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I have to wonder where all of this mythology about interconnects and speaker
cable comes from. When I first got out of college, many years ago, I went to work as an engineer at Lockheed Missiles & Space Company's Cable Laboratory where I spent three years. In the process of specifying all of the cable and connectors for the Polaris Poseidon Missile, I learned pretty much all there is to know about both cable and connectors and their application to everything from low voltage DC to UHF AC and everything in between. It turns out that both are very well understood and very well characterized areas of electronics and as theory goes, the principles are quite simple. There are no "unknowns" about designing specific cables for specific applications, there is no voodoo, no magic, and there have been no "breakthroughs" in the last 50 years to account for the kinds and prices of cable that are being marketed by audio snake-oil salesmen. I will also guarantee you that IF any breakthroughs in this area have occurred, they did not emanate from companies like Nordost, AudioQuest, Kimber, et al. The bottom line is that for DC through about 100KHz, wire is easy. Almost anything that is a decent conductor from aluminum to copper to silver will work equally well in any practical sense. Above about 10 KHz, length becomes a problem with coaxial cable and small signals. Any interconnect using coaxial cable will start attenuating frequencies above 10 Khz at some cable length. But this length is pretty long. If you have your preamp in the den, and your high-powered tube power-amps in the garage, 80 ft away, then you need to choose your interconnects for extra-low shunt capacitance and low resistance. But, if your components are located on the same shelf next to one another, or, are on different shelves of the same cabinet, where they are only a meter or two away, Any audio cable will work equally as well as any other, and none will have ANY effect whatsoever on the resultant sound. Several things are for sure, cables, whether interconnects or speaker cables, which alter the signal passing through them are not doing their job. At best they are "fixed tone controls" and at worst they are a fraud. As far as plain cables are concerned (IOW, just plain wire or coaxial cable with the proper connectors and terminations on each end), no double-blind test has EVER been able to distinguish a cheap or home made interconnect from an expensive one. Also, no double-blind listening test has ever been able to tell the difference between a properly sized (for the power being transferred) length of zip-cord and any exotic speaker cable either. My advice is to buy on build quality. Nothing is more frustrating than an RCA to RCA interconnect that has failed. Cheap, molded ones tend to be unreliable, well made ones tend to last longer. If your equipment has gold-plated female RCA connectors on it, by all means buy interconnects that have gold-plated male RCAs on them. The beauty of gold is not that it's a great conductor of electricity, it isn't. But what it is, is non-corrosive making the connection surfaces clean, thus maximizing the surface contact area. While correctly designed cables make no difference in the sound, dirty or loose connections can. Keep your connector interfaces clean by using cable cleaners and contact enhancers such as DeOxit and Stabilant* and keep your connections tight. Forget the fancy, expensive stuff (unless you have money to burn and just like the bling factor. I don't think that most expensive interconnects and speaker cable are any worse than honest, well made and inexpensive ones, they just aren't any better), buy decently made cables and enjoy your audio system. *Stabilant contact enhancer used to be sold by Dayton-Wright as "Tweek". While Tweek is no longer available, Stabilant 22A (which is what Tweek was) is available in bulk form from a number of online suppliers. Google is your friend. Believe me, this stuff is NOT mouse-milk like green-pens for CDs, it really enhances contact area on two mating surfaces by filling in the microscopic voids in the metal. Nostrums like this which sport Mil-Spec numbers, SAE part numbers, and NASA part numbers (as Stabilant does) are unlikely to be frauds. It works on several levels. Not only does it increase surface area of mating connectors, but it forms a film between them that keeps corrosion OUT, insuring a gas-tight connection. It isn't cheap, but a 15 ml bottle will last many years. |
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