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Shunyata Research Designing Silent Systems for recording, film and music

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  #11  
Old 05-08-2021, 01:12 PM
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Originally Posted by Craig_B View Post
I appreciate the feedback and the link to the video, very informative. I have ordered a few more Delta v2 NR cables that I will use for my components.
That's great to hear, Craig, thanks.

The Delta NR v2 PCs are great cables. They're affordable, have improved NR functionality and outperform the previous gen Alpha NR v1 PCs. As such, they're an excellent value for money. I use one to power my Keces P3 linear power supply that powers my SOtM network bridge and EtherREGEN.
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  #12  
Old 05-08-2021, 07:28 PM
kennyb123 kennyb123 is offline
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Originally Posted by Puma Cat View Post
The Delta NR v2 PCs are great cables. They're affordable, have improved NR functionality and outperform the previous gen Alpha NR v1 PCs. As such, they're an excellent value for money. I use one to power my Keces P3 linear power supply that powers my SOtM network bridge and EtherREGEN.
I’ve been super-impressed with Delta v2. A very nice step up from my previous Alpha HC. Most surprising was the level of improvement with my Antipodes K30 music server. Not subtle.
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  #13  
Old 05-08-2021, 09:45 PM
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I’ve been super-impressed with Delta v2. A very nice step up from my previous Alpha HC. Most surprising was the level of improvement with my Antipodes K30 music server. Not subtle.
Yeah, it's a great cable, and a strong value proposition at its price point. The VTX-Ag conductors provide a notable increase in sound quality.
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  #14  
Old 05-28-2021, 04:18 AM
walakalulu walakalulu is offline
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It would possibly be more efficient to just use a conditioner that has separate isolation for each output and so no need for extra noise reduction in the cables.
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  #15  
Old 05-28-2021, 03:18 PM
kennyb123 kennyb123 is offline
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Originally Posted by walakalulu View Post
It would possibly be more efficient to just use a conditioner that has separate isolation for each output and so no need for extra noise reduction in the cables.
Since even the Everest still benefits from components using NR cables, we may be still a long way from having a conditioner that is that effective. Given that Shunyata prioritizes DTCD, I’m sure they’d love to be able to recommend using only their XC cables, but in the real world the NR technology still provides a worthwhile benefit. Maybe this will always be the case as there is just so much darn noise coming from our components and manufacturers, not surprisingly, don’t seem interested in reducing the noise that comes out of their products.

Ken
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  #16  
Old 05-28-2021, 03:50 PM
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Originally Posted by walakalulu View Post
It would possibly be more efficient to just use a conditioner that has separate isolation for each output and so no need for extra noise reduction in the cables.
No. The reason that there are NR power cords is to prevent noise (e.g. transient noise) from the full-wave bridge rectifiers of component's internal power supplies from coming back out of the component and being distributed to the other components in the system. Remember...it's AC, the current does not go just one way, it alternates directions, what's why it's called...alternating current!

Do ya want noise from a big power amp coming out of the amp to be distributed to the low-signal level components like phono stages, DACs, etc, in your system? No, you don't.

From an article by Caelin: "Most components use FWBR (full wave bridge rectifier) power supplies that generate an incredible amount of transient noise when the rectifiers switch off. The design of a power cable can significantly affect the reactance of these signals within the power supply. The power cable is effectively part of the primary winding of the power transformer. The transition between the various metals used in a power cable and its connectors can cause electromagnetic reflections and diode-like rectification of the noise impulses as they propagate away from the power supply. If the power cable presents a high impedance to these signals they will be reflected back into the power supply where they will intermodulate, thus increasing the high frequency noise levels of the component. Most power supply filters are ineffective at blocking very high frequency noise components and much of it is passed through to the DC rails. The sonic effects of this include: high background noise levels, blurred or slurred transients and a general lack of clarity and purity of the sound or visual image.”

This is specifically why the NR filter is at the IEC plug that plugs into the component; to stop the noise from getting out of the component's power supply. The NR tech in the power distributor blocks noise from the wall AC mains; the NR on the power cord blocks noise coming back out from the component itself.

Another quote from Caelin: "the component is not at the end of the power "hose". It is between two power hoses and the current is oscillating back and forth. Further, current is not like water at all. Electrons cannot be contaminated. There are two aspects to power transmission: the electromagnetic wave and the current flow. The current itself cannot be contaminated but the electromagnetic wave can be modulated with other frequencies. We usually call these other frequencies noise or Electromagnetic Interference (EMI). Within the various parts of a power circuit there may be EMI in certain parts that is not present in others. Electromagnetic energy can be transformed or redirected to lessen their effects."

This is why you want NR power cords on components.
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Last edited by Puma Cat; 05-28-2021 at 03:58 PM.
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  #17  
Old 05-29-2021, 10:45 AM
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My Delta v2 NRs arrived yesterday and I am somewhat in a bind trying to figure out how to best secure the cable to my Mc MA9000 that is on the top shelf of my SolidSteele rack (I goofed in assuming the MA9000 would fit the middle or bottom shelves - it will not without having to remove the feet which I do not what to do - and you can see it also extends out past the end of the shelf). I have used the Audio Bastion risers/supports in my theater rack and will do so for the components in this setup, but can't for the MA9000 that sits on the top and extends out past the back of the shelf. The cable is pretty loose and the weight causes it to sag. Any suggests on how I might secure it in this particular scenario?

Thanks.
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  #18  
Old 05-29-2021, 12:20 PM
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Quote:
Originally Posted by Craig_B View Post
My Delta v2 NRs arrived yesterday and I am somewhat in a bind trying to figure out how to best secure the cable to my Mc MA9000 that is on the top shelf of my SolidSteele rack (I goofed in assuming the MA9000 would fit the middle or bottom shelves - it will not without having to remove the feet which I do not what to do - and you can see it also extends out past the end of the shelf). I have used the Audio Bastion risers/supports in my theater rack and will do so for the components in this setup, but can't for the MA9000 that sits on the top and extends out past the back of the shelf. The cable is pretty loose and the weight causes it to sag. Any suggests on how I might secure it in this particular scenario?

Thanks.
There's some tolerance in the dimensions for the IEC AC power receptacle in components which can cause some PCs to fit a bit on the loose side. A trick I've found that can help is to wrap some black electrical tape around the male IEC plug on the PC, and it will help secure the plug in the receptacle.
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Lumin P1 streamer/DAC/preamp, Constellation Inspiration integrated TT: Michell Gyro SE MkII, SME V, Koetsu Urushi Vermilion, EAR324. Harbeth 30.2s, REL R-305, Shunyata Alpha V2 ICs, Alpha V2 SPs, Sigma XC, Sigma NRv2, Omega QR-s & Alpha NRv2 PCs, segmented Altaira SG stack w/ Alpha & Omega CGCs, Everest 8000 PD. Remote Server Room: Uptone EtherREGEN, AfterDark Master Clock & LPS, Alita, Battle Angel, (Akasa NUC Roon Core), iFi DC Purifiers (for SMPS used for Alita & router), Shunyata Gemini combo power distributor & Altaira-type CG GP-NR hub, Venom & Alpha CGCs, Shunyata NRv14 power cords for digital components.
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  #19  
Old 05-29-2021, 01:24 PM
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Originally Posted by Puma Cat View Post
There's some tolerance in the dimensions for the IEC AC power receptacle in components which can cause some PCs to fit a bit on the loose side. A trick I've found that can help is to wrap some black electrical tape around the male IEC plug on the PC, and it will help secure the plug in the receptacle.


I place a little BluTack on the underside of the plug. This will hold up the bottom of the plug and help hold it in the receptacle, without leaving any residue when you repurpose or sell the cord.
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  #20  
Old 05-29-2021, 03:55 PM
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Originally Posted by Antonmb View Post
I place a little BluTack on the underside of the plug. This will hold up the bottom of the plug and help hold it in the receptacle, without leaving any residue when you repurpose or sell the cord.
That's a great idea, Tony!
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