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Post by clk230 on Nov 2, 2008 17:45:32 GMT
this cable looked like a disaster waiting to happen to me ,thats why i asked so it could be pointed out to others not to try.
only a suggestion but maybe remove such a dagerous post
not mikes one the ct100 one
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Deleted
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Post by Deleted on Nov 2, 2008 21:36:27 GMT
clk230
I have added a warning to the original post.
SandyK
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leo
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Post by leo on Nov 3, 2008 9:26:18 GMT
I'd certainly never advise using co-ax as a mains cable but looking at the design wouldn't it be that this stuff uses solid core centre compared to the usual stranded mains cable thats making the difference in sound rather than the screening?
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Deleted
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Post by Deleted on Nov 3, 2008 9:35:05 GMT
Leo
I would imagine that at 50/60HZ, that it would be more the total cross sectional area of the copper that mattered ? I think the main benefit of stranded mains cable would that it would be flexible.
Alex
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leo
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Post by leo on Nov 3, 2008 9:46:13 GMT
Trying to rule out other things that may have made the sound difference  He could try a length of solid core twin and earth to compare Multistrand always been good enough for me, as already stated its easier to handle even the thicker stuff I tend to use |
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leo
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Post by leo on Nov 3, 2008 9:49:29 GMT
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Post by PinkFloyd on Nov 3, 2008 17:01:24 GMT
Don auditioning his new coax mains cable   |
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Deleted
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Post by Deleted on Nov 3, 2008 19:40:37 GMT
Mike THAT photo was taken just before. You apparently didn't find the photo with the eyes bulging out of his head too! Alex Leo The cable shown in the link would appear to be suitable for running behind an entertainment unit to a main power distribution board. It can't of course clean up rubbish that was already present at the original power point, but would help prevent further radiation into nearby signal cables. At 16mm outside diameter, it would be difficult to use for most other gear, and there is the need for special plugs/sockets. Alex See also : www.yarboaudiophile.com/english/products.php?laywer1=5437 |
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leo
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Post by leo on Nov 4, 2008 18:06:34 GMT
Mike THAT photo was taken just before. You apparently didn't find the photo with the eyes bulging out of his head too! Alex Leo The cable shown in the link would appear to be suitable for running behind an entertainment unit to a main power distribution board. It can't of course clean up rubbish that was already present at the original power point, but would help prevent further radiation into nearby signal cables. At 16mm outside diameter, it would be difficult to use for most other gear, and there is the need for special plugs/sockets. Alex See also : www.yarboaudiophile.com/english/products.php?laywer1=5437Crazy isn't it? fancy arsed aluminum IEC plugs etc,I'm more than happy to be using my wanky three core stranded stuff with MK plugs |
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Nigel
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Post by Nigel on Nov 4, 2008 21:49:05 GMT
I foolishly used satellite coaxial cable for a mains lead for my cd player for years. Thought it was pretty good but now appreciate how dangerous it was. I now use a braided 6mm three core based on one of Roy K. Riches "Beasts."
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Post by Deleted on Nov 4, 2008 23:47:01 GMT
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rickcr42
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Post by rickcr42 on Nov 5, 2008 2:52:47 GMT
 Think "Tarkus" with some serious VA delivery  |
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Post by guadixman on Nov 6, 2008 12:33:07 GMT
Graham Slee,
there was a thread on Head-fi about cables/I/Cs and someone stated that they 'did'nt trust their own ears' and only bought what their measuring instruments showed 'measured the best'.
So I asked on the thread ' who listens to the music in your home - you or the measuring instruments' - he never came back to answer that one.
If my ears/brain combo tells me that I hear a real improvement then I accept that as 'real'. If I hear something that does'nt sound 'right' then I accept that as well. All the science says that there should be no improvement in sound from changing mains cables from one design to another and I was one who 'believed' that for years and then I actually experimented and my actual results did'nt support that at all, the reverse.
Since then I am aware when I encounter 'received wisdom', sometimes it pans out and sometimes it does'nt.
As to sat. cable being dangerous - take a look at any normal mains cable unless you are using really high voltages, conductors of 1.25mm are more than adequate. The stranded mil. spec. cable I bought from the USA is rated @ 1200V and is nowhere near 1.25mm.
I did forget to say in my original post that I do not connect the double sheilds but leave them floating, the earth connection is the solid core 1.25mm conductor, is that more than adequate, in my opinion yes.
I intend to build just such a mains cable for my power amp and will beef up the wiring by using the air channels for extra solid core wire.
Not flexible - yes it is, no problems at all there.
Lets not forget also that most if not all CDPs/tuners etc. only have 2 core wiring and the wiring used is nothing like 1mm or 1.25mm so how is it dangerous to use sat. cable?
Having done so many experiments with sheilded cables, I came to accept that connected sheilds seriously affected the sound and not in a very nice way and then I read somewhere about 'floating sheilds' - tried it and was surprised at just how open the sound was - any interference is trapped in the double sheilding and cannot be passed onto/into the signal path.
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Post by Deleted on Nov 6, 2008 20:26:33 GMT
guadixman
Your choice of cabling does not meet IEC safety regulations , which are there for a damn good reason.
If you want to ignore the safety regulations and use cable that was not designed to be flexed, or pass AC mains voltages, as distinct from a short term 1200V static DC test, by all means do so.
But do not encourage others to flout these regulations, which are there to protect not only the owner of the equipment, but family members and others.
DO NOT ATTEMPT TO CONSTRUCT THE CABLES DESCRIBED IN THE PREVIOUS POST. THEY DO NOT MEET I.E.C. SAFETY REQUIREMENTS.
SandyK
Moderator
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Post by gns on Nov 6, 2008 20:58:08 GMT
... All the science says that there should be no improvement in sound from changing mains cables from one design to another... Yeah, well don't blame me for that science! Of course there's going to be a sodding difference! You must start reading about propper science and not the bullsh*t science you've been exposed to! And I know it's bl**dy hard to know what is propper science and what is bullsh*t science - what do you think I've been trying to do here since I joined in 2006? As I posted on another thread earlier: "and now nothing will be restrained from them, which they have imagined to do" - meaning the bullsh*t scientists, etcetera, etcetera... But there has to be a safe way of doing things or you'll end up being part of the "all evil continually" brigade - and because I care I don't want you to end up there! |
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Post by PinkFloyd on Nov 6, 2008 21:51:55 GMT
guadixman, just because it isn't IEC approved for the purpose you are using it for doesn't necessarily mean it's wrong and doesn't necessarily mean it poses a danger. It means the cable you are using is intended for another purpose and not mains use. You are probably right, it will do the job but, in the eyes of the law, it won't be kosher.... if you were to start producing these then some little hitler quoting "regulations" would come down on you like a ton of bricks and do his best to fine you in a court of law. A sandyK says, best to stick to "legal" when it comes to making things for others but what you do, personally, is totally up to you.... if you want to electrocute yourself then so be it, who am I to argue with you? Hell......... LEAD is now illegal (ROHS) but that doesn't mean that LEAD doesn't do the best job does it? ;D Just remember this guy: |
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Post by canjunkie on Nov 6, 2008 22:50:26 GMT
There is a simple way to scientific measure the difference between mains cables - try simple resistance and capacitance measurements with a decent DMM - you might find the results quite surprising. The safety regs, whilst sometimes being a bit OTT, do not just apply to the conductor. Compare the thickness of the outer insulation on satellite cable to that of even the lowest rated 2 core mains flex. OK, so if the insulator remains intact it shouldn't make much of a difference but the sat cable is meant to be installed and left alone. Mains cable flexes are designed to remain intact after much more man handling. Even if you look at the professional PSF135 or RG series coaxial cables, they'll handle the voltage, even take a reasonable amount of current, but the standard of insulation is still nowhere near as good as cables designed for the purpose of carrying mains electricity. Its your kit and your health, I think all us 'Grotties' ask is be careful;) I've got to agree with SandyK, this sort of DIY cable design should not be attempted by inexperienced hobbyists  |
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Post by sometrolls2 on Nov 7, 2008 1:33:41 GMT
A second reason to stay within standard specs/regs is that no doing so gives an insurance company a ready made reason not to payout in the event of a claim.
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Post by Deleted on Nov 7, 2008 2:13:16 GMT
A second reason to stay within standard specs/regs is that no doing so gives an insurance company a ready made reason not to payout in the event of a claim. I think you may have hit the nail on the head ! Another concern that I have,is that because of the outer insulation being thinner than with mains rated cable,that in the proposed construction where the screens are not connected to earth, that a breakdown of the dielectric to the screens would remain unnoticed, and be a potential disaster waiting to happen. At least with the screens earthed, a breakdown of the dielectric in the ACTIVE lead would result in a circuit breaker,operating. SandyK |
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Post by gns on Nov 7, 2008 6:03:14 GMT
At least with the screens earthed, a breakdown of the dielectric in the ACTIVE lead would result in a circuit breaker,operating. SandyK Unless the earth wire came adrift in the plug or anywhere else in the supply between power board and socket. Isn't science boring? So much better if it were magic eh? Well it ain't! Did I mention that gspaudio is also an approved and insured electrical safety testing business? John takes care of that side but I also own a copy of the 16th edition IEEE wiring regulations and understand it. The 16th edition (as it is known in short) recognises there are differences in mains wiring capabilities and capacities - it would be a tad silly if it didn't. So let me ask where the science came from which guadixman accused me of bullsh*t with?  If you're going to accuse me come to my door and do it in person!!!  |
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Post by PinkFloyd on Nov 7, 2008 7:50:38 GMT
Do you REALLY want this man turning up at your door? |
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robertkd
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Post by robertkd on Nov 7, 2008 11:54:36 GMT
As to sat. cable being dangerous - take a look at any normal mains cable unless you are using really high voltages, conductors of 1.25mm are more than adequate. The stranded mil. spec. cable I bought from the USA is rated @ 1200V and is nowhere near 1.25mm. Actually 1.25mm is a bit light on but ok for the "lite" loads I suppose, I would give some consideration to the advice and warnings regarding mains leads and the connection of "home brew" cable assemblies to the mains! Whilst I'm sure the stuff Rick posted might work well I'm sure it's a "real joy" to work with, at least for small items it's self supporting  so exactly what will that do if you don't even connect them! I don't know about the electrical safety regulations in your country but I doubt a single solid earth would be acceptable! I intend to build just such a mains cable for my power amp and will beef up the wiring by using the air channels for extra solid core wire. Yes they are light duty power requirements and if only 2 core are of double insulated design. Again I don't subscribe to "shielded mains" cables, correct filtering and even a power conditioner and attention to details such as lead dress that is don't run signal cables with mains cables, if you are compelled to run shielded mains buy approved units, but do remember the several kilometers of "mains" cable to your meter box will pick up a lot of krap and route that into your power supply's |
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Post by gns on Nov 7, 2008 14:18:23 GMT
Do you REALLY want this man turning up at your door? Well, err, he does look a bit intimidating - let's skip that last comment... ;D |
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insomniac
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Post by insomniac on Nov 7, 2008 15:55:35 GMT
Do you REALLY want this man turning up at your door? Depends on how tall he is as the ceiling could do with a coat of paint |
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Post by PinkFloyd on Nov 7, 2008 17:51:48 GMT
Do you REALLY want this man turning up at your door? Depends on how tall he is as the ceiling could do with a coat of paint |
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