Kevin - I would consider my speakers full range.
Front - NHT 2.5i biamplified with a spec of 29Hz -3db. Each front speaker is also augmented by it's own NHT SubTwoi with a spec of 21Hz -3db.
Rear - NHT 1.5 each high passed through it's own Polk PSW650 28Hz -3db.
I run these speakers this way because when bass is coming from front left, I want to hear it come from front left. I have read and heard people say that bass is omni directional and I don't believe it. Just listen to good old straight stereo with subs in stereo and while listening unhook one and you will notice the difference. With my set up I can also make the subs mono or stereo and stereo is far superior IMHO.
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Otherwise for example, you're filling in the valleys from say the left channel speaker with bass from the right channel. That's different content!

Exactly what I want, left from left, right from right. This is especially true when playing DVD-A/SACD where bass can be coming from anywhere. Example would be playing something multichannel and a bass guitarist playing at your rear left and only the +80 HZ coming from that speaker and the -80HZ coming from a single sub in front of you in an opposite corner. It seems people spend most of their money on speakers to try and get this great sound stage with depth and width and then try and squeeze an entire section of frequency into one box in a corner. I went a different route with my speakers and IMO the BM on the 6ch input really hurts the potential for DVD-A/SACD through those inputs.
As a side note concerning this 20Hz figure. My youth was spent listening to lots of rock way to loud and this showed me something while testing the frequency response of my setup. I was playing individual test tones using the SPL meter to get readings. My 9 year old daughter was sitting in the room with me wondering why I would sit there and listen to these stupid sounds. Anywho when I start off at 20Hz I cant hear the noise only the various items rattleing throughout the house. I could feel the bass but couldn't hear anything until 30Hz. The same was true on the upper end with 18kHz being my upper limit. I mention my daughter because she could everything (20-20k)even at low volumes. My point is now I don't care if my speakers will play 20Hz or 20kHz at 120db because I can't hear it, but what I can hear in between sounds good.
Don't forget STEREO subs, it's worth it. SVS should love me