i just got some great Wharfedale speakers and the subwoofer is the WH-S8E model shown here.....

Sub Woofer

I am trying to connect it to my

Panasonic SC-XH50

The Panasonic has those crappy spring loaded connectors but the Wharfedale sub has RCA connectors.

Can you even connect this powered sub woofer to the likes of the Panasonic?

Lastly it is probably time to upgrade my Home theater receiver so what are you guys recommending?

I realy want some thing with proper binding post style connecters not these spring loaded things.