How loud do you like to play your music?

Raks, you said "When I played the Focal’s at the same mark, the sound was “uncomfortable”. That confused me because the Usher’s are more efficient than the Focal’s."

Actually, it's the other way around. The Ushers are much less efficent than the Focals. I made the switch in the opposite direction from you (from Micro Utopia BE's to the Ushers and there is definitely a difference in the efficiency with the Ushers needing considerably more power to hit the same volume level). So, if you set the same volume level on the Focals that you listened to with the Ushers, that explains why the sound was "uncomfortable". At the same volume position it would have been louder with the Micro Utopia BE's. So, it's most likely not a matter of the Focals giving you the fidelity you were looking for at a lower level.

Disclosure: I am an Usher dealer and a former Focal dealer.

Seconding Everest_Audio's comment, John Atkinson's measurements of the Usher indicate a measured sensitivity of 85db/2.83V/1m, less than their claimed 87db specification, while the Focal's are specified at 89db.

The usual confusion factor of 2.83 volts vs. 1 watt is present, but since both speakers are specified as nominally 8 ohms, and have a minimum impedance in the vicinity of 5 ohms, that is probably not significant in this comparison.

Regards,
-- Al

When I played the Focal’s at the same mark, the sound was “uncomfortable”.

As Ralph pointed out - distortion and particularly of higher harmonics is usually what makes the sound uncomfortably loud or just plain "uncomfortable" in small stereo systems.

Distortion can come on the source (a compressed Green Day or Red Hot Chilli Peppers CD), from your amplifier or from your speakers. Small speakers are most often the consistent culprit if you are using decent CD's. There is an article on Siegfried Linkwitz website about common midrange distortion and how it rises dramatically at higher SPL's.

It is surprising how loud music from real instruments can be without sounding uncomfortable but, for sure, consistent average energy above 100 db SPL is going to qucikly become uncomfortable. You can even cause IMD distortion in your ears at these high levels with midrange frequencies...although ultra LF bass frequencies do not become loud until you reach 100 db SPL...

Confusing...yes it can be.

FWIW - the Ushers show signs of compression at a mere 90 db SPL - so you can forget about clean 110 peaks that Ralph mentioned.

And the as for the Focals, well ouch the distortion from what might be the tweeter resonance is scary. I have always considered that tweeter to sound splashy or in your face - and perhaps that plot says it all...who knows.

I must add that the othee plots of BOTH the focals and Ushers are HIGHLY impressive - so I am not saying either one is not an awesome speaker - they both are!! However, I would not expect to be able to drive them hard playing a big jazz band or rock in a large room (as they aren't designed for this....horses for courses - don't get a bookshelf or a small monitor if you want realistic loud)