Alan, I have VP150,M22's,QS4's,and EP175 sub,my room is 15x13,my receiver is a Sony STR-DE945,110x5 with a sub low pass filter in it.How should I have my speaker setting on my receiver? Large or Small, If choose small,I can choose 1 of 4 settings ,60Hz,90Hz,120Hz,and 150Hz.for front,center,and rear speakers.Also what crossover frequency should I have my sub. I want to hear some bass come out of the speakers,not just the sub. I use my system 80%HT and 20% music.But I want to hear the big explosions and bangs through the sub,with some bass through the rest of the speakers.