there are many differences between those models that make the Reference 3 a better performer.
Frequency response:
Reference 3 - 43Hz – 35kHz
R11 - 46 Hz - 28 kHz
Output:
Reference 3 - 113.5dB
R11 - 113dB
Harmonic distortion:
Reference 3 - <0.5% 40Hz – 100kHz / <0.2% 200Hz – 2kHz / <0.1% 2kHz - 20kHz
R11 - <1% 33 Hz and above / <0.5% 80 Hz - 20 kHz
Construction:
Reference 3 - Better materials / wood finishes, more bracing, one piece front baffle, heavier, hand matched drivers, performance results included with speakers
R11 - Lower grade materials / vinyl finishes, less bracing, no front baffle, lighter cabinets, mass produced, no testing
The Reference are hand made and KEF matches the drivers to within 0.5db. They are more than a significant step up from the R11.
„Hand Made“ !! Lol! R11 is made with legs ? Finishing on the reference 3 is better but not on par with my previous canton reference 7k which costs less! I won’t call both great.
„No front baffle“ ? Where are the drivers mounted on r11 then?
„Mass produced“ agreed compared to kefs own other speakers as they are mostly appealing and making sense to rational buyers
„no testing“ - not true. There are not verified at a British factory but none of kefs speakers would go to stores without testing
„Lower grade materials“ as long as they measure fine, the looks of the material doesn’t matter. R11 has materials which are enough for audible transparency.
Kefs engineering is almost the best at r series. Once you go up the chain, you are paying or overpaying simply because you like the brand and you like the looks.
In terms of distortion, r11 has lower distortion levels under 50hz at higher loudness levels as per measurements. You can eq the bass on r11 without it getting bottomed out like the reference 3. reference 1 bottoms out even at lower level than refrwrence3 meaning it won’t hold a candle against the r11. I bought it by mistake and since it became a financial burden I just decided to keep it as it doesn’t sound all that bad and they look super cool. I would rate refrwrence 3s looks 10/10 and sound like 6/10.
Reference 3 hands down is the worst speaker decision I made ever financially. Looks cool but sound very congested narrow and doesn’t dig deep for their huge size. Built is just fine nothing extra ordinary if you look closer. There are lot of cheap touches on looking closer on them.