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In Reply to: RE: From another thread... posted by Ryelands on January 26, 2017 at 06:42:13
Hi there.
To me at least it's not new that cutting certain pairs made a difference.
I think we discussed it around 5 years back.
I recently cut a broken rather long Meicord into pieces and terminated these also with Telegaernter MP8s. The MP8s are quite nice.
I didn't run any ethernet cable comparisons lately.
***
And nowadays I run GBIT LAN on my PI3. Actually I achieve 300MBit/s with a 10Euro USB3 ethernet dongle which comes with potentially better ethernet chip. The handling became much snappier and my files are loaded much faster into RAM.
I also applied an idle sitting AQ Jitterbug to that ethernet dongle for having some filtering in place.
And. Since I had some of Sbooster filters around, I hooked these up
to my Cisco ethernet-hub which sits right next to my Pi and to my FritzBox power supplies on the other end.
All that sounds extremely clean to me.
I'm wondering if LAN isolators are worth it -- if you go the UTP route.
I heard stories that people didn't notice any differences. That's why I left it alone.
I didn't jump on the fiber train, since the known devices have no hubs at the end.
All that - A never ending story.
Enjoy.
Follow Ups:
To me at least it's not new that cutting certain pairs made a difference.
Interesting - thanks for the feedback and for the RJ45> USB idea.
I didn't do any structured LAN cable comparisons, just played about with what I had to hand and pinched other folks' ideas. The Telegartner tip came from the CA forum; I genuniely thought the snippie bit was my idea but maybe I saw it somewhere. Who cares? It seems to work.
I'm wondering if LAN isolators are worth it if you go the UTP route. I heard stories that people didn't notice any differences.
I certainly hear the difference even with vasectomied LAN cables and an LPS-1. I use two, one either side of a pair of hubs sited after the media converter. I'd love to use them elsewhere but the loss of SQ is immediately apparent. H/W Quickie Piccie of the setup (moved to a desk, not on its rack).
I didn't jump on the fiber train, since the known devices have no hubs . . .
For me, the sound is definitely better with the fibre link, Zytek hubs and EMO isolators though the latter probably make less difference than the hubs. The LPS-1 was a big step up from linear PSUs.
If you were to say "you're mad", I'd probably agree. If you were then to say "there must be an easier way to do it", I'd definitely agree but, so far, I've not found it.
In any case, there comes a point where you write off the cost and effort and just play music while reminding oneself that the setup cost less than many fancy LAN cables and would, I suspect, do well in comparison.
Just wait till I've optimised it . . .
D
From the inmate who 'doesn't' talk optimisation!
Your cable looks like mine. I did put a nice black jacket on to make it look serious, audiophile and - most important - pricey. ;)I do find your DC wires quite a bit "exposed".
And you just use the 100MBIT fiber. OhhKaay.I do agree. The HUB itself makes quite a difference.
I mean a HUB "reclocks, regenerates, rebalances, refilters, rebuffers, resignals, re...whatsoever" the stream.
(Thorsten are u listening??? The world needs an iNurifier (N for network) ;) )****
These EMU filters just cut the ground/shield. That you'll have with a UTP cable. Or u just don't connect the shield to the MP8.
And the EMU will cope with surges/spikes. What more at 129$?As explained on the Meicord page. The jacks/plugs do cause trouble on their own. You introduce two more of them with the filter in place. Hmmh.
Nope. I won't even try one of these devices.
****
I'm not a fan of the LPS-1 for several reasons.
1. It's much too weak.
2. It doesn't really act like a battery with the LDO at its output.
3. I do also consider that LDO overkill inside a pre-regulation stage
4. People don't actually know what's causing the experienced improvements!
Sometimes just reviewing and rearranging your grounding scheme does more then a DAC upgrade or a new PS.
5. I really like your heatsink on top of it.
6. Let's not talk about the price.
Enjoy.
Edits: 01/31/17
I did put a nice black jacket on to make it look serious, audiophile and - most important - pricey. ;).
Ah. I removed a nice lilac-coloured jacket from the smaller leads so I could make shorter connections with tighter bends. The audio-macho look came with. NB that the pairs are slightly separated and cross at right angles. You could be right about the DC wiring but then you didn't see the first hookup . . . what would you suggest?
The 10/100MBit media converters are half the price of faster ones. The Zytek switches (as recommended on a CA thread) are also 10/100MBit only and do actually sound slightly better than the little gigabit Netgear boxes I used while experimenting. They cost slightly more so they must be better.
I agree that the LPS-1 is expensive given its low output ( < 1.2 amps) but supercapacitors are an emerging technology at least in audio. They are IMHO a significant breakthrough whatever their weaknesses.
Sometimes just reviewing and rearranging your grounding scheme does more than a DAC upgrade or a new PS.
The setup shown in the pic (and, of course, the other end) took me several months to get 'right' but was such an improvement sonically over the Netgear/linear PS as suggested on your blog a few years back that I still can't quite believe it.
Yes, easily as good as a new DAC. Moving data from a remote server over optic fibre can work very well but what I learned was that you do have to do it right. Skip the regen razzamataz and you are likely to be disappointed.
++++
These EMU filters just cut the ground/shield. That you'll have with a UTP cable. Or u just don't connect the shield to the MP8. And the EMU will cope with surges/spikes.
Not so - see datasheet. They decouple data pairs with transformers as well as cut any shield. They were designed for the medical sector where lawyers seem to like protecting patients from the mains. The Baaske may also use transformers - I don't know - but the EMOs definitely do. Whether they're worth the money is a fair question (I bought mine well before I got into the fibre thing) but I know that the difference they make is readily audible even in UTP links.
As explained on the Meicord page. The jacks/plugs do cause trouble on their own. You introduce two more of them with the filter in place
I'm not sure that that's what the Meicord papers say. See also the BJ link. Both suggest that few LAN cables come even close to spec and that the biggest problem is typically the plugs. They don't seem to claim that connectors inevitably degrade the signal to below spec, only that designing quality plugs is not trivial. Obviously, any plug degrades to a degree but the suggestion that they do so to an extent that inevitably makes in-line filters useless is not supported by data or, in my case, experience.
I tried a couple of the Telegartner connectors with Excel cable and found they sounded as good as the Meicord products or, post-vasectomy, better. Both are way better than Amazonic stock but a one-metre Telegartner/Excel cable still only costs about $10, the Meicord about ten times that.
BTW, AQ LAN cables use Telegartner plugs with, I suspect, a small markup. IME, no need for screened Telegartner plugs. Both types work fine on UTP but the screened, though slightly more robust, are harder to rework.
We compared supercaps with other quality caps.
I can't confirm that these are superior in general.
It depends on the application.
They IMO work better without that LDO behind it.
Then you also won't suffer power limitations.
Each ethernet jack has a decoupling transformer inside!!
They are all isolated.
We compared supercaps with other quality caps.
"We" being? Any details, links?
Each ethernet jack has a decoupling transformer inside!!
Is that right? And there was me thinking that the regs for medical equipment might just be a bit more stringent than those for consumer kit. Silly me.
So the differences I hear are all in my imagination? Funny old stuff, psychology.
D
We did some tests at a friends place.
"So the differences I hear are all in my imagination"
Not at all. You change the physics. You change the sound.
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