Ok. Here is the deal. I have a set of Speakers. I have The JBL s312 studio series Main speakers (250 watss each) My Center chanel is the Klipsch RC-7. My subwoofer is The yamaha YST-SW800... Rated 800watss...goes down to 18 Hz. And finally the Yamaha RXV-1400. (all is setup to 8 ohm)

I dont know a lot..but I think i can get a preamp to make it work with my Yammie reciever.
I checked the back of my yammie and ...it has no plugs for a Preamp conection..What is the deal?????? Please Help!

Gioxtream.