Any real difference in RCA cables quality for sub?

If your system is quiet you have have good start. The signal needs to get to the consumer without picking up NOISE.

Hook up a sub and get a hiss from the tweeters. That noise..

I’ve also seen RCAs pass a signal BUT one end to the other it would lose a strong enough signal to make the sub respond correctly. Turn it up and it would work better. Correctly, I would question. Usually with copper as a clad OVER aluminum or simular conductive alloys. That type of IC is real common in Auto audio gear.

A good copper IC with good terminal ends. I usually solder BASS stuff and use gold clad over the terminals.. Just works great. Copper/gold for bass.. Peas and Carrots.. :-)

I use a weave works perfect.. 3 meters is about 30.00 usd with locking ends.. Copper/silver clad PTFE. or OCC PTFE. Cooking a bunch right now..

Regards

Cables do make a difference with subs, especially if you have a really good sub. But. The difference is  small.

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.