Help connecting Fender Passport 300 Pro to Polk PSW505 sub

[SMEGLORD]

Hello,
The Passport has 1 1/4" sub out jack and the polk has 2 rca inputs and one line in, using an adapter and various configurations no such luck, thanks in advance for any advice!

 

[americanaudiophile]

Sub out on the Passport to the LFE input on the sub should work with the correct cable. There is no mention in the manual whether the sub out is stereo or mono which would be different connectors.

 

[SMEGLORD]

Sub out on the Passport to the LFE input on the sub should work with the correct cable. There is no mention in the manual whether the sub out is stereo or mono which would be different connectors.

Thanks for the reply. Yeah, no mention, in either case what would be the correct cable for either circumstance? Having trouble finding a 1/4 to rca. What I have tried is a stereo 1/16 to 1/4 connector for the PA with a stereo 1/16 splitter to the sub, no sound from either channel.