Best Loudspeakers for Rich Timbre?

Yes the Joseph audio speakers I have heard at shows do provide a very clear window into the sound. Always a fave of mine at shows. Audio note also more along the lines described for Devore.

Ohm Walsh are also very good at not coloring the sound and just allowing whatever is naturally there to come through.

Spendor, Reynaud

Agree on the Tannoy Prestige series speakers.

Well, to me there is a problem with this whole notion.  I mean, different instruments will their produce their signature timbre at different frequencies.  Is this not correct?  Wouldn't a flute's timbre be reproduced at a higher frequency than a cello's? 

If this is the case, then I'm not sure it's wise to go for speakers traditionally considered to have a "warm" sound, because that may entail being rolled off in the high frequencies, which might auger against the ability to accurately render the timber of a flute or piccolo. 

It seems to me that one should look to acquire speakers with the most accurate response over the widest frequency range.  Now, if one only listens to a certain type of music, say for example, chamber music, then it might be possible to pick a speaker based on it's abilities in the associated frequency range.

+1 @mtrot  

different instruments will their produce their signature timbre at different frequencies. Is this not correct?

It seems to me that one should look to acquire speakers with the most accurate response over the widest frequency range.