Speaker recommendations

i guess I'm not that dissatisfied with my any specific characteristics of my present Triangle speakers but figured maybe incorrectly that if I upgrade to better speakers that sound quality would generally improve. So the basic point of this line of inquiry is what speakers do you folks know about that would provide a somewhat noticeable (I know that is subjective) improvement in overall sound  quality, particularly in the mid and high range for less than $2,000 (incl. used) for the pair. My listening room is about 12' x 16'

Investigate PSB synchrony’s. Sensitivity is a cinch for the 375BEE as well as there 4 ohms impedance, to add to that power handling is about as ideal. Safe bet they would be a very nice step to you and work excellent. PSB and NAD also happen to have great synergy together if lots of detail and loads of musicality is your thing. I take reviews with a grain of salt, there is no short of positive buzz out there. I have also heard the combination along with plenty of other PSB/NAD partnerships that I will vouch for in confidence. Mids and highs noted, those are just a couple of there strong points. 

http://www.psbspeakers.com/articles/TAS-Synchrony-Review
http://www.psbspeakers.com/products/synchrony/Synchrony-Two#heading-downloads
http://www.psbspeakers.com/content/110620153653-PSB_Synchrony_Series_English_Manual.pdf

hbdelrio1, you should have a look at (i.e. at least consider) the GoldenEar Technology line. Something like a Triton 3+ I believe would fit in your price range.

I thought I  might upgrade from my Triangle Altea speakers. I  was offered a pair of Canton Ergo 900 DC speakers at a very reasonable price but I won't be able to listen to them first. They loon attractive. Anyone have opinions about them.Thanks

I thought I might upgrade from my Triangle Altea speakers. I was offered a pair of Canton Ergo 900 DC speakers at a very reasonable price but I won’t be able to listen to them first. They loon attractive. Anyone have opinions about them.

Don’t rush into buying speakers without knowing the specs as they relate to your amp.

Canton specifies the Ergo 900 DC’s frequency response as 42Hz to 23kHz (-3dB). Their sensitivity is reportedly 88.3dB at 1m with 1W of input.
The Ergo 900 DC is a solidly built, three-way floorstanding loudspeaker sporting two 8" bass drivers, a single 7" midrange, and a 1" dome tweeter. While the bass drivers are made of polypropylene, the midrange and tweeter drivers are made of a very strong and rigid aluminum-manganese alloy.

The drivers are rather large and the bass spec indicates that they don’t go very low for speakers of this size. I can’t find any info regarding impedance curve. They are 4 ohm and your amp has power, but very risky to buy w/o an audition.