There's no need to buy a pricey "audiophile" subwoofer cable. But it's still worth getting a well-built, properly shielded one.
What benefits do subwoofer cables have but RCA cables don't? - Quora
AudioQuest Assortment with Graig Neville
Subwoofer cable to use? New to the audio setup and would like to ask for advice what Cable A or B I should use to hook up subwoofer to my Sony 5.2
Speaker vs. Instrument Cables, Why Instrument Cables Aren't Interchangeable
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All about subwoofers
Kudos KS1 v DIY Mogami w3104 speaker cable (kudos speaker owners might want to take a look) - Hi-Fi Corner - Naim Audio - Community
Do high quality subwoofer cables make a noticeable difference? - Quora
subwooder cables, learning center