Connect dyna pas-2 and dyna st-70 to a Polk sw-10 sub woofer

Any idea?
The solution is as cheap and easy as a line out converter from Partsexpress for less than $10. They're cheap because the circuit is so simple, just two resistors per channel. Read this if you want to understand. I used this to convert one input to an output on my integrated amp. Check out the pic to see just how simple this is.