Okocza,
What you might be equating to warmth is the forgiving nature of the Focus line as compared to the more revealing nature of the Contour series. The Focus 220MKII has been improved in the area exactly as you had mentioned but is still going to be more forgiving of lesser electronics and recordings hense the "warmer sound", the Contour 3.4 will be more revealing of the electronics and recordings as you would expect from a more expensive speaker and if the 3.4 is not paired with the appropriate electronics, such as many lesser receivers, they will possibly sound a little thin and cold, but it is not the speaker rather the electronics as the issue. The 220MKII can be paired with many lesser receivers that the 3.4 cannot simply because of the revealing nature of the better speaker.
What you might be equating to warmth is the forgiving nature of the Focus line as compared to the more revealing nature of the Contour series. The Focus 220MKII has been improved in the area exactly as you had mentioned but is still going to be more forgiving of lesser electronics and recordings hense the "warmer sound", the Contour 3.4 will be more revealing of the electronics and recordings as you would expect from a more expensive speaker and if the 3.4 is not paired with the appropriate electronics, such as many lesser receivers, they will possibly sound a little thin and cold, but it is not the speaker rather the electronics as the issue. The 220MKII can be paired with many lesser receivers that the 3.4 cannot simply because of the revealing nature of the better speaker.