Hooked up my new vp150 speaker today to my Yamaha RX-V3000 receiver, and I am actually disappointed. It seems like I have to increase the volume by 15db to get the same volume from my 8yr old polk CS300 center. I have the impedance set at 8 ohms and all speakers set at small. I read another post by a guy with the same receiver and swapped it out with a cheap radio shack amp and felt his axioms sounded better with the cheap amp. Could we both just be setting up outr receivers incorrecly? Any help or suggestions? I really want to feel that it's on my end and not the vp150.