If it's really a coax it's a gimmick. However, there is a variety of cable
called "pseudo-balanced" that has the shield unconnected on the receiving
end. In that case the arrows denote that.

"JYC" wrote in message
news:jdaHb.145650$8y1.433106@attbi_s52...
The coax cable going from my audio-video component to the sub-woofer has
arrows printed on the insulation . Do i really have to connect it with the
arrows pointing to the sub ? Or is it just a marketing gimmick ?

Thanx
JYC