Any real difference in RCA cables quality for sub?

OP a Spdif cable works fine especially for longer runs or multiple subs.  Save all the money you would spend on exotic metal conductors and fancy connectors where it can make a difference, a single ended line level interconnect.

@grapeleap,

I am using Blue Jeans Cables  Mogami 16 foot pair of interconnects to my SVS sub. Cost was less than $50.00.  Bass is phenomenal.  Wouldn’t waste more on that as my sub cuts out at 60hz at 18 dB per octave.  

Has anyone actually done listening tests? I am just hearing mostly spitballing here. I have not, but always wondered. I always bought something cheap from a real audio company just to be careful. After hundreds of hours of comparing interconnects and speaker cables and noting such profound differences, I was tired and never found the time to do systematic tests. ... so would just hedge my bets. I’d really like to hear if someone with high end audio skill and experience has done some serious work.

Put it this way. I am really thorough and do an amazing number of things in the name of sound quality. The quality of the interconnect used for my subs is so critically important it is by far the cheapest and worst in my whole system. That's how much difference it makes.

@millercarbon Good to hear... this has always made sense to me... but so frequently the differences I hear do not make sense. For instance, I just switched the power cord on my Aurender W20SE from a Shunyatta Venom 14 D to a Cardas Clear Beyond and it produced a noticable improvement in bass and detail... the Aurender audio circuits run on battery power to avoid line current... it just plain shouldn’t matter. So for fun, I switched to a WireWorld Silver Electra 7... harsh... You just have to listen.