Speakers for string Quartets

There tends to be a bit of false conventional wisdom about reproducing string quartet music because of the fact that we are dealing with four instruments instead of a full orchestra. String quartets can have significant dynamic range and the fundmental on a Cello is at 65hz. So while it is 20hz above a double bass, it's still well down in the bass range.

Apart from the PS Audio, any of those other amps in a big room are going to need a pretty sensitive/efficient speaker. The DeVore  96 probably fits the bill best.

I would also look at Harbeths but do not rule out listening to one of the bigger models like the HL5 Plus XD.

If you really want a stand mount speaker and are prepared to compromise on bass extension, the original Sonus Faber Guarneri is worth seeking out.

Suggest trying Harbeth SHL5+ with a lower powered amp & see what you think. I own them because they work well for me across many genres of music, but I enjoy cello and they certainly sing for that instrument - very musical down low, beautiful voicing and clarity throughout. Again, I’ve never played these with an amp putting out less than 40 wpc, but your needs obviously dependent on listening distance, volume etc.

Let us know how your thinking evolves and what you choose!

Have a great day

Quad ESL63 (better imo than 57 as improved bass response helps the cello)

I had a pair of Totem Arros that worked very well within those constraints, in a small to mid-sized room. The speakers disappeared, the center image was very clear, the mid range was beautiful.  The price was under $2K.  

Chief say, “totem pole provide many face.”
Best is “about face”.

Klipsch Forte IV.  Hard to beat for the intensity and body of bowed strings, especially once you get to the cello.