Finally got around to comparing these two. I had previously listened to the ELAC and let bias run my comments - I loved Andrew Jones' Pioneer branded speakers for the value they represented, and as such, did not put the time in to really listen.
Here I have each speaker connected to its own Emotiva UPA-1 which were used as the switching mechanism to listen to one speaker or the other.
The Canton's sensitivity was a bit lower, so it needed to be turned up about 1 - 2 dB to match. However, the Canton was much more willing to play loudly - the ELAC's tweeter really started to sound strained as volume increased. So I tried to keep the volume at or slightly below 70 dB from my couch.
But that's really where any in-depth reviewing ends with the ELAC. As I commented before, the ELAC sounded good on axis, but as soon as you move one or two seats over, there is a significant timbral shift. Sounds like the ELAC is playing through a tube, the further off axis you go. Perhaps if it was 1980, the ELAC would fair better, but it's pretty disappointing to hear that anyone today is designing a speaker with no regard for off axis performance.
My initial impression of the ELAC was very positive, because on axis, there is excellent frequency extension for a soft dome tweeter. But it seems that is the price being paid, you gain sibilance in brass and cymbals that is not common in soft domes, but you lose the ability to produce consistent sounds across the width of a couch.
Additionally, the Canton being only slightly more expensive at MSRP (and often found on sale) was a world away in cabinet quality. Knuckle test nearly embarrassed the ELAC on its own, but when you factor the rounded cabinet and quality painted finish of the Canton, the cheap feel and likely easily scratched vinyl wrap on the ELAC really fall short in comparison. It should be noted that the Canton series is roughly 5+ years old with the ELAC being brand new.
I listened to most of Tool's 'Fear Innoculum', various Rush, even Adele, and every single song was a landslide towards the Canton. Even with bass notes, the Canton could play lower and sound much more detailed.
Just to be sure I wasn't being unfair in some way, I called upon my associate with far better ears to offer his opinion:
As loyal as he is, he too wanted to be sure and got up close:
Even to his superior ears, both Bass:
And High frequencies sounded better:
Sebastian agreed, the Canton was the clear winner!