I have set up a surround sound set up consisting of logitech z 2300 and klipsch pro media 2.1 making the front speakers and subwoofers and i have a logitech x 540 making up the center, rear and side channels. Even when i turn the side and rear channels up all the way from the realtek audio manager i still can barely rear anything coming from those speakers unless my ear is right up against them. Is it the speakers or another factor? Is there a better audio manager that will allow me to boost the volume further?