It can all boil down to which kind of music you like. In a classical Orchestra there are a few sources of bass notes wind percussion and string and each has a distinctly different type and timbre of sound. You also have low bass in hall effects so I would say in that type of music you are certainly going to hear a benefit from better cables. It also depends on how much of the bass spectrum you are using.
RCA cables to a subwoofer- how much does it matter?
I’m using nice OCC interconnects, balanced and unbalanced, in my system at all points except between my preamp and subwoofer, where I’m using a 12 foot pair of Blue Jeans unbalanced interconnect. My sub sounds great and with the crossover set to about 45hz, my sub’s main focus is really no more than an octave.
I am using a single sub- a McIntosh PS112. The cable I’m using, if I’m not mistaken, is sourced from Canare and is shielded. For use with my subwoofer is there any point in using a different “higher spec’d” subwoofer cable?