Skin Effect

"Skin Effect" describes the tendency of an AC current to travel toward the outside of a conductor as frequency increases. Using a round, solid-core or stranded-bunch wire as an example, the current density would appear as if the wire itself were a hollow tube - migrating toward the outside of the wire as frequency increases and leaving the inside of the wire unused. Since the inside, or core of the round wire isn't used for higher frequency AC current flow, it becomes in our best interest to eliminate as much of the unused part as possible.

75 Ohms and YOU

Everyone knows that maintaining a 75 Ohm characteristic impedance is critical for digital cables, in order to ensure that their digital components are performing at their best. This is what we call "common knowledge" and even neophyte audiophiles are intimately familiar with it.

This was not always "common knowledge" - and it took an interesting project launched in 1992 to establish the importance of a standard that was always there to begin with. Here's that story, in a nutshell:

Back in the early days of audiophile digimania, the CD format...


So ... I've been asked the question about the "directionality" of my cables ever since I've been designing and manufacturing cable for the audio industry. There persists this notion that somehow signal cables (interconnects, speaker cables, digital cables) are "directional."

For those of you who don't understand this bit of Hi Fi vernacular, I'll explain it like this: Your speaker cable has two ends to it - the end that will get connected to your amplifier, and the end that will get connected to your speaker. Imagine that you have them hooked up, and then you mark the...