I just finished pulling 12 gauge, 2 wire speaker cable throughout my entire house. All cables were a home run from a central closet to each speaker location. In my rush to finish the job (and lack of research), I didn't realize that I should have run a shielded RG6 (or something else than speaker wire) between the amp and my sub location.
My wires are now buried under spray foam insulation and sheetrock so there's no way to repull wire.
If my A/V receiver has an RCA plug sub out and my sub has a RCA plug in, can I purchase an adapter or splice an RCA plug on each end? What options do I have?