Is there any harm in using a predefined crossover on your AVR and setting the crossover on the sub to the same value to get a steeper crossover? What I have found is that when using a 80hz crossover the sub still gets way to much info. For example - I have set my crossover to 80hz and unplugged my mains, I can hear low voices and other sounds coming from the sub. My thinking tells me this is a bad thing as it makes the sub easier to localize. Where as if I run both cross-overs and get lets say a 24db slope as opposed to a 12db slope it gets rid of those sounds. Any input would be appreciated.