Yep, as far as I can tell, there isn't much difference between a digital coax (video?) and sub cable. If they are both quality cables, I don't see why there would be any difference. Sometimes I think the various nomenclature gets confusing (composite video, digital coax, subwoofer cable, etc.). I just look at the construction now vs. what the manufacturers are calling the cable. Coax vs. twisted pair I can understand. Digital coax vs. sub cable (constructed from coax) is sketchy IMHO.
I'm currently using AR Pro video coax cable for my sub cable duties and it sounds fine.
Thanks, Joe and Bob! I tried the digital audio coax last nigt//very tight fit into the rca's. What a difference between an old rca cable I had laying around that was 25 years old and the monster I had extra. I need to buy some more cables, so you all say coax is the key word ( video coax is alright for audio), what about this twisted pair stuff from AR/dayton/monster/ios??/etc