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Mains cables
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Ernie View Drop Down
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Points: 386 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Ernie Quote  Post ReplyReply Direct Link To This Post Posted: 08 Apr 2016 at 3:56pm
Bassman,
I like a DIYer and let us know what results you get. I've never heard of the Belden cable you're using so I looked up the specs. My concern is that it's only rated at 300V rms. I'm pretty sure it should be 600/1000V meaning it can withstand 600V between conductors to earth and 1000V between adjacent conductors to cope with fault conditions. I'll have to dig the regs out to be absolutely sure.

Just research and be careful when you're messing about with the mains.
There are 10 kinds of people. Those who understand binary and those who don't.
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bass man View Drop Down
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Points: 88 		Post Options Post Options   Thanks (0) Thanks(0)   Quote bass man Quote  Post ReplyReply Direct Link To This Post Posted: 08 Apr 2016 at 5:45pm
cheers ernie im sure it will be ok fot job
im always careful when messing with electrics ernie,i once saw my mate grab two guitars at the same time and it threw him to the floor and he had sparks coming out of his mouth and the strings on the guitars were glowing like toasters
what we didn't know was some clown had connected an amp into a socket with bare wires and then plugged another amp in on top haha
it was an old church so very old wiring aswell
my mate was thrashing about for at least ten seconds until I came to my senses and switched him off haha
i
paul
am from Yorkshire tha nuz
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PEHowland View Drop Down
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Originally posted by Richardl60 Richardl60 wrote:

Hi PEH - noting the comments over Using logic to the debate on the reasons why mains cables don't work have you ever tried a high quality aftermarket mains cable? From the comments I suspect not?

Hi Richard - you're correct, I've never tried one.  However, I do have a PhD in electronic engineering and spent the first 15 years of my career designing radar systems that had sensitivity and linearity requirements orders of magnitude greater than your audio system.  Mains leads were not a concern...   Anyway, if you think you can hear the difference, please carry on!

Paul
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Ernie View Drop Down
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Points: 386 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Ernie Quote  Post ReplyReply Direct Link To This Post Posted: 08 Apr 2016 at 6:57pm
Paul,
I'm an electrical engineer and I do side with your point of view but the back of most hifi systems are a spaghetti of cables and not a properly segregated system where power cables are well away from signal cables.

IMO a bit of extra shielding on the power cable wouldn't go amiss.

Precious metal contacts on the mains? Really not sure of this. If it were a low voltage system then yes, pull enough current and you'd get voltage drop across the connection. This is a high voltage low current system though. You'd need an awful big oxide build up create a voltage drop and as an oxide layer is a resistance I can't see it causing a distortion, may be wrong but their you go.

Woven construction could this give some common mode rejection to noise travelling down the line? Probably about as much as a more common twisted construction.

I've never bought any specialist mains cables because the brain says done be daft but I'm always interested in other people's experiences and if it makes them happy you can't really put a price on that. Mind you I've seen some of these things priced at £1.5k, for a kettle lead! Maybe you can put a price on happiness!
There are 10 kinds of people. Those who understand binary and those who don't.
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Richardl60 View Drop Down
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Points: 1468 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Richardl60 Quote  Post ReplyReply Direct Link To This Post Posted: 08 Apr 2016 at 7:51pm
Yes I agree the brain says it doesn't work but the ears do!    My mains to cd and amp are very short so I cannot understand how it works precisely but my cables due have multi layered shielding and in each core as well as amongst other things very high current carrying capacity.

I have also found that good cable management and cleaning often unseen dirt also helps the sound.

At least those open minded enough to try it can sit with a beaming smile on their faces as to what they know others are missing out on.

We all pay our money and make our choices but I always buy my hardware by ear.
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ServerBaboon View Drop Down
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Points: 970 		Post Options Post Options   Thanks (0) Thanks(0)   Quote ServerBaboon Quote  Post ReplyReply Direct Link To This Post Posted: 08 Apr 2016 at 11:43pm
Missing link cables are all about contact resistance as being important.

I live the idea of shielding as the modern home is full of electrical noise from wireless networking to energy saving bulbs.
Steve

-------------

Various bits of GSP Kit ..well two so far, unless you count the cables that is.
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Ernie View Drop Down
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Points: 386 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Ernie Quote  Post ReplyReply Direct Link To This Post Posted: 09 Apr 2016 at 12:47pm
Just been on that website. I got to the bit about woven cable inductance slowing down rate at which current can be drawn and switched off. A few mH's in a 50 Hz system producing a lagging power factor! Compared the inductance of the transformer! Christ on a bike!

It's utter cobblers like this that puts people off. If they'd exposed the cable to a typical 8/20 uS pulse and had data to prove it can't be induced or conducted in the cable I'd start to have some interest.
There are 10 kinds of people. Those who understand binary and those who don't.
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