Hello everyone, My name is Dave Andrews, and I'm new to this forum. I'm in the process of building a pair of the 18" Dayton HO subwoofers (with 4 ft^3 Denovo enclosures). I'm really enjoying the build so far, and am now interested in attempting to build a pair of 1099 kits. Obviously, I'm a noob with regard to this stuff. Here's what I've currently got: two 18" Dayton subs, both powered by a single Behringer iNuke6000DSP A ~20 year old stereo Denon receiver (it has a set of pre-outs that I use for the subwoofer) A simple pair of bookshelf Polk Audio speakers. I want to replace these with the 1099's I'd like some help with a few questions on the 1099 speakers: [list type=decimal] [*]In the '1099 Consolidated Information' discussion, it seemed to indicate that these speakers should not be run full range. I think it indicated to operate these speakers from ~80Hz to 20khz. Is this correct? If so, how do I limit the low frequency operation of these speakers to only 80Hz? Am I correct in assuming I'll to run the pre-outs from my Denon to some kind of equalizer and then feed that into an amplifier for the 1099's? [*]Would it be a foolish idea to consider running the 1099's with a tube amp? I'd like to try building a tube amp kit, and I've heard they work well with efficient speakers. I only use this system for music - no movies yet. [/list] Any help you can offer is greatly appreciated! Thank you, Dave