Which speakers did you find bright, fatiguing or just disappointing in some way?

OP:   Klipsch LaScala's.   Purchased new back in the 90's.   While it is a great speaker,  it was to fatiguing for my ears.

hmmm, well as I got older and am losing my hearing the Bose 901s are sounding better and better (still need a sub of course).

Focal 1038Be 
I spent about a month or so and they never felt relaxed enough. 
My former speakers of 15 years have an aluminum tweeter and now I have the Wilson Sophia 1 with titanium.  I suppose the beryllium isn't for me.

My worst experience with Klipschorns was hooked up to the Adcom monoblocs.

 Just a bad combo, it made me grit teeth, and my ears hurt, not from being loud, but from super harsh treble.

   Asked for an amp,change, told me come back next weekend, and the weekend after that.

 Next amp was a Steve McCormack, unsure of model, sounded amazing. Treble was no where near as brutal as the adcom.

following weekend was the Carver silver seven monos,Not the ones with the 40 tubes, but the ones with only the meter, and shaped strange.

 They were also great!

Had for years B&W 801 with Classe CAM 350 Mono`s. Good for that time period, but the massive bass was not quick enough.
Now 2 Westend Tube Amps and Gauder DARC 200.
Simply perfect and utmost easy to setup. No-brainer for people like me, sitting in my room on different locations and having still always the same excellent sound.
Justmy2cents