in the highs usually in the left channel. It is like when you have some dust in your cartridge when you play LP. It usually occurs when there is a full orchestra playing loud passages.
(2) When I start to play the music again after stopping for a day or so the balance in the channels is not equal. The left channel is much louder than the right. Something like 70/30. I have to turn off the NOS1a G3 and restart then it goes back to normal.

I am not sure where is the problem? Hardware or software? I have ruled out problems in other components of my sound system because there is no problem of this sort when I use other sources and I have also changed the connecting XLR cables but the problem still persists. Could it be the RAM is not functioning properly? Or is there anywhere I need to clear some unnecessary files? Or is it because I am still using the xxHighend 2.06? How to update to 2.07?

Thanks for any guidance.

Leung
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arvind
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« Reply #1 on: July 08, 2017, 08:57:46 am »
Hi,

I too have noticed, since the G3 upgrade, the centre image has moved by about 12/18 inches to the left. I had to reposition the R speaker to get the image in the centre.

Best regards,

Arvind
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W10-14393.0 RAM OS / Mach III LPS 14/28/XXHE 2.11/Engine#4/Adaptive Mode/16x /Custom Filter/Q1= 14/0/0/0 xQ1=1/Device Buffer:4096/Invert Phase=On/Minimise OS/PE=off/Unattended/Stop All Services/SFS=20.69/20.69(max)/ClockRes= 15ms/Straight Contiguous/Music on HDD/Lush^3 USB cable A:W-Y-R-G; B:W-Y-R/Phasure NOS 1a/75b/G3 USB DAC. > Blaxius*^2.5 A:B-G, B:B-G Interlink. Orelo MK II active speakers. ET^3 between Mach III & music server. Driver version 1.04/Driver Buffer 16ms. OSD text = Off
PeterSt
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« Reply #2 on: July 08, 2017, 10:03:45 am »
Hi Leung,

Do you *always* check your DC Offset ?
With the G3 upgrade it is more easy to have it off after a power cycle of anything in the chain. Not more easy than prior to the "a" upgrade, but with the "a" upgrade it hardly happened to be wrong. And you bought the "a" as your first, so maybe it is a lack of experience with this ?

If the DC Offset is wrong, then almost by guarantee it is in one channel more wrong than the other, and you will have this unbalance effect, up to clipping because there's no sufficient voltage on one side (plus or minus) for the demand.

Does this help you ?

Kind 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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hols
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« Reply #3 on: July 08, 2017, 05:25:44 pm »
I see. Will check the DC offset tomorrow. Thanks, Peter.

Leung
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