Directional speaker wires, what and why.


I've been aware for a long time that some speaker cables are designated as "directional". To a limited extent I can understand the rational behind choices based on wire size and construction, biwiring, etc. but don't understand how any conductor can have directional characteristics even in a DC circuit. I'm not denying the possibility but can someone please clarify this for me?

The only reason this comes up is that some time ago, I changed from spades to locking bananas on my wires. It was just yesterday that I noticed that my cables have arrows printed on them indicating, I suppose, that they should be hooked up with the arrows pointing toward the speakers from the amp. The cables in question, btw, are Straightwire Octave 2's.

I've experimented with speaker wires in an attempt to optimize my system but have never been able to discern much, if any, difference between them. That being the case, though, I now don't know whether these have been situated incorrectly since about 2004 when I bought them with my Martin Logan Odyssey speakers.

How can there be a directional character to a conductor and how does that affect sound?
broadstone

Showing 6 responses by geoffkait

Even though wires operate "AC" the actual audio signal, I.e., the electromagnetic wave, is not alternating and flows in one direction only - in the direction toward the speakers. Thus, since the conductor is not physically symmetrical, it will sound different one direction vs the other direction. It's not brain surgery.
The speakers are attempting to replicate the waveform of the audio signal. The in and out excursions of the speaker diaphragms are controlled by the amplifier. If the speaker cables are reversed the audio waveform is inverted. Thus it sounds like someone is sucking on a trumpet instead of blowing it. Has nothing to do with wire directionality. The audio signal coming down the speaker cables is an electromagnetic wave.
On a hunch I switched the direction of my Analysis Plus interconnects recently and the difference was like night and day. I had read somewhere in cyberspace that the arrows on the AP interconnects should be in the reverse direction from Logic. Just goes to show how unreliable information on the Internet can be sometimes. Consistent Channelization of all cabling in the system is also quite important sonically as I found out.
Czarivey wrote,

"More likely because of fresh reconnection and nothing more.
Cleaner surfaces cleaner contacts. Treat with deoxit in addition to hear even better differences."

Uh, the contacts were already clean so your theory is incorrect, though interesting. Like fuses, all cables are directional. I did not create reality.
Chrissain, that is quite interesting. But I don't see how out gassing and oxidation on the conductor would make the cable directional. Furthermore, your explanation is a little troubling since it cannot account for directionality in fuses, for which there is no dielectric material.
Ptss wrote,

"Ask the manufacturer of such. My take is "basic economic principles" will ultimately dictate what Manufacturers will advise; based on wanting to remain profitably in business! No suprise there.Cable directionality can be based an a number of factors. One of the most basic being grounding issues. Once your system is adequately resolving--no mean feat I'm afraid--then an upgrade in even a power cable will be very apparent. Absolute polarity becomes very obvious and the phase reversal switch on a preamp becomes appreciated as essential to proper reproduction of the musical event."

Boy, did that skirt the whole issue of wire directionality. I'm pretty sure what we are talking about here is not a grounding issue, which is a real but separate issue. What we are talking about is why a wire, any wire, a fuse, an interconnect sounds better when connected in one direction that the other. This is true even for non shielded cables. Whether this is true for power cords as well, the jury is still out on that one, but I wouldn't rule it out. But the real underling issue here, if I can be so bold, is that IF wire is directional, not only fuses and interconnects and speaker cables are at risk here. All the internal wiring of electonics, the transformers, the wire in capacitors, the wiring in crossovers, internal speaker wiring...it's all directional! Hel-Loo!!