I just hooked up my Polk PSW10 subwoofer with my SX-218-K Pioneer receiver. The receiver only has wiring hook ups so I had to use option 2 and hook the sub to the front speakers and then to the receiver. I have sound from all the speakers but not from the sub. There is no option on the receiver to turn the speakers settings to small that I can find, only to change the decibel level. I have 16 gauge wire, all hooked up with pos to pos, neg to neg. Is there anyone that knows what to do? I greatly appreciate it--I don't want this sub to go to waste! I also put the receiver on pro logic setting and manually tried all speakers one at a time but there is no sound at all from the sub. Thank you!!!!