What equipment are you connecting to that uses an RCA
jack for speaker connections? Are you SURE that it is
a speaker-level output and not line-level?

I know nothing about audio equipment so excuse my ignorance. I am
connecting the RCA plug into a subwoofer. The other end of the wire
connects to a wall speaker (part of the surround sound system). On the
speaker there are 2 connection levers for the wi black and red. I
assume black is negative and red is postive/hot.

In general which wire is usually positive? The wire that has the
writing on it? Honestly, the 1.5V battery idea to check for which one
is postive goes over my head. I wouldn't know what to do with the
battery to check for the polarity.


Much thanks for the help!