Hi, after some reccomendations from this board, I think I may be purchasing a NAD c350 integrated amplifer to power a pair of phase technology pc2 bookshelf speakers. However, I would like to use an ADIRE AUDIO RAVA subwoofer in this system as well. My question is, with the NAD integrated amp and the rava sub, would I be able to send my primary speakers a hi pass signal while sending the sub a low pass signal? Would I need to purchase some kind of additional crossover? How would the mechanics of this work? Is the crossover in the rava sub capable of sending a hi-pass signal through it's rca outputs? Could I send this hi pass signal to the amp in the NAD? I would really like to hi pass the phase techs if possible, because it has been my expereince that speakers tend to become more effecient and less suscpetible to distortion when playing a limited bandwidth.