Guest rmpfyf Posted July 16, 2018 Share Posted July 16, 2018 In the spirit of isthereanyfriggndifference, I've managed to acquire some CAT8 Ethernet cable. This stuff is thick. Has anyone else had a play? It's supposed to have a good 20+dB on CAT6. Link to comment Share on other sites More sharing options...
Upfront Posted July 16, 2018 Share Posted July 16, 2018 In the spirit of isthereanyfriggndifference, I've managed to acquire some CAT8 Ethernet cable. This stuff is thick. Has anyone else had a play? It's supposed to have a good 20+dB on CAT6.It's more about information transfer. Cat6 is good for 1gig, cat6a 10gig. Cat8 (if genuine and terminated correctly) 40gig. 1 Link to comment Share on other sites More sharing options...
Guest rmpfyf Posted July 16, 2018 Share Posted July 16, 2018 1 minute ago, Upfront said: It's more about information transfer. Cat6 is good for 1gig, cat6a 10gig. Cat8 (if genuine and terminated correctly) 40gig. It's genuine. More interested in the shielding properties. Link to comment Share on other sites More sharing options...
Upfront Posted July 16, 2018 Share Posted July 16, 2018 It's genuine. More interested in the shielding properties. Shielded/screened cable? Or are you talking about noise rejection capabilities? Need more info. 1 Link to comment Share on other sites More sharing options...
davewantsmoore Posted July 16, 2018 Share Posted July 16, 2018 1 hour ago, rmpfyf said: It's supposed to have a good 20+dB on CAT6. 20dB of what? All the measurements I've seen are 1.6ghz and higher, which doesn't seem relevant. Link to comment Share on other sites More sharing options...
rand129678 Posted July 16, 2018 Share Posted July 16, 2018 2 hours ago, rmpfyf said: More interested in the shielding properties If you use plastic connectors to avoid ground / leakage loop and use the Swenson shielding technique (using silicone wire) it could/should be good. Supra cable? Link to comment Share on other sites More sharing options...
Guest rmpfyf Posted July 16, 2018 Share Posted July 16, 2018 2 hours ago, Upfront said: Shielded/screened cable? Or are you talking about noise rejection capabilities? Need more info. Shielded pairs and the bundle is screened. 1 hour ago, davewantsmoore said: 20dB of what? All the measurements I've seen are 1.6ghz and higher, which doesn't seem relevant. I was counting on this getting you out of bed it's actually >20dB better than UTP at 50Mhz, gets up to 35dB at some freqs. These data are for common EMC tests. 51 minutes ago, Music2496 said: If you use plastic connectors to avoid ground / leakage loop and use the Swenson shielding technique (using silicone wire) it could/should be good. Supra cable? Connectors are plastic; there's at least a screen (no idea how joined and though I've got two I'm not keen to pull them apart). Cables are Elecom, picked them up in Akihabara a few days ago. Link to comment Share on other sites More sharing options...
davewantsmoore Posted July 16, 2018 Share Posted July 16, 2018 1 hour ago, rmpfyf said: Akihabara Ah, such a fun time! 1 hour ago, rmpfyf said: 50Mhz I assume that's for crosstalk? ... as opposed to radiating outside the bundle? Anyways, 35dB is large .... do you have a hypothesis(es) for how it's important? Link to comment Share on other sites More sharing options...
Upfront Posted July 16, 2018 Share Posted July 16, 2018 Ethernet cables do make a difference. Figures aside.@chanh and I did some basic testing many years ago now. But this was a simple set up with no horizontal cabling involved. Purely patch leads. Is it a preterminated patch lead or unterminated cable? What are you planning to do with it? Link to comment Share on other sites More sharing options...
Neo Posted July 16, 2018 Share Posted July 16, 2018 Cat8 , the powers that be haven’t settled on a universally accepted specs of cat7. Neo Link to comment Share on other sites More sharing options...
Neo Posted July 16, 2018 Share Posted July 16, 2018 (edited) 1 hour ago, Upfront said: Ethernet cables do make a difference Agree 100% from experience with that statement Neo Edited July 16, 2018 by Neo Link to comment Share on other sites More sharing options...
Upfront Posted July 16, 2018 Share Posted July 16, 2018 Cat8 [emoji15], the powers that be haven’t settled on a universally accepted specs of cat7. NeoThere has been a lot of rubbish made with the label of cat7/cat7a. So I think the only way for them to get past it was to officially skip it and go straight to cat8. Testers are already available and the standard required is set. Link to comment Share on other sites More sharing options...
Upfront Posted July 16, 2018 Share Posted July 16, 2018 Agree 100% from experience with that statement NeoJust to clarify, the most expensive we tried that day wasn't the best. But all quality commercial grade cables used. No Ebay patch leads. Link to comment Share on other sites More sharing options...
Neo Posted July 16, 2018 Share Posted July 16, 2018 Cool, was not aware. Link to comment Share on other sites More sharing options...
AccuTidal Posted July 16, 2018 Share Posted July 16, 2018 Why would an Ethernet cable influencing/impacting the sonic signature?!?! I wonder...! After all - the cable is nothing but transfers Binary electrical pulses, 1010101001? Complete nonsense from a sparky's perspective. Never the less - from human ears, it appeared not all Ethernet cables are made equal. Some sound better then others. After trailing so many...., I have set on a pair of these Japanese made Ethernet cables. http://www.aim-ele.co.jp/avd/english/products/na7/ I think they are approx $1000 each. 1 Link to comment Share on other sites More sharing options...
Neo Posted July 16, 2018 Share Posted July 16, 2018 It’s all to do with jitter, timing errors that’s what we hear and perceive as good sound or bad. Neo Link to comment Share on other sites More sharing options...
Upfront Posted July 16, 2018 Share Posted July 16, 2018 Why would an Ethernet cable influencing/impacting the sonic signature?!?! I wonder...! After all - the cable is nothing but transfers Binary electrical pulses, 1010101001? Complete nonsense from a sparky's perspective. Never the less - from human ears, it appeared not all Ethernet cables are made equal. Some sound better then others. After trailing so many...., I have set on a pair of these Japanese made Ethernet cables. http://www.aim-ele.co.jp/avd/english/products/na7/ I think they are approx $1000 each. Terminated with Telegaertner cat6a plugs. Looks interesting mate. Was wondering what you ended up with. Link to comment Share on other sites More sharing options...
Neo Posted July 16, 2018 Share Posted July 16, 2018 (edited) Cables4u cat6a found them particularly good and not dear at all. Compared to comsol or belkin, like chalk and cheese. Although go to max 10m Neo Edited July 16, 2018 by Neo Link to comment Share on other sites More sharing options...
Guest rmpfyf Posted July 16, 2018 Share Posted July 16, 2018 3 hours ago, davewantsmoore said: Ah, such a fun time! Absolutely, though finding places that did good audio stuff is challenging (forget the guides, use Google translate, speak to locals and be respectful, just get happily lost in it all). Came back with a few valves - prices aren't any cheaper over there, though there's some good stuff that's hard to find elsewhere. 3 hours ago, davewantsmoore said: I assume that's for crosstalk? ... as opposed to radiating outside the bundle? No idea rating is done to CISPR 14-1, though could be applied any which way I'd guess. 3 hours ago, davewantsmoore said: Anyways, 35dB is large .... do you have a hypothesis(es) for how it's important? My hypothesis: what the cables cost me is the least I could spend on a 'let's have a little fun' mission given all else on offer, and containing my 'I could try this!' impulses to minimum spend is super important In all seriousness the HTPC is below the TV (plasma), there's a lot going on in terms of EMI. It'd be a small thing but worth a try. That last leg is on CAT6a at the moment and it was a nice stepup from CAT5e, though nothing earth-shattering. There's a LAN isolator in the mix which does more. Link to comment Share on other sites More sharing options...
Guest rmpfyf Posted July 16, 2018 Share Posted July 16, 2018 2 hours ago, Upfront said: Ethernet cables do make a difference. Figures aside.@chanh and I did some basic testing many years ago now. But this was a simple set up with no horizontal cabling involved. Purely patch leads. Is it a preterminated patch lead or unterminated cable? What are you planning to do with it? Patch, have 1m and 2m (there was nothing shorter for sale at the time). Will try it out of the wall and into my HTPC (suspect could improve things) and out of my USB>I2S box and into my DAC (suspect will not improve things). Link to comment Share on other sites More sharing options...
Guest rmpfyf Posted July 16, 2018 Share Posted July 16, 2018 20 minutes ago, Neo said: It’s all to do with jitter, timing errors that’s what we hear and perceive as good sound or bad. Neo Would think with EMI it's pure error reduction, then packet jitter - though the advantages here are small compared to initiatives to better OS jitter directly regards network (dedicated subnet, MTU tuning, network resource management, etc) Cheapest way of course is to just shutdown your network interface during playback Link to comment Share on other sites More sharing options...
Upfront Posted July 16, 2018 Share Posted July 16, 2018 Patch, have 1m and 2m (there was nothing shorter for sale at the time). Will try it out of the wall and into my HTPC (suspect could improve things) and out of my USB>I2S box and into my DAC (suspect will not improve things). Well worth trying mate. Especially if the price is right. Let us know what you think. Link to comment Share on other sites More sharing options...
Neo Posted July 16, 2018 Share Posted July 16, 2018 It’s the actual playback through the cable that can introduce jitter either from the cable construction or the receiver/sender on either device Neo Link to comment Share on other sites More sharing options...
davewantsmoore Posted July 16, 2018 Share Posted July 16, 2018 38 minutes ago, Neo said: Cat8 , the powers that be haven’t settled on a universally accepted specs of cat7. Neo Nah. Cat7 was agreed in 2002 .... it's just that most people are confused by it, because it doesn't allow for the standard RJ45 type connectors that most people use. ... (Much) later on 6A was made which supported about the same speeds, on the RJ45 connector. Cat 8 is needed if you want to run 40gig with typical plugs/sockets.... a while ago I would have said "but who wants to do that" .... I guess the time is now. 1 Link to comment Share on other sites More sharing options...
davewantsmoore Posted July 16, 2018 Share Posted July 16, 2018 (edited) <whoops something went wrong with this post> Edited July 16, 2018 by davewantsmoore Link to comment Share on other sites More sharing options...
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