ISO Regen performance Improvement Cheap!

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@charlesphoto - using the pic below (from another post) is it possible to please to specify the +ve /-ve wires by pin #s, and also the length of your cable?

Thanks

 

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23 minutes ago, charlesphoto said:

Still sitting here listening, jaw dropped. I would just go for a length of Supra CAT8 ($9.00 per meter) and some barrel screw connectors and forget about all the injector dongle b.s. Definitely found the missing link for my system. Something was more right with the cheap cat 7 vs the Canare starquad but still off. The Supra hits on all cylinders. 

I ordered some! If I understand this right , you are using all the twisted pairs but the shields are floating (not connected) on either end: 1,2 + 7,8 for +ve and the rest for -ve?

The cable is 1 meter long?

Thanks.

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Supra8 (+JSSG) 1ft long wired brn/orn pairs +ve, rest -ve as a DC cable, Uptone LPS-1.2 to Sonore ultraRendu:

 

I am impressed with it as it slightly edges out my silver plated custom cable - it as if the music has been turned up a notch- better dynamic range?  lower noise floor? I don't know, but in either case it is an excellent tweak for little money!

Have fun!

b.

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I modified the PoE adapter cable to be able to utilize all the 8 wires for power (1,2,4,5: +ve, 3,6,7.8: -ve). This has improved the low end performance of the Ugreen CAT7 (3ft) cable. I find it to be the equal or better (perhaps more relaxed sound) than the bulk Supra CAT8 +JSSG (1ft).

 

The adapters I modified are these:

https://www.amazon.ca/gp/product/B01H7IF624/ref=oh_aui_detailpage_o02_s00?ie=UTF8&psc=1

 

The UGREEN

https://www.amazon.ca/gp/product/B00QV1F1C4/ref=oh_aui_detailpage_o00_s00?ie=UTF8&psc=1

 

Thank you very much @rb2013 for this tip!

 

 

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UGREEN (flat)  description mentions 26AWG, as does the IBRA (flat). FWIW - the construction looks similar and shows a drain wire (GND)  inside the shield of each twisted pair for the flat versions (no overall shield). This is different from the round cable where one drain wire and an overall shield in contact with the twisted pair shields is shown.

 

spec:

https://www.ugreen.com/product/1322-en.html#ad-image-6

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@totoxio - The CAT/DC cables are a bit of a puzzle! Like you say one can notice an apparent increase in volume. In my setup (LPS1.2>ultraRendu) and with the few cables I have tried, the Supra CAT8+JSSG (1ft, round) is the king of this phenomena! Next is the flat braided Tera Grand CAT7 (6ft). The UGREEN flat CAT7 (3ft) is the  least 'volume changer' together with the Tera Grand CAT7 round (3ft)! A lot going on here - and this is when I compare to my custom 'near star quad' teflon/silver plated OFC 2x22AWG per leg! IMO the Supra, flat UGREEN & flat braided Tera Grand, edge it in performance.

FWIW - I feel the 'flat' (Tera Grand) cable I have to be better than the round one at this DC thing but this is not a scientifically studied subject by me. I should at least initially standardize the length at 3ft for the different CAT cables and see what 'audible' conclusions I come up with.

 

edit- I should mention that I use all the twisted pairs for power. I use the modified adapter as shown in my earlier post to achieve this when applicable.

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I guess for low power devices (<1A) the wire diameter is not such a big factor in short lengths and where a little voltage drop can be tolerated? As  an example: the Uptone LPS-1.2 to Sonore uRendu- I have used 15.5 AWG (1.31mm^2) 10in long Cardas and the Tera Grand flat braided CAT7 cable 4x30AWG (.20 mm^2) 2M long per leg on the other extreme. I believe the CAT7 edges it!

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The Tera Grand is a smaller diameter wire from what I gather from the web, 30AWG vs 26AWG for the UGREEN. This one has a braided outer jacket, is narrower but a bit thicker overall than the UGREEN. I do not know about the insulation or  if there are other internal differences. Glad you are enjoying your new purchase!

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It is possible that  residual differential AC noise on the DC +ve is further reduced (filtered) via crosstalk to -ve pairs via coupling of the individual shields. Somewhat demo'd by this little experiment (no affiliation).

https://dcc.ligo.org/public/0060/T1100264/001/Cable Crosstalk Test_v1.pdf

 

Alpha Wire 2214C

http://www.alphawire.com/Products/Cable/Alpha-Essentials/Communication-and-Control-Cable/2214C?popup=pdf

Alpha Wire 6054C

http://www.alphawire.com/Products/Cable/Alpha-Essentials/Communication-and-Control-Cable/6054C?popup=pdf

 

 

Some folks report better SQ by simply inserting the CAT7/8 into the existing wiring, thus suggesting a resulting noise reduction.

 

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@tims-I have that flat UGREEN CAT7 in a 1 metre length. I got it from Amazon. I would recommend it highly. There is a round version as well which I do not have. @totoxio might chime in as he has both versions. I do have Tera Grand CAT7 though in both round and flat (braided jacket) and much prefer the latter for the DC usage.

 

edit- I should mention that I use these from the Uptone LPS-1.2 to the Sonore ultraRendu, and use all the twisted pairs for power (brn/orn +ve, blu/grn -ve). Of the Tera Grand flat cables I have I prefer the 2M to the 1M long in this application.

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@genjamon - Does your UGREEN/PoE adapter combo use the two or the four twisted pairs for power? I take it the Supra is using the four. I am wondering if it is really apples & apples you are comparing?

If it is using the PoE 2 pairs and you would like to try all the 4, you can have a look at my post on page 11 showing the mod to the adapter that achieves this without cutting the cable.

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Well, they are rated in the CAT DC PoE spec (something like 57 V max & 15.4 W?). If you double up the pairs per leg you could possibly double the current but you want to avoid heat build up. I am using a Supra CAT7/8 at 7.5 volts & .5A, 2A max. Some CAT7s use 30AWG wires (e.g. Tera Grand flat)!

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3 hours ago, flkin said:

 

PoE's have different wiring configurations. The Amazon 4 piece set I purchased had wires 7 and 8 for negative and 4 and 5 for positive DC.

 

https://www.amazon.com/gp/aw/d/B01LX1WL2Z?psc=1&ref=yo_pop_mb_pd_title

 

This is different from the pictures are the beginning of this thread. 

That is what the line diag. on page 1 shows. The pcb cut-away on page 1 has no pin #s but you can compare the layout to page 11 pics, which shows pin #s

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@genjamon  - Understood. Enjoy!

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The Gotham GAC-4/1 UltraPro (star quad) microphone cable (mentioned by @lmitche in  previous posts)

 

I got a 1m length  to try out as a DC cable between the LPS-1.2 and uR. This cable has multiple shields and is hefty but  flexible. I tried it with the individual wire shields connected together (both ends) but 'floating' from the overall external ones. They do not quite float as there is another double side aluminum coated thin layer  between the inner and outer,  about 1.5Kohms between them on the DMM. In this configuration the cable allowed a 'soft focus, tube-y'  sound which was very pleasant to listen to. Very easy on the ear, seemed harmonically rich with full extension on both frequency extremes! This could benefit a 'hard/edgy' sounding system.

When the individual shields are connected to the outer ones the resulting sound became closer to that of the CAT7/8 in the same application (all twisted pairs in use as per my earlier posts) -sharper focus, clearer backgrounds and a good indication of a lower noise floor. A great cable in this application, however the instrument separation/definition within the 'sound stage' did not quite match  the 1M UGREEN CAT7 flat I compared to!

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@marce- I wish I could answer that with some scientific explanation, but in truth- I don't know. The effect is easy to hear though n my setup. I am using the dc cable between the Uptone LPS-1.2 and the Sonore UltraRendu which feeds a DAC. I can only speculate that there is some residual ac leakage or EMI riding on the DC that could reach the DAC or that the current consumption is  fluctuating in some way such that the cable geometry/design comes into play.

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1 hour ago, lmitche said:

Nice report! Well done. Just curious, have you tried it with an ISO Regen?

I have it on the ISO Regen currently, sharing a split LPS 1.2 feed with the uR. The setup sounds sweet. I will switch it out in a few days and note any differences. PC>Iso Regen>Anker USB/Ethernet>uR.

Thanks.

ATB.

b

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24 minutes ago, jabbr said:

 

That is a tacit suggestion that the LPS1.2 is designed in an incompetent fashion which I don't believe. Think about what you are speculating.

really?

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43 minutes ago, marce said:

Sandy I ask for explanations of what is going on, I don't blindly follow the crowd, there is a difference.

There is also the fact that I don't see magic cables (or claims) other than on these sort of sites or audio cable manufacturers often totally BS marketing information or white papers, one has to wonder why.

Nothing wrong with being the skeptic but I wish you could try it and listen for yourself. You might or might not hear any differences. If you ever do please do share your experiences and any science you might think about!

ATB.

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2 hours ago, sandyk said:

 

 Lotsa luck trying to terminate that cable into 5.5  x 2.1mm plug !

I am using the plugs with the screw terminals for the evaluation.

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@jabbr. My DIY DC cables are 10-12 inches long which is as short as I can go. I only use the longer ones in the min length they are sold for easy comparisons. The LPS-1.2 & Iso Regen which I own as well as the LPS-1/Regen are great products that I love and enjoy but why would one assume they are perfect under all circumstance? As for tech, measure/correlate, no I am retired several years!

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1 hour ago, BigGuy said:

Not sure if you are up to speed but the screw-type terminal plugs are wired internally with ~30AWG wire which has very low amperage rating.

thanks - I think they are okay for evaluation purposes and this usage.

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1 hour ago, marce said:

Over the years I have tried all this stuff as well as measurements in the past, funnily when I stopped trusting my ears my system improved....

By the same token bring some explanation and measurements to the discussion to prove to yourself and others that the sound changes are all in the mind.....

As said I don't see magic cables in other areas of electronics only in Audiophile audio...

And yes cable differences are measurable, many are far below the threshold of hearing and to have the effects many report the differences will be easily measured.?

All in jest right? What instruments did you use with the system??

Have fun.

ATB

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1 hour ago, Speedskater said:

Any product that is sensitive to the DC supply cord is a poorly designed product. Industrial audio Consultant Dick Pierce pointed that out two decades ago, about expensive hi-fi digital products that were sensitive to digital interconnect cables.

Don't you think a product should be evaluated against its design goals? I am sure you can see/hear why an industrial power supply might have different ones from an audiophile product for a home environment. I sure do not want a military/industrial specification applied to any of my super sounding audio products -not only unnecessary but would add silly cost and likely sound worse- a self defeating exercise?

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On 6/13/2018 at 3:14 PM, Cornan said:

Next up the dual Supra DAC with drain loop.

 

 

 

Boy what a releif from the Puresonic tripple ccc cable with Oyiade plugs in this spot! The gates of heaven was opened again. A breath of fresh air injected into everything. More music glow. More crisp. More presence. More air. More 3D & 4D but with singer in front. Fibers in loads. Wow! This got to be the best f***ing DC cable that I’ve tried ever! ?

Thanks for this tip - I have no access to Supra DAC but have sort of similar cables lying around. I had some left over tonearm cable (1ft) - the Van Den Hul D-502 twin hybrid (carbon/25.4 AWG SPC). With your 'winning' configuration I am getting a very sweet PRaT'y sound when I use it between LPS-1.2 & uR! I cannot say whether the sound  image is as clear as the CAT7/8 but the tones are better (smoother, much like the Gotham). The Cornan cable config = 'High inductance in Faraday cage'? Very interesting.

https://www.vandenhul.com/product/d-502-hybrid-halogen-free/

the single bulk

https://www.ebay.ca/itm/VAN-DEN-HUL-M-C-D-501-HYBRID-HIGH-QUALITY-TONEARM-CABLE-METERWARE-PER-1-0M/271953916206?hash=item3f51b7712e:g:md4AAOSwry1aQQJk