All Image speakers require an extensive run-in period before they perform at their best.
It is very important to know whether a pair you intend to audition have been played for a minimum of forty hours by your Image dealer. Most times, they will not be adequately run-in.
New Image speakers straight out of the packaging have a tendency to be slightly forward in the midrange and lack the expected warmth and fullness in the bass response Image is renown for.
This is quite normal and is a function of the loudspeaker suspension which, when new, is very stiff and non-compliant.
Though it's difficult to give a time frame, expect forty to sixty hours of use before you'll notice a marked improvement in the overall sound quality. Even after this time though, expect your Image speakers to get better and better. Bass is more dynamic and extended. Midrange is more natural and lifelike, and there's an apparent air and ease to the overall sound.