the smoothest sounding speaker

Polk lsim707  listed for 3,999...got returns for 1,400 that was with shipping n tax....Smooth  as  ice cream.....

Smoothness in sound to my ears has equally, if not more to do with lack of smear, low distortion and ease of reproduction. A sibling term could be that of liquidity, and combined these traits are found in particular in well-executed and horn-loaded, high efficiency speakers. Moreover, switching recently to a fully active configuration aided smoothness as well; passive speakers in general sound a bit “thicker,” softer and slightly more veiled compared to an active speaker set-up that is typically more transparent, smoother and with cleaner, sharper transient edges.

don't blame cd  or speakers for for harsh sound ,sometimes the problems are in amplifiers,many of them are tuned with harsh highs in order to make illusion of clean sound