Receiver with Selectable Bass Filter above 120 Hz? Many of the AV receivers I am looking at "fix" the bass filter at 80, 100, or 120 Hz. I am interested to know if anyone is aware of AV receivers to set the filter higher, i.e. as high as 150 - 200 Hz. Alternatively, are there receivers that simply pass the entire sound spectrum to the subwoofer (thru the sub-out) and allow the subwoofer to perform the filtering?