how do I go from my profire interface to a JBL PSW-1200?

[pixeltarian]

I have a profire 2626 and just want to throw a sub in a new output to get some low end data for some mixes. I have eight 1/4" balanced outs on the interface.
I could hook it up mono or stereo, but I won't be using any satellites or anything. I guess it still would be nice to sum the mix for the sub though. do I go for the line level input or high level input? should I start with a pair for mono 1/4" connectors and put rca at the other end? should I use balanced out of the interface and adapt it at the RCA end? I'm just wondering what the best way to do this is...

here's a look at the back of the sub:
http://gyazo.com/333f04f91dd8de0e510f3d61113d63b7.png


I have 1/4" balanced outs on the interface.

how do I accomplish subwoofer addition? thanks for any and all input.

[pixeltarian]

got it. just made a pair of proper TRS to RCA cables. I think there is a proper mono way to do it, but I don't have the brains for it.