RCA (analog) signal over HDMI in wall cable

[rodgerdrew]

I have an HDMI cable already in the wall, but only need to run an RCA signal for a subwoofer. How to I adapt the cable to connect RCA to RCA?

 

[Alabalcho]

Get a (cheap) HDMI cable, peel about two inches of it in the middle, split the wires in half, then cut the cable in half. Strip each individual wire about half an inch, them combine them to make two identical two-wire cables. Connect one wire bundle together with the cable' shield. Solder RCA plugs or jacks to resulting cable.

 

[americanaudiophile]

Rather than ruin an HDMI cable I would suggest you get a wireless adapter for the sub. There are universal and as well model specific ones.
https/www.bestbuy.com/site/rocketfish-wireless-subwoofer-transmitter-receiver-kit-black/6965266.p?skuId=6965266