[masraum]

Originally Posted by flatbutt

The SW does have a power cord but my new receiver has no port for it. I'm just going to fool around with running the SW off of another channel just for balance.

I did a google. I found the following which shows pics of the sub
https://www.ebay.com/itm/234696485145?hash=item36a5002919:g:ZiwAAOSwJzxjIC7 R

The back of the sub has 4 wires coming out, red/black for input, and purple black for "control" which I think is where the power comes from (via the stereo?)

I also found the following.


Here's another person on the 'Net trying to do the same thing. I haven't read the whole thread, but maybe they solve the problem.

https://www.hometheatershack.com/threads/help-with-using-an-rca-rt2870-subwoofer.23351/