There's a lot here about the limitations of single driver systems- problems with high frequency response and/or lack of detail, problems with bass, particularly with smaller horn systems....I've recently gone away from floorstanding speakers. I can't deal with trying to haul them around, and there are problems driving multi-driver speakers with strange loads with SET amplifiers. Hence, I'm looking at a high efficiency design, and I'm interested in Zu, particularly the Credenza monitor. So, it lacks bass- what, exactly, is wrong pairing it with a subwoofer? When I went to monitors, I lost a ton of bass. My room is large, on the order of 24x20, with 12 foot ceilings, so I expected to lose bass. Not as much as I did; the difference was striking. Just wasn't enjoyable. So, I was forced to buy a subwoofer. Now, I don't know how I ever survived without one, even with big floorstanding speakers. What's the big problem with putting a high eff speaker that may be a little lacking in the bass department with a subwoofer? Seems that Zu has tackled some of the treble issues in Essence with the ribbon tweeter. Bass? Nice sub, you've got it all and more. Why such little consideration to that option? Just curious- I'm new to high efficiency speakers, and I want to take the plunge, but the more I read, the more confused I get. There's so little middle ground with horn drivers- people seem to either love them or despise them. Like to hear some more opinions.