I also believe most AVR's these days have a night mode, or something like that which narrows the frequency range so your less likely to interupt people during late night viewing.

But if your getting rid of our surround setup, it is probably not going to matter.

M80s VP180 4xM22ow 4xM3ic EP600 2xEP350
AnthemAVM60 Outlaw7700 EmoA500 Epson5040UB FluanceRT85