Hi,

With the subwoofer comes an adaptor which allows you to use a subwoofer cable with standard RCA connectors. Here is a link to a picture illustrating it. - http://axiomaudio.com/global/rca.html

The link is also accessible from every Axiom subwoofer model main product page by simply clicking on the RCA picture located inside the "Question We Get All The Time" box.

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