Originally posted by: montypythizzle
Do you really need in-wall speaker wire?? Never really seen speaker wire make a spark... let alone it has a probably thick jacket around it if it is 12awg.
I'd just go with whatever you use for 120v power lines. I've yet to see a home-audio amp capable of more than 60V AC on the output, or a speaker that used more than 15A.
Originally posted by: spidey07
Not to stir the pot, but for some speakers the characteristics of the cable is a big deal.
Primarily electrostatitcs, and even more so in when bi-wired.
That article does not take into account anything more than a typical distortionbox speaker.
Nelson Pass AND Sigfried Linkwitz reccomend avoiding expensive speaker wire. Bi-wiring has been proved to be pure malarkey; bi-amping is not, but as the name suggests, you have to buy a second amp (and usually an active crossover to go with it.)
With audio cables, the thing to look for is shielding - for the low-voltage signal cables (also called "interconnects"), even a tiny bit of RF hum will be multiplied a hundredfold by the amplifier they connect to. With speaker cables, a low capacitance and inductance is good - however, the stuff they use to wire lamps is usually just fine. Avoid funny-colored (say, silver on one side) low-cost "speaker" wire; often, the fancy-looking but cheap wire is more prone to oxidization (which is just annoying) than plain old copper.
Electrostatic speakers - which are nastily reactive loads, and act almost like a capacitor - can run into trouble if you've got inductance or capacitance from your cables. For the paranoid, a good 20' of Canare Star Quad will only run you about $25 tops. (If you've just spent $2,500 on a good pair of electrostatics, this is chump change.)
For video, go to Monoprice. Shielded cables are your friends. Use video connections in this order (best to worst): HDMI/DVI, component RGB, S-video, composite (one yellow connector), coaxial. For digital audio, both optical links and S/PDIF links are just about as good; however, S/PDIF cables are usually cheaper and more convenient. Just make sure to get a proper S/PDIF cable - while normal audio connectors use the same RCA plugs, S/PDIF cables have a different impeadance, and using the wrong impeadance of cable causes signal loss (which is bad.)