Lack in harmonic richness

Maybe the amp Ive heard Labs A-1 sound full. If you do change speakers go med to hi-eff in design and use a tube amp preferably a SET. A SET HI-EFF system is very full sounding, near real.

As far as I can recall I had this problem also with the previous speakers (Dunlavy SC V's) but with the Soundlabs it is aggravated.

Welcome to accuracy. Both the speakers you mention are highly respected for timbral accuracy - especially in the all important midrange. Both will have a tight lean low end (DAl's were over damped if I recall and some could even do a respectable job on a square wave - something few modern "impressive but one note bass" speakers can do!!)

If you are finding this sounds "thin and threadbare" then you clearly used to and obviously prefer a more colored presentation with some harmonic warmth. You may need a tube power amplifier on the warm side of neutral. A subwoofer may also do the trick as panels can be lacking in that bottom octave area and that can contribute to a thin sound.

Alternatively - give it some time - listen to your collection and concentrate on how different each recording sounds - the analytical precision may grow on you after a few hundred hours once you realize you can hear more detail when it is not overly warm with harmonics...I know it did for me.

These speakers were a long time favorite of Gordon Holt - so if you can be prepared to accept that your initial dislike is due to your not being accustomed to the taste of such ruthless timbral accuracy then I think this could grow on you...

Enjoy! You have awesome gear - I would not be so quick to change - or to dumb it down with warmth - just give it time.

Two cents...as usual.

BTW - in the above I assume everything is working properly. Given your extensive experience Chris - I simply assume that you would know if something was wrong and producing distortion.

There is a lot I could say on this topic, and the sadness many have spent emotionally and financially trying to decipher the all powerful and knowing "Audiophile" Code of "Accurate" listening experience, and the "Enjoyable" corrected listening experience. And unfortunately once you get into the money you have spent already on such a system being told to go backwards a few steps (and name brands for that matter) will not sit well.

My best suggestion is start by correcting any room issues possible, even if you gotta spend 1000 bucks to get a professional service to analyze your room, it sucks, but then you would have to step back and say to yourself why do I have so much money invested and I am not totally satisfied?

Or all you can do is work with the correction tools normally and boringly pointed to in this hobby..

Tubes- adding some actual "bloom, and harmonics" or as some see it "coloration" and "Distortion"

Cables- some feel is a waste of time and a joke, but mostly Cardas gets a good rep. for simple but expensive "Full and warm body" sound.

New Crossovers- with premium capacitors, which in my case has saved many systems with amazing difference in results, if you have passive crossovers... I would not doubt that even in a 20,000 dollar pair of speakers they have some caps that cost 2 dollars each.

Good Luck