The Hosa BNC Male to RCA Male 6ft / 1.82m Coaxal Cable delivers top quality performance, durability as well as flexibility. This cable is constructed from the world's finest materials to create a real state-of-the-art composite video cable.
Is this the cable to use when connecting to a subwoofer to the coax connection in wall for the home theater system '"pre out subwoofer hookup"???????
Unfortunately without knowing what equipment you're using specifically it's nearly impossible to tell. The correct cable would depend on your current setup and the cable jacks that they're equipped with.