Does such a speaker exist?

First thing that popped into mind are used Acoustic Zen Crescendos. Best of luck.

I can think of one 1 speaker that will fit your bill. Depending on your room and electronics of course. But the Marten Design Django XL would be nice.

The bass might be a bit too much though.

Zd542: Focal SM9, it's on a totally different level...

Also haven't heard this one myself, but try Genelec 8351

I forgot to mention another speaker which could be worthy, the Evolution Acoustics MMMicro One. I've heard them & they have amazing bass & sound punchy. Resolution of course is excellent & the speakers disappear and throw a holographic sound stage with the right upstream gear & cables. My previous Marten Coltrane Alto's were more extended in the frequency extremes, but for such a small speaker...remarkable.

Zavato --

If you can find them 2nd hand: S.P. Technology/Aether Audio's Revelation or Continuum. I'd say these speakers have the whole package; coherency, dynamics, musicality in spades, very open-sounding, capable of high SPL without strain, and bass extension with both models in the 20's.

Very importantly they also exhibit a convincing authenticity of tonality that lends body, texture and a tightly woven "core" to voices and instruments, a trait all too rare with even very expensive speakers.

This speaker brand is one of the hidden gems of high quality audio reproduction, but sadly they're out of production - at least, as is.