Interconnects for Your Audio/Video System - Choosing The Proper Cables

Research & DevelopmentIn a quality interconnect, all of these processes are
I began designing audio and video interconnect cablesdone by hand, one cable at a time. This combination of
in 1988. I was asked to develop custom interconnectsquality parts and craftsmanship is essential to the
for discriminating audio and videophiles, who wanted tomanufacture of a superior interconnect.
see and hear the quality of their components and theLow Capacitance
source material without added personality from theirResearch indicates that Low Capacitance is the most
interconnects. The cables I constructed were createdrelevant aspect of design for Analog or Digital Audio
to solve two specific problems in interconnect design.and Video Interconnect Cables. Capacitance is
Prior to this point these problems had not beendetermined by the number and thickness of the center
addressed in the ever-changing field of high-end audioconductors in relationship to the outside shield. The
video. The first was the subtle size difference of thematerial and thickness of the dielectric insulation also
RCA connectors used in the manufacture of mid-fidetermines capacitance. Low Capacitance custom
and high-end components. The second was thecable provides the best imaging and sound staging in
inherent loss of information through long runs of cable.analog audio and digital audio as well as the most
It was also important that the interconnects allow ouraccurate contrast and definition in video. This is
clients the freedom to combine componentsespecially true where long cable runs are required.
regardless of the type of connectors utilized by theOver the years, speaker wire manufacturers have
various manufacturers. The custom cables had toshown the importance of heavy gauge wire between
carry information without signal loss and not be limitedthe amplifier and the speakers to reduce resistance in
to short runs. The custom cables had to be extremelythe signal path. This notion of "The Heavier The Better"
flexible and durable to adapt for custom installations.has erroneously been passed on to purchasers of
Most importantly they had to maintain state of the artinterconnect cables for their components. When
quality while remaining cost effective.dealing with low millivolt signals from component to
End Connectorscomponent, Low Capacitance (measured in
Each connector must tolerate the extreme heatpicofarads) is the most relevant specification in cutting
generated by the melting of silver solder at the point ofsignal loss. It is not necessary for interconnect cables
termination. The connector used should be chosen forto be bulky and hard to use. In fact, Low Capacitance
its compatibility with the wire. Proper strain relief is alsoInterconnects are rarely heavy gauge and can be
a crucial factor in interconnect design. It is importantvery flexible. Flexibility enables a cable to be angled to
that the wire and connector have a seamlesswhatever configuration necessary, without affecting
integration. Every pair should be matched and testedthe integrity of the design.
for continuity and fit. The connection should then beA cable should be selected for its purity, flexibility,
insulated with heatshrink, to protect againstdurability, capacitance and individual specifications for
contamination and to create a more durableits designated application.
termination.