When I have a receiver that doesn't have a sub pre out and it has a normal speaker terminals how will it sound when I connect the wires to the subwoofer and out to the bookshelf speakers? Will it have a crossover and the bookshelf speakers won't play as low as if it was connected directly to the receiver? I have a Sony SA-W2500 subwoofer and I was wondering if there is a crossover on the sub if you connect speaker wires to the sub from the receiver and then the sub to speakers left and right speakers. I' am not talking about the crossover dial knob that adjusts from 200hz to 50hz btw. I head someone said it has a build in crossover so it will bypass bass on the bookshelf speakers when you connect it the way I was talking about.