Speaker cable direction.

Posted by: Ebeneezer01 on 20 July 2016

Hi guys, guess what. On dismantling my system to get my CDS serviced, I have noticed one of my speaker cables is connected the wrong way round.  Will it be worth lifting the fitted carpet and turning it around the right way?

Cheers Mike, (feeling rather stupid)

Posted on: 20 July 2016 by Harry

You yourself are the best placed person to answer that. I would. But that's just me. If it's not going to be a gigantic upheaval, what have you got to lose?

Posted on: 20 July 2016 by Huge

There is also an hypothesis that, although cables may initially become directional when the insulation is extruded onto them, a greater degree of directionality is induced in the cable during use.  So once a cable has been in use in one orientation, it shouldn't then be reversed.

So you can decide to which theory you subscribe, and act accordingly.

Posted on: 20 July 2016 by Adam Zielinski

If you had it like this for more than few month, I would not really bother. By now they are both 'pointing' in the same direction.

Unless of course music in one of the channels plays back to front - than definitely you need to change the cable's direction 

Posted on: 20 July 2016 by winkyincanada

I dunno, does the music play backwards in that channel?

Posted on: 20 July 2016 by TOBYJUG

What colour is the fitted carpet ?

Posted on: 20 July 2016 by naim_nymph

I wouldn't have thought that under the carpet is a good place to run naca5 anyway...

Debs

Posted on: 20 July 2016 by Javi A.

Lets asume that we are playing a 1000 kHz sinusoidal signal trough  our system. This signal means... 1/2000th of second the voltage, and the current, is applied from our red to our black amp terminals... the next 1/2000th of second the voltage is reversed...so from black to red... so... why a directionallity? This is completely out of my knowledge.

I think that while red terminal of the amp is connected to the red termial of the speaker is enought.

...Javi

Posted on: 20 July 2016 by Adam Zielinski

Javi - the logic you have outlined is undeniable. But there is a bit more to cable directionality than just that.... 

Posted on: 21 July 2016 by Simon-in-Suffolk

Havi, you are of course completely correct.. but there may be other effects such as ground plane coupling of the amp through to the cable and speaker.. Concievably I can see how cabling directionality could affect this.. But it would be a side effect as it were..and surely could only ever be subtle with good amp design and would vary from design to design. Perhaps Class A amps might be more susceptible to cable directionality. I have never knowingly heard speaker cable directionality. So to my mind if there is any DC current flowing through the cable then directionality may be apparent. If it's pure AC with no DC at all then clearly directionality is a meaningless concept.

Simon

Posted on: 24 July 2016 by sktn77a

"If it's pure AC with no DC at all then clearly directionality is a meaningless concept."

Couldn't agree more.  It's concepts like speaker cable directionality, and their purveyors, that give high end audio a bad name!

Posted on: 25 July 2016 by TerryP

Could depend upon the warp and weft of the carpet......

Posted on: 25 July 2016 by Huge

And don't forget that the chance of a jam butty landing jam side up is inversely proportional to the cost of the carpet.
N.B.   A a carpet cannot cost lest than 1 currency unit, the jam butty must drop through a discrete set of quantum states as it falls, rather than falling smoothly; therefore this could also apply to electrons or magnetic fields travelling the other way.

Posted on: 25 July 2016 by Innocent Bystander

Any significant DC on the speaker output from the amp is generally highly undesirable, and a good amp will keep it to a very low level if any atall, so all that should be there is the AC signal.

Of course, if the snake oil is rubbed in vigorously enough it may create an electrostatic charge polarising the conductors, which earthing of the correct one should neutralise. 

Posted on: 25 July 2016 by Huge

Ah yes AudioQuest SLiP (Snake-oil Lipo-Protien); helps lubricate the cable for installation!  So that's why it sounds better!

Posted on: 25 July 2016 by kevin J Carden

Mike, reiterate Huge and Adam's posts earlier (3rd and 4th in this thread).

i recently had a similar experience to yours whereby my dealer managed to install some Mogami speaker cables the wrong way round under my floorboards. I noticed it and contacted  the cable supplier ( the always helpful and wonderful John Burns at Pear Audio) who reckoned that after a month of running it, the polarity (or whatever explains directionality) would have reset itself to be 'correct' again ...

Posted on: 26 July 2016 by Ebeneezer01

Thanks guys, I must admit I hoped that there was a bit of snake oil envolved. Good song by Steve Earl though.

cheers

Posted on: 26 July 2016 by Javi A.
Ebeneezer01 posted:

Thanks guys, I must admit I hoped that there was a bit of snake oil envolved. Good song by Steve Earl though.

cheers

I think that it is areally "oily" subject.