Power cable choice, does it matter for subs?

I contacted REL about this once and they said that they’ve done extensive testing on their units and did not find any real, hearable differences as long as the proper (minimum) gauge wire is used.

Yes, I think what you heard was thin wire. My DBA was run restricted like this for some time. Long story, but unbeknownst to me the sub amps were plugged into a current-limited outlet. The bass was still quite good, at least I thought it was until doing some more mods I discovered my error and fixed it. The sense of speed and slam or impact improved noticeably.  

Other than that though I have tried various speaker cables, interconnects, and power cords, hearing little to no difference. I now have some Synergistic Atmosphere power cords for review so maybe this will change. For now though it seems subs need adequate gauge and good power, but are nowhere near as sensitive to power cords as other components are.

Thanks for the response, I think the 14ga has helped over the 18ga and that should be enough,
Cheers
RW

Long time ago owned REL Stentor subs and yes a better ac cord made a significant improvement in sq. 

I believe I hear an improvement using 12 gauge aftermarket power cords on my REL subwoofers (two pairs used in two different systems). You don't have to break the bank just using $150 or less upgraded power cords.