I don't think sub frequencies are sent to the center channel.
Subwoofer with center channel
Does anyone here use a subwoofer with a center channel? I was watching a Riverside concert dvd today and was surprised by the amount of content being sent to the center channel. My Sonus Faber center speaker sounds good, but I wonder what I might be missing. I have a decent NHT SubTwo I subwoofer that I'm not using. Maybe I should give it a try..