Hi, I have a Yamaha RX-V2700. My previous subwoofer finally died and I am looking for a new subwoofer. I have Polk speakers all across so I was thinking about purchasing another Polk subwoofer. My question is instead of spending over $1000 to get a good subwoofer, will it be possible to get 2 $500-$600 subwoofers and hook them up to my RX-V2700? If so, what will I need? Appreciate your feedback in advance.