Fortunately, I won't be using the pass-thru that way. I have an analog 60Hz crossover in my main left/right feeds, to direct sub-bass to my four subwoofers, so I can get stereo sub-bass when playing CDs etc. I set all but the front left/right speakers to 'small', with the 950 set to 'no subwoofer'. I REALLY agree though that the 950s set up is brain dead in not passing an unaltered .1 signal when the crossover is off. Warranty or not, if you don't have any failures in the 950 in the first weeks or so of operation, then the chances are very good it will continue to work forever. I would go in and rip that crossover out and fling it ! (assuming of course that your know what you're doing, electronically (-: