Thought I would add this to an old thread. I have a pair of these. I've since replaced them in my setup with some active monitors to free up some space taken up by the power amp, but I still use them when evaluating a candidate for a finalized audio master I've worked on.
These are designed as near-field monitors. The woofer is extended and pointed up so that the axis of the speaker cone is on the same straight line between the cone and listeners ear to increase dispersion and transparency in the close proximity of near-field listening.
They also are designed to provide detailed clarity of information about what is going on in a mix or master. To that end, they reveal more truth of what is going on in the content than any Tannoy Reveal or Behringer Truth model monitors I've listened to, and I also prefer them to anything branded M-Audio, Alesis or KRK. The 4206's don't have extended bass, so you have to be careful not to boost the bass artificially in a mix, but that's the tradeoff with any smaller monitors. You can of course also add a subwoofer.
The above benefits come at the expense of the fact that these speakers are quite forward in their rendition. For entertainment listening in a medium to large room, these would need a subwoofer, and you'll easily find other bookshelf speakers that have more "air", and are less fatiguing to listen to. On the other hand, for, say, computer speakers, these would be an very good choice, and would blow away most other computer speakers even standalone, but if you attach a decent 10" subwoofer, they would be killer computer speakers with the design optimized for near-field listening.
There certainly are better studio monitors (at higher price points) but for about $100 for a pair in good condition on the used market, these provide good value for home studios on a budget.
M2358