Nordost must haved had a change in policy, probably because it caused confusion with other brands. A nordost box I have in front of me sais the opposite (at source) of this below from their website:
Question:
What direction should the arrows on the cable
point?
Answer:
Unless otherwise noted on the packaging, speaker cables should
be connected with the directional arrows pointing to the
loudspeakers. Interconnect(signal) cables should be connected
with the arrows pointing in the direction of the signal flow. For
example, from a Tuner, VCR,CD or DVD player the arrows should
go to the preamplifier or amplifier. From the pre-amp the arrows
should go into the amplifier.
Question:
What direction should the arrows on the cable
point?
Answer:
Unless otherwise noted on the packaging, speaker cables should
be connected with the directional arrows pointing to the
loudspeakers. Interconnect(signal) cables should be connected
with the arrows pointing in the direction of the signal flow. For
example, from a Tuner, VCR,CD or DVD player the arrows should
go to the preamplifier or amplifier. From the pre-amp the arrows
should go into the amplifier.
Notice the "unless otherwise noted on the packaging".