How do I connect my speaker cable to the back of my sub woofer that only has RCA connections?

I only ran 12ga 2conductor speaker wire to the location of the subwoofer. I can't move the woofer or run coax on the surface. Is there a way to use my cable to run this self powered sub. I have a power outlet so all I need to do is transmit the signal via the speaker cable. Is this possible?

Not really. You should have run a line-level interconnect to the sub's location. Speaker wire is unshielded and will be susceptible to noise; this is especially bad for subwoofers because they will happily and loudly reproduce 60 Hz hum.

Is the speaker wire running through a wall? Maybe you can use it to pull a proper interconnect through the wall.

If you absolutely can't fix the wiring or move the sub, your only choice will be to get a different sub which accepts speaker-level input. I havent heard of a way to do that How is the 12ga speaker connection connected on the other end? Is your Receiver providing a speaker level sub-woofer output? It sound to me that you need to get a speaker only sub-woofer and not use this powered sub. It is possible to drop a speaker level input down to line level with a T-pad, but that's going to be way over your head.

The answers post by the user, for information only, CeQnA.com does not guarantee the right.