Using the dielectrics Polyester Terapthalate and Teflon applied around each solid rectangular conductor, we achieved an extraordinarily thin profile between the two stacked wires. To provide maximum protection while maintaining thinness, the cable sandwich is then sheathed in tough, high grade polymer. The result is a wire with a characteristic impedance that closely matches the impedance of loudspeakers. Alpha-Core's Goertz MI wire presents 2 to 4 ohms characteristic impedance as opposed to the 50 to 200 ohms presented by even the most expensive speaker cables. This correct electrical matching results in improved stereo imaging, better clarity, less high-frequency roll off and better low frequency definition.
Resistance is dependent on length and conductor cross section.
A low resistance provides superior damping between the amplifier and the speaker diaphragm, governing its ability to convey a true, powerful bass and lower mid-range. It also causes frequency dependent phase-shift which disturbs true stereo imaging. The characteristic impedance of the Goertz MI cables in the order of 2 to 4 ohms closely matches the impedance of loudspeakers. Almost all other speaker cables have characteristic impedance ranging from 50 to 200 ohms, a mismatch which causes distortion due to signal reflections. The cause seems to be that signal reflections caused by impedance mismatch enter the feedback loop of many amplifiers and disturb their ability to reproduce faithfully even lower frequency signals.