Originally Posted by Aiml3ss
Don't know if this has been covered but how big of a difference is there between the R300's and LS50's? I'm about to pull the trigger on the LS50's but I've read some people that think the LS50's could benefit from more bass... which the R300's apparently have. I will be using these speakers for 80% music (Electronica, Rock, Jazz, basically everything except country) and 20% movies.
The LS50 and R300 are fairly different speakers.
The LS50 has KEF’s current most sophisticated wideband concentric driver. Also, it has a cabinet designed for low diffraction. It also has the psychoacoustic advantage that one knows "all the music" is coming from one spot.
The R300’s concentric driver is a dedicated mid-tweeter that does not cover the bass range. That configuration has some benefits in treble reproduction at high volumes, just because the waveguide/cone will move significantly less than one playing an additional couple octaves of bass. The R300’s dedicated woofer will also allow it to play louder without strain. However, unlike the LS50 the R300 has a cabinet seemingly designed without regard for diffraction: sharp corners, no felt on the baffle or other diffraction-mitigating measures. So it may be more a fatiguing speaker over time. (It won’t be as bad as a speaker with a sharp-edged cabinet and flush-mounted tweeter, just because the tweeter's output will be less when it "hits" the corner of the cabinet.)
Which is better? Honestly, no idea. Between the two, my personal pick would be the R300 on entirely different grounds: it has a grill, whereas the LS50 does not.