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A novel way to massively improve the SQ of computer audio streaming

austinpop

By austinpop
in Music Servers

The Computer Audiophile
Message added by The Computer Audiophile

Important and useful information about this thread

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History and index of useful posts

Most important: please realize this thread is about bleeding edge experimentation and discovery. No one has The Answer™. If you are not into tweaking, just know that you can have a musically satisfying system without doing any of the nutty things we do here.

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R1200CL

R1200CL

Posted
Posted
21 hours ago, Cornan said:

 

Thanks anyway Moussa! As far as I see it word clock cables is just normal coaxial cables, so I guess a little common sense is enough to find a good one. I will start with the one I found in 15cm. If it works good I will take the next step and special order the optimal one. ?

 

Why not email Ghent ?

You should add JSSG. Clock cables are more sensitive than females ?

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  • 4 months later...
R1200CL

R1200CL

Posted
Posted
On 5/30/2018 at 9:57 PM, lmitche said:

Tinned copper sleeving is used for USB and networks cables. Gotham for DC cables. Yes Gotham sounds better then Canare.

 

When you say sounds better than Canare, I suppose you haven’t tested against the Canare made with JSSG ? (From Ghent)

 

BTW. Has anyone asked Ghent to make this cable ?

 

And why not add another drain wire in addition ?

 

 

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R1200CL

R1200CL

Posted
Posted
On 5/30/2018 at 4:26 AM, lmitche said:

Hi all,

 

In the true spirit of this thread, I'd like to introduce you to JSSG 360.  Thinking about John Swensons JSSG cable tweak, a layer of tinned copper shielding with the ends connected with a drain wire, it occurred to me that instead of the drain wire, a layer of insulation followed by another layer of tinned copper would likely to be better. With the two layers of tinned copper attached at the end points, the SQ impact is much greater then the current, and brilliant, JSSG tweak. This tweak works on DC cabling, network cabling and USB cables.

 

Having recently treated one of Rajiv's Lush cables with JSSG 360, he can vouch for the SQ impact.

 

I am quite excited to have found the Gotham Audio USA Gac4/1 ultra pro cable which has JSSG 360 built-in. Once again, just connect the inner and outer shielding at the endpoints and you have JSSG 360 SQ.

 

Unfortunately, I can't explain why JSSG 360 sounds so good. But I've been treating my cables this way since last fall and it seems to work without fail on any cable.

 

Enjoy JSSG 360.  You will be amazed at the new life you will get out of your existing cabling.

 

Larry

 

https://www.ghentaudio.com/part/dc-gac4.html

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R1200CL

R1200CL

Posted
Posted
15 hours ago, seeteeyou said:

Since we're aware that even $55 OCXO clock is great for switches, some of us might wanna get our hands on some guinea pigs for experiments. 3Com might not be as good as Cisco Catalyst but it should be better than other consumer-oriented brands out there.

 

FYI - here's a list of switches on eBay, they're either unused or brand new:

 

Connor-Winfield OH4610LF-025.0M

https://www.digikey.com/product-detail/en/connor-winfield/OH4610LF-025.0M/CW899-ND/5641634

 

Case of (8) NEW IN BOX 3COM 5-Port Fast Ethernet Switch 3CFSU05

https://www.ebay.com/itm/Case-of-8-NEW-IN-BOX-3COM-5-Port-Fast-Ethernet-Switch-3CFSU05/202342481711

 

Lot of 5 3Com OfficeConnect Dual Speed 5-Port Ethernet Computer Network Switch
https://www.ebay.com/itm/Lot-of-5-3Com-OfficeConnect-Dual-Speed-5-Port-Ethernet-Computer-Network-Switch/273265337598

 

Lot of 5 3Com OfficeConnect Dual Speed 5-Port Ethernet Computer Network Switch

https://www.ebay.com/itm/Lot-of-5-3Com-OfficeConnect-Dual-Speed-5-Port-Ethernet-Computer-Network-Switch/273321472412

 

4x New 3Com 10/100/1000 Mbps 8 Port Auto Sensing / MDIX Switch | 3CGSU08A
https://www.ebay.com/itm/4x-New-3Com-10-100-1000-Mbps-8-Port-Auto-Sensing-MDIX-Switch-3CGSU08A/382505884306

 

6x New 3 Com / IBM 3CGSU08A 8 Port Ethernet Switch & Adapter | 100-240 VAC
https://www.ebay.com/itm/6x-New-3-Com-IBM-3CGSU08A-8-Port-Ethernet-Switch-Adapter-100-240-VAC/382498059843

 

Lot Of(5)3Com 3C16791B OfficeConnect Dual Speed Switch 8 ports NEW
https://www.ebay.com/itm/Lot-Of-5-3Com-3C16791B-OfficeConnect-Dual-Speed-Switch-8-ports-NEW/223029929576

 

3Com 3CFSU05 5-Ports External Switch
https://www.ebay.com/itm/3Com-3CFSU05-5-Ports-External-Switch/132325723699

 

3Com 3CFSU05 Switch 5 5-ports
https://www.ebay.com/itm/3Com-3CFSU05-Switch-5-5-ports/223008048129

 

3Com OfficeConnect Fast Ethernet Switch 5
https://www.ebay.com/itm/3Com-OfficeConnect-Fast-Ethernet-Switch-5/173239089326

 

3COM Wired 5-Port Fast Ethernet Full-Duplex Giga Switch 1000Mbps 3CFSU05
https://www.ebay.com/itm/3COM-Wired-5-Port-Fast-Ethernet-Full-Duplex-Giga-Switch-1000Mbps-3CFSU05/182865001909

 

3Com OfficeConnect Dual Speed 5-Port Ethernet Computer Network Switch 3C16790B
https://www.ebay.com/itm/3Com-OfficeConnect-Dual-Speed-5-Port-Ethernet-Computer-Network-Switch-3C16790B/273321472411

 

3Com OfficeConnect Dual Speed 5-Port Ethernet Computer Network Switch 3C16790B
https://www.ebay.com/itm/3Com-OfficeConnect-Dual-Speed-5-Port-Ethernet-Computer-Network-Switch-3C16790B/273265338047

 

3COM Wired 5-Port Fast Ethernet Full-Duplex Giga Switch 1000Mbps 3CFSU05
https://www.ebay.com/itm/3COM-Wired-5-Port-Fast-Ethernet-Full-Duplex-Giga-Switch-1000Mbps-3CFSU05/222466820017

 

3Com OfficeConnect Dual Speed Switch 5 - switch - 5 ports
https://www.ebay.com/itm/3Com-OfficeConnect-Dual-Speed-Switch-5-switch-5-ports/263784257401

 

3Com OfficeConnect Fast Ethernet Switch 5 - switch - 5 ports
https://www.ebay.com/itm/3Com-OfficeConnect-Fast-Ethernet-Switch-5-switch-5-ports/222644043260

 

3Com 3CFSU05 Ethernet Switch 5 Port x 10/100
https://www.ebay.com/itm/3Com-3CFSU05-Ethernet-Switch-5-Port-x-10-100/323324666721

 

3com - 3cfsu05 switch 5 porte 10/100mbps rj45
https://www.ebay.com/itm/3com-3cfsu05-switch-5-porte-10-100mbps-rj45/263729259589

 

3com OfficeConnect Switch 5 - 3C16793 - 5 10/100 Fast Ethernet Ports - Neu
https://www.ebay.com/itm/3com-OfficeConnect-Switch-5-3C16793-5-10-100-Fast-Ethernet-Ports-Neu/163117221089

 

3Com Office Connect Switch 8 10/100Mbps, beige, NEU&OVP
https://www.ebay.com/itm/3Com-Office-Connect-Switch-8-10-100Mbps-beige-NEU-OVP/253128550889

 

3Com 3C16794-US OfficeConnect Switch 8 Ports 10/100 Mbit/s
https://www.ebay.com/itm/3Com-3C16794-US-OfficeConnect-Switch-8-Ports-10-100-Mbit-s/153075613350

 

3Com 3C16791A OfficeConnect Dual Speed 8-Port Switch NUOVO BTP NHSWE8 ETHERNET
https://www.ebay.com/itm/3Com-3C16791A-OfficeConnect-Dual-Speed-8-Port-Switch-NUOVO-BTP-NHSWE8-ETHERNET/132673751021

 

New 3Com 3CGSU08A 10/100/1000 Mbps 8 Port Auto Sensing/ MDIX Switch | Wired
https://www.ebay.com/itm/New-3Com-3CGSU08A-10-100-1000-Mbps-8-Port-Auto-Sensing-MDIX-Switch-Wired/132649696715

 

3COM/HP -3CFSU08/ V1405-8 ETHERNET SWITCH 8-PORT 10/100 w/ power cord
https://www.ebay.com/itm/3COM-HP-3CFSU08-V1405-8-ETHERNET-SWITCH-8-PORT-10-100-w-power-cord/162986937842

 

JD866A I Factory Sealed Retail HP HP 1405 Small Office V1405-5 Switch
https://www.ebay.com/itm/JD866A-I-Factory-Sealed-Retail-HP-HP-1405-Small-Office-V1405-5-Switch/113083725888

 

HP 1405 Small Office V1405-5 Switch , JD866A HEWLETT PACKARD
https://www.ebay.com/itm/HP-1405-Small-Office-V1405-5-Switch-JD866A-HEWLETT-PACKARD/283030392787

 

HP JD866A V1405-5 3CFSU05 5-Port Ethernet Switch
https://www.ebay.com/itm/HP-JD866A-V1405-5-3CFSU05-5-Port-Ethernet-Switch/173362533947

 

HP V1405C-5 Switch 5x 100 - JD853A Neu
https://www.ebay.com/itm/HP-V1405C-5-Switch-5x-100-JD853A-Neu/390641871379

 

I think the best switch is still to use the one John Swenson found was totally blocking leakage. 

 

Cisco SG100D-8. Don’t have the link to the post as all my bookmarks are gone. 

 

He tested the V2 version. I suppose the 5 port version also works. 

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  • 1 month later...
R1200CL

R1200CL

Posted
Posted
On 7/22/2018 at 2:09 PM, Cornan said:

A question regarding LPS-1.2. Have anyone tried to feed the LPS-1.2 with a battery pack? Since LPS-1.2 is somewhat sensitive to the feeder supply IME it could be an interesting thing to try. I do have a 16.8v (6A) lithium battery pack that I could try. It is in storage at the moment so I’ll need to dig it out. It would be helpful if someone knows if it is worth a persue or not?

 

I know for sure a LPS-1.2 with battery will measure slightly different (better) vs SMPS. 

I have seen the curves. 

 

If the will will affect the SQ it another question. We are in the noise level below or between -140 to -160 dB. 

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R1200CL

R1200CL

Posted
Posted
On 7/23/2018 at 6:08 PM, BigGuy said:

Maybe a silly or previously discussed topic but has anyone compared a JSSG360 construction with just multiple layers of braid/foil/etc that have no insulating layer?

 

Not having experimented myself to the extent of many posters here, I am wondering if it is the 360 construction or a case of building a thick enough wall?!  E.g., doing JSSG360 on the Gotham with its own multiple layers of shield seems to be a winner.

 

IIRC, someone commented that several layers of shielding tightly in contact with each other without a ground or insulation would constitute a Faraday cage.

 

What we need is a new “standard” of DC connectors so we can use thicker cables and tons of JSSG 360 all over the place. 

 

Same can be said for other cables. 

 

It seem to me now the plug / connector is the limiting factor. 

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R1200CL

R1200CL

Posted
Posted
1 hour ago, TheAttorney said:

 

Yes, it already exists and is made by Jaeger, as used in the Paul Hynes power supplies. This xlr-style connector is very bulky though, so it'll never catch on for the mainstream and won't fit onto those tiny Uptone boxes.

 

Well i was thinking even more advanced. Where you can connect each quad core as well as all the induvidual screens. So probably som sort of locking mechanism equal to Metz doing on ethernet plugs for creating the faraday cages. 

 

You would probably like to have dual or triple connections for creating the screen loops done by the connector. Requires some new thinking in connector design. 

Probably some modular stuff, where on module do screen and the next can fit whatever power to connect. AC or DC. 

 

It should probably be available in 2 or 3 sizes, so the technology also could be used on both AC and DC and even interconnect cables. 

 

I wonder if it’s possible to convince Furutech to create such a plug ?

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R1200CL

R1200CL

Posted
Posted
On 8/1/2018 at 5:38 PM, Superdad said:

 

Should JS expect any royalty checks? B|

 

You could sell your special Oyaide plugs to Ghent, and let John get some of the profit. Restrict the use to best sounding JSSG 360 cable. 

 

These pluggs probably open up to lower AWG as well. 

 

Of cause there is a minor problem here, since we can’t use those plugs with the present version of the USPCB. (And UltraRendu)

 

Maybe you have a update to share regards the USPCB ? ?

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R1200CL

R1200CL

Posted
Posted
On 8/3/2018 at 3:43 PM, Johnseye said:

 

It appears I'm unable to purchase directly from Oyaide's site.  They only list Japanese shipping locations.  I've reached out to Joe at the Lotus Group for more info.

 

Yes, $6 per piece is reasonable, but I suspect it costs them $1 to make.  The $15-20 you see on ebay shows the markup from Oyaide's retail cost.  I doubt they make anything on freight.  

 

How hard can it be to find a manufacturer willing to make let’s say 10.000 quality DC plugs in 2.1 mm and 2.5 mm with and without 90 degree that fits our needs and specifications ? 

 

I think it’s very easy, but not when it come to the financial part off the deal ?

 

Obviously the best would be to have Oyaide prosuce a bigger version (even huger than those Alex is buying).

 

What I don’t understand is the reluctance to do, if any. 

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R1200CL

R1200CL

Posted
Posted
25 minutes ago, d_elm said:

I use a right angle Oyaide DC connector when using the USPCB.

 

Yes, same here. If the USPCB was just a few mm extended i could use the Metz 90 degree ethernet connector. 

 

I’m hoping for an extended version of the USPCB.

 

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R1200CL

R1200CL

Posted
Posted
On 8/11/2018 at 12:09 AM, Johnseye said:

So you're suggesting to test with even longer length for more possible EMI/RF interference.  I could go to about 80 to my office.  It could be a worthwhile test.

 

Or you could just move everything out in the cloud with a virtual server. ?

 

This is where we most likely where we will be with Roon as an option in the future.

 

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R1200CL

R1200CL

Posted
Posted
On 8/10/2018 at 5:03 PM, BigGuy said:

More info on TI Shield...

 

Product is no longer available from either Percy or Gaven Industries.  Rep at Gaven indicates that replacement material is called Cu430 since TI too expensive to produce.  Apparently both were/are only available in 0.012" which will very likely be an issue to use as flexible shield?!  Regardless, I have asked for pricing and availability (Min qty) to us hobbyists. 

Stay tuned...

 

I have no idea what I’m talking about, but wouldn’t Active Shielding be the next big thing to the JSSG story.  Maybe John finally will get some royalties as well ?

He may have do some additional work tough.

 

http://www.ti.com/lit/an/snoa926a/snoa926a.pdf

 

 

https://en.m.wikipedia.org/wiki/Electromagnetic_shielding

 

“Equipment sometimes requires isolation from external magnetic fields. For static or slowly varying magnetic fields (below about 100 kHz) the Faraday shielding described above is ineffective. In these cases shields made of high magnetic permeability metal alloys can be used, such as sheets of permalloy and mu-metal[5][6] or with nanocrystalline grain structure ferromagnetic metal coatings.[7] These materials don't block the magnetic field, as with electric shielding, but rather draw the field into themselves, providing a path for the magnetic field linesaround the shielded volume. The best shape for magnetic shields is thus a closed container surrounding the shielded volume. The effectiveness of this type of shielding depends on the material's permeability, which generally drops off at both very low magnetic field strengths and at high field strengths where the material becomes saturated. So to achieve low residual fields, magnetic shields often consist of several enclosures one inside the other, each of which successively reduces the field inside it. 

 

Because of the above limitations of passive shielding, an alternative used with static or low-frequency fields is active shielding; using a field created by electromagnets to cancel the ambient field within a volume.[8]

 

 Solenoids and Helmholtz coils are types of coils that can be used for this purpose.

Additionally, superconducting materials can expel magnetic fields via the Meissner effect. “

 

A lot of references in the end of that Wikipedia article as well. 

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R1200CL

R1200CL

Posted
Posted
10 hours ago, beerandmusic said:

 

I too, want it to be spec compliant...which is why i actually prefer to see if i can find one...I am not sure the networx cable doesn't fit the bill?

 

If you’re patient, something will come from Uptone. 

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  • 3 weeks later...
R1200CL

R1200CL

Posted
Posted
7 hours ago, andervt said:

This could relate to the effort I have put into filtering and grounding on the AC supply, to the other electronics used, the Norwegian AC network beeing different built then most other countries.

 

Not all Norwegian has IT. Many now these days has TN. 

And 220 is considered better than 120 😀 (Ref Charles Hanson)

 

What efforts have you done if I can ask ?

(I use Isotek)

 

 

 

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R1200CL

R1200CL

Posted
Posted
9 hours ago, drjimwillie said:

I think Alex suggested using a cable without a metal head, to prevent the possibility of magnetic coupling.  I use the Ghent with the metal Metz head.  What the best quality, non-metal Ethernet connector, please?  Maybe Ghent can use this head with the JSSG 360?

 

Ghent is ‘’perfect’’. Reason for Alex to say that was because most ethernet cables with metal plug follow the standard, and hence has the shield connected to the plug.

 

We designed the Gent ethernet cable not to have the shield connected to the plug. Reason to use metal plug was to hopefully add some shielding to the last mm. 

 

And Gent is using JSSG360. 

 

As an example Vodka use same principle, and not connecting the plugs to the shield. 

 

The only thing missing in that design is to use the Belden glued twisted pair cables. And add JSSG360. Which would made the cable very stiff. 

You could also use the special designed Belden plug.

 

Blue Jeans use a special Belden glued twisted pair cable made for them. 

 

 

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  • 5 weeks later...
R1200CL

R1200CL

Posted
Posted
11 hours ago, elan120 said:

The new HQPlayer 4.0 has been out for few days already, and I wonder how many people have tried it.  I have been using it to upsample both redbook and hi-res to DSD512 with just poly-sinc-ext2 and poly-sinc-xtr-lp filters for now, and the improvement over version 3.x is just "jaw dropping" good.  Highly recommended.

 

The filters are all the same in both versions is my understanding. So also in the embedded which has been version 4 for some time now. 

 

Maybe you changed your hardware ? 😀

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  • 2 weeks later...
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R1200CL

R1200CL

Posted
  • Popular Post
Posted
2 hours ago, happydance said:

Do I just need a Mic

 

Yes. (And the PC of cause)

 

Most people do prefer a tripod as well, since a handheld mic most likely will destroy the measurements. 

 

https://www.minidsp.com/products/acoustic-measurement/umik-1

 

You may find this interesting:

https://community.roonlabs.com/t/a-guide-how-to-do-room-correction-and-use-it-in-roon/23800

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