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Dean ![]() Special Collaborator ![]() ![]() Retired Admin and Amateur Layabout Joined: May 13 2007 Location: Europe Status: Offline Points: 37575 |
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Edited by Dean - May 15 2011 at 06:12 |
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Snow Dog ![]() Special Collaborator ![]() ![]() Honorary Collaborator Joined: March 23 2005 Location: Caerdydd Status: Offline Points: 32995 |
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Is the Live and Neutral wire from everyday appliances the same or is it too thick?
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Dean ![]() Special Collaborator ![]() ![]() Retired Admin and Amateur Layabout Joined: May 13 2007 Location: Europe Status: Offline Points: 37575 |
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This stuff: http://cpc.farnell.com/pro-power/3182-2-50mmblk100m/cable-flexible-3182-2-50mm-blk/dp/CB11203 ?
There isn't any issue with "too thick" apart from flexibility and how it looks.
Wire comes in different gauges, the Roger Russell article I've linked several times in this thread gives the maximum lengths for each cable gauge (the same table is also shown on the Wikipedia page for Speaker Cable). Basically what that table says is that for an average room with cable lengths of 3m any gauge will be okay, so using thin or thicker cable works just fine.
* reading the whole of the Roger Russell article is worth 10 minutes of anyone's time: http://www.roger-russell.com/wire/wire.htm
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Snow Dog ![]() Special Collaborator ![]() ![]() Honorary Collaborator Joined: March 23 2005 Location: Caerdydd Status: Offline Points: 32995 |
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^ Funny, every instinct tells me to use "proper" cable.
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Mr ProgFreak ![]() Forum Senior Member ![]() ![]() Joined: November 08 2008 Location: Sweden Status: Offline Points: 5195 |
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Have you ever heard of confirmation bias? If you set up an experiment like that, where you know which alternative is supposed to sound better, your brain will eventually make that happen for you - especially if, as in this case, there is no discernable difference between the signals. You will hear what you think you should hear.
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Mr ProgFreak ![]() Forum Senior Member ![]() ![]() Joined: November 08 2008 Location: Sweden Status: Offline Points: 5195 |
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Humans don't have an innate instinct for setting up electrical circuits ... so what you refer to as "instinct" is actually a life's exposure to education and marketing.
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Mr ProgFreak ![]() Forum Senior Member ![]() ![]() Joined: November 08 2008 Location: Sweden Status: Offline Points: 5195 |
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It's funny though that in another thread you talk about that first part and how *my* post was the first one in a long time that reminded you of it. I fail to see how any of my recent posts here could possibly qualify as an "attack", let alone a "vicious" one. And I don't give a rat's bum about your signature - I simply pointed out that referencing to it in a reasonable discussion is a bad idea since it's just a roundabout way of saying "screw you, I'm right and I won't even tell you why". In internet lingo: epic fail. ![]() |
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Snow Dog ![]() Special Collaborator ![]() ![]() Honorary Collaborator Joined: March 23 2005 Location: Caerdydd Status: Offline Points: 32995 |
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Well that's what I meant.
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The T ![]() Special Collaborator ![]() ![]() Honorary Collaborator Joined: October 16 2006 Location: FL, USA Status: Offline Points: 17493 |
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Ok but can you use a lamp as a speaker?
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oliverstoned ![]() Special Collaborator ![]() ![]() Honorary Collaborator Joined: March 26 2004 Location: France Status: Offline Points: 6308 |
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That would not be a very lighted advice....
But seriously, this obsession about blind test: if blind test doesnt work, do you conclude that there's no difference between component (or accessory) A and component B? logically that would mean that there's no difference at all between any elements...Dean states that all cables sound the same, that you can plug almost as much devices as you want on the same plugs..etc...that you can put vibration devices below your components or not, it's end up the same. So, to all the people reading this thread, following this logic i'd conclude: you already have the best system in the world, does it sounds great? So if you feel somehow frustrated, it's all in your mind... About blind testing again: i explain that i compared my Imod/portable amp combo as a source plugged on my preamp against my drive/converter combo playing the same album, switching from one to another in real time. If you listen only 5 seconds of each, it sounds very identical...but from 30 seconds, the fatigue due to the Imod/amp combo is much more important whereas you listen much longer to the drive/converter setup without being tired. So an instant comparison is not very revelant, especially in the digital domain. Edited by oliverstoned - May 15 2011 at 14:06 |
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Dean ![]() Special Collaborator ![]() ![]() Retired Admin and Amateur Layabout Joined: May 13 2007 Location: Europe Status: Offline Points: 37575 |
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Mr ProgFreak ![]() Forum Senior Member ![]() ![]() Joined: November 08 2008 Location: Sweden Status: Offline Points: 5195 |
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^^ Oliver: "Blind" means that you are listening to two sources A and B and you don't know which is which. The point is that as long as you know that A is the source which you think sounds better, and B is the source which you thinks sounds worse, switching back and forth between the two is rather pointless. Have yourself blindfolded by another person and have that person switch back and forth between the sources - the person switches, you listen and say whether you think it's the good one or the bad one, the person notes that and switches randomly, then you repeat the process. That would begin to be a proper blind test.
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Dean ![]() Special Collaborator ![]() ![]() Retired Admin and Amateur Layabout Joined: May 13 2007 Location: Europe Status: Offline Points: 37575 |
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I refer my learned friend to my post above
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Hmmm, so if the conclusion is false then every argument is also false? That reasoning is also false and no one here fell for it.
If a blind test fails to identify a difference between two components A and B then what other explanation could there be other than there is no difference between component A and component B? Using that to say there is therefore no difference between any components is a long way from being a logical conclusion - it's totally fallacious illogical conclusion.
"Dean states... that all cables sound the same"
"Dean states ...that you can plug almost as much devices as you want on the same plugs"...
"Dean states...that you can put vibration devices below your components or not"...
*comment ignored*
That's not a blind test. In that example you know which source is which. In a blind or double blind test you will not know which set-up you are hearing. Since you have A 50/50 chance of guessing the right set-up, the test is repeated a number of times to eliminate random chance. Edited by Dean - May 15 2011 at 18:32 |
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Dean ![]() Special Collaborator ![]() ![]() Retired Admin and Amateur Layabout Joined: May 13 2007 Location: Europe Status: Offline Points: 37575 |
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I freely admit to using 2.5mm² cable because it has a higher current rating and more strands than 1.5mm² for no other reason than it "feels right" even though my technical knowledge tells me that the thinner cable would work just fine and I'm confident that it would sound just fine too. I am also prone to such irrational judgements, just as I will use six screws to hold up a kitchen shelf when I know four will do the job just fine and I will buy a 100W amplifier even when I know a 50W amp is too loud for my sitting room and I drive a 150mph car when I know the national speed limit is 70mph.
The resistance of the cable does not affect how the system sounds, whether it is higher resistance (thin cable) or lower (thick cable) the sound is the same because the resistance is constant across the entire frequency band so the effect is also constant.
10 metres of 1.5mm cable has a resistance of 0.1ohms, 10 meters of 2.5mm cable has a resistance of 0.03ohms ... the thiner cable has 3 times the resistance, but it is not 3 times worse.
Send 8.98VRMS of signal into an 8ohm speaker through a 2.5mm cable and the power at the speaker is 10W. Change that to 1.5mm cable and the power at the speaker drops to 9.83W because the voltage drops to 8.87VRMS due to the increased resistance - this relates to a 0.075dB drop in volume (the threshold of human hearing is -3dB) - on a 50W amp you can compensate for that by turning the Volume control by 0.915° clockwise.
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Sean Trane ![]() Special Collaborator ![]() Prog Folk Joined: April 29 2004 Location: Heart of Europe Status: Offline Points: 20825 |
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Of course you can.... It'll give correct service for a minimal price....
just don't expect a maximum sonic experience.... and if you're going to spend 1500.00 on a hi-fi.... it would be sad if you were not spending some 20.00 for speaker cables... common sense
![]() Now of course if you have a all-in-one stereo (which does not qualify as hi-fi >> the components must be separate and be between 43 and 45 cm wide) >>> so if you have these mini or micro stereo.... it's senseless to spend money on specific cables...
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Snowie....
what one calls "lamp cable" is a two-wire system (generally 1.5² cross section) and has no ground cable cable.... these are to be use normally only for light fixtures in the modern house electricity wiring system, since the lights fixtures require no ground... Now of course your electrical appliances (like a portable DVD player or electric water boiler for tea) come with no ground connection, but these appliances are what's called "double isolated" electrically speaking.... you should see this next to the logo of EC regulation compliance marking >> you'll see a double square (one inside the other) >>> this means that the manufacturer built it according to the regulations
However most of the rest of the house electricity MUST be legally a three wire system (with that ground cable) since it goes to electrical outlets.... these wires have a 2.5³ cross-section and stand as much as 3500W usage.... (this means roughly 2é0V x 16A =3520W >>> your normal fuses in the fuseboards are of 16A >> if you have 20A fuses, you must use other cables.....
But by all means there is nothing stopping someone to use these 2.5² cross section wire with the ground cable being left unused
>>> hey you can even choose to use the ground cable and not use one of the live cables (just in case you're allergic to the blue or brown colours... but not both
![]() Edited by Sean Trane - May 16 2011 at 03:01 |
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let's just stay above the moral melee
prefer the sink to the gutter keep our sand-castle virtues content to be a doer as well as a thinker, prefer lifting our pen rather than un-sheath our sword |
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Sean Trane ![]() Special Collaborator ![]() Prog Folk Joined: April 29 2004 Location: Heart of Europe Status: Offline Points: 20825 |
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But I didn't right??? since I'm still discussing with you.... That's how the signature works.... if I break unilaterally the dialogue abruptly... then it would come into effect... (clever, right??)....
That was a pure pun re listening to music experience, while stressing my point - in a live conversation, I'm sure you would've understood it as such and given me the service break point on that smash while laughing... you won't listen properly, since you've got deaf ears >> therefore I really don't see where the problem is...
Actually if you read back this thread.... I'm not the one that reffered to my signature first.... I re-intervened in the thread (after staying away for some weeks/months) just after you guys made reference to it.... I just happened to "pop" by just after it.
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let's just stay above the moral melee
prefer the sink to the gutter keep our sand-castle virtues content to be a doer as well as a thinker, prefer lifting our pen rather than un-sheath our sword |
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Snow Dog ![]() Special Collaborator ![]() ![]() Honorary Collaborator Joined: March 23 2005 Location: Caerdydd Status: Offline Points: 32995 |
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@Dean and Hugues. Thanks for all the info and clarification. I understand clearly now that lamp cable is what an elecltrician would use to wire the lighting system.
So normal cable for elevtrical goods would not be the same or useful for speakers?
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Snow Dog ![]() Special Collaborator ![]() ![]() Honorary Collaborator Joined: March 23 2005 Location: Caerdydd Status: Offline Points: 32995 |
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Hardly!
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Dean ![]() Special Collaborator ![]() ![]() Retired Admin and Amateur Layabout Joined: May 13 2007 Location: Europe Status: Offline Points: 37575 |
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![]() We are talking about this stuff, which has multi-strand copper and is used to wire a table lamp to the 13A plug:
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yes it would - that is exactly what I'm talking about - cut the twin-flex off an old table lamp, or a food-processor or even an electric lawn mower, and use it to drive your speakers. Edited by Dean - May 16 2011 at 05:47 |
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Snow Dog ![]() Special Collaborator ![]() ![]() Honorary Collaborator Joined: March 23 2005 Location: Caerdydd Status: Offline Points: 32995 |
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Of course they use one thick copper cable instead of strands....I knew that! Thanks Dean! Sometimes my brain......
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