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briefremarks
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« on: November 30, 2015, 03:54:56 am » |
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Sorry if this is old ground, but having just acquired the NOS 1a, I am still trying to make it sound as best as it can. The DC offset reads +04.7 and -07.0, which I am assuming is outside the recommended +/- 20 mV. I have tried various attempts at turning off/on Switch 2, and the DAC itself. Always the offset remains as shown.
Is there something else that anyone has tried that I am overlooking?
Thanks for the help.
Ramesh
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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
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acg
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« Reply #1 on: November 30, 2015, 09:05:27 am » |
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Sorry if this is old ground, but having just acquired the NOS 1a, I am still trying to make it sound as best as it can. The DC offset reads +04.7 and -07.0, which I am assuming is outside the recommended +/- 20 mV. I have tried various attempts at turning off/on Switch 2, and the DAC itself. Always the offset remains as shown.
Is there something else that anyone has tried that I am overlooking?
Thanks for the help.
Ramesh
Hi Ramesh, You should have the original dc offset numbers that Peter would have sent out when the dac was purchased. They are unique for each dac...so find those numbers first and then see if the numbers you are getting are unusual for your dac. Regards, Anthony |
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Audio PC
Stealth Mach II with Xeon E5 2698 v4 20 Core 2GHz with Hyperthreading On [40 cores]/ 32GB Ram / RAM-OS / mobo USB port
XXHighEnd 2.11 RAM-OS (W14393 RAM)
Engine#4 Adaptive Mode / Buffer 4096 / Q1/3/4/5 = 14/1/1/1 / xQ1 = 1 / Processor Core Appointment Scheme = Core 1-3 / PlayerPrio = Low / ThreadPrio = RealTime / ClockRes = 1ms / Not Switch during playback = off / Xtweaks Balanced Load = 43 / Nervous Rate = 100 / Cool when idle = 1 / Provide stable power = 0 / Utilize cores always = 1 / Time Stability = Stable / Time Performance Index = Optimal / SFS 0.90MB Max 120MB / Straight Contiguous / Include Garbage Collect = on / Start Playback during conversion = off / Do not start playback at all = off / Copy to XX-drive by standard = on / Always clear Proxy before Playback = on / Stop Remaining Desktop Services = on / Stop Desktop Services = on / Stop Remaining Services = on / Stop WASAPI Services = on / Stop W10 Services = off / Keep LAN Services = on / Persist = off / Use Remote Desktop = on/ Arc Predict / Minimize OS = on / Peak Extend = off / Unattended
Audio Chain
Stealth MachII PC >> Lush^2 USB 1.1m >> NOS1a G3 B75, Driver v1.0.4 (4ms) >> Blaxius^2 >> 10Y DHT Preamp >> 6 way active horn speakers (Single Ended Triodes)
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nik.d
Audio Loudspeaker
 Offline
Posts: 178
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« Reply #2 on: November 30, 2015, 09:18:42 am » |
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Above figures are more than perfect. It is +4.7mV and -7.0mV only. Very, very low level of DC at output.
Normal DC, or allowed, expected or 'worry-less' values are in range of up to -20.0mV or +20.0mV.
George
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XXHE 2.11a / W10 14393.0 / Asrock Extreme4-M, Xeon E5-2648L, 16GB DDR3 / NOS1, Starcrimson GaNFET monoblocks, GR Research 'Venuette' OB
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PeterSt
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« Reply #3 on: November 30, 2015, 09:28:16 am » |
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Hi Ramesh,
The DC Offset of your NOS1a as we measured it over here was
+05.2/-06.2mV
This is when cold and when warmer (this is already after 30-60 seconds) it can vary a few mV.
So all is super fine.
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.
Global Moderator
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briefremarks
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« Reply #4 on: November 30, 2015, 10:20:02 am » |
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Thanks everyone, and thank you Peter. I will write up on my listening impressions in a short while. I'm using the Linkwitz Orion speakers, and also completing the LX521 in a few days. 8 channels fo chip amps.
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Logged
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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
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PeterSt
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« Reply #5 on: November 30, 2015, 10:26:15 am » |
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Ramesh, that looks great ! Please consider to put that in your Sig, like we all do. Then it is more easy to help out with ideas or problems. Don't connect the amps to the wrong channels !  Peter |
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Logged
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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.
Global Moderator
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