What are they? Two of them look like slightly odd, interesting designs.

The 2 smaller ones are Epos. The larger ones are Norman Lab model 11s.

So, it looks like one of the Epos uses two front-firing tweeters. correct?

The 3-way Norman Labs looks like it uses a large dome midrange and two woofers- or is there something I'm not seeing?

1 10 inch woofer. The tweeter and mid is under the black guard. You would think that the guard would muffle the sound; but they sound very well rounded. They will crank.

The Epos use 6inch woofers and 1 inch alum. tweeter. the 3 speaker is a 2 1/2 way. It uses a 6 inch mid also.

so that floorstander is also Epos?

i like the look of the Normans, they mean business. never heard a pair, but i'd sure like to.

Yes the floorstandings are Epos too. The Normans rock.