Piega loudspeakers

I have the Coax 711 and could not be happier.  Their midrange and treble completely won me over.  The bass is good, but I added two Rel subs and the overall sound just filled out and blossomed.  I think that is what audioman is also suggesting.  IMHO, they easily beat some more expensive speakers handily, especially with the subs.  

The ones I've heard at shops and shows sounded nice but outside my budget at the time.

I have a pair of Piega Coax 311s that I bought a couple of years ago to replace ~20 year-old Dynaudio Contour 1.8s (something about raising two kids leaves little time, money or energy for new stereo equipment).   

My plan was to move to a stand speaker since our living room doubles as the listening room.  After research and several audio shows I thought I was going to get a Harbeth.  But after listening in my room, the Harbeths were just a little too smooth.

My dealer suggested the Piegas and they had enough of the richness that I wanted but also enough bite to make rock tracks exciting.  My listening is about 50% rock (tending to indie and Americana but with occasional needs to hear some power), 25% jazz, and maybe 10% classical.  I played oboe through college, so that instrument needs to sound 'right' to me.  But I'm also playing a lot of piano and singer-and-guitar tracks that also need to sound good.

The Piegas worked well for me.  I'm driving them with a Benchmark AHB2 amplifier.

Listened long to the Coax 511 towers, retail $15.9K.  The only speaker with coaxial ribbon midrange and tweeter that I am aware of.  

Remarkably transparent with excellent imaging and sound stage.  A touch of high frequency artifacts but not too distracting.  

Worth consideration if you value a high resolution sound.  

I currently own speakers with ribbon tweeters and am moving away from this driver type as they always seem to be problematic in certain ways that I find increasingly irritating. Avanti mentioned artifacts and I think he is spot on and I have never heard a ribbon type of high frequency driver that didnt display some unreal sounding artifacts that detract from the obvious advantages of this driver type. Many of these more "exotic" drivers force the designer into a bit of a corner regarding crossover methodology. I would caution you to listen at length with a diverse amount of program material before buying. I also would suspect that a stout current based amp would be better than most tube type amplifiers. I have only heard this speaker at shows and have never had a pair in my room. I didnt really like them the various times I have heard them at shows. FWIW.