Triangle Speakers

I picked up a pair of Triangle Titus (the mark II version) speakers. I loved the detail and sound staging, but I found the midrange a bit bright sounding with with NAD C372 amp. I think this means that the upper midrange was being over-emphasized or the lower midrange was being under-emphasized. In any case, even with a sub the tonal balance didn't sound quite right to my ears.

My question for folks here: would I have a similar problem with Titus' floor standing speakers? In other words, is the brightness (when coupled with my amp) part of the Triangle sound or is it a mini monitor thing?

Thanks in advance for any advice.