Hello to Everyone
First of all thank you very much for this extremely interesting source of audio informations.
Second, I am very beginner but eager to learn as well.

I understand that when the centers of emission of drivers are not equally distant from the listening point they must be time aligned.
1) Is there a tolerance on this distance difference ? an acceptable gap ?
2) How do you perform this alignment ? actively with an active crossover or passively ?
3) Is this issue overrated for home applications ?

Thank you sincerely and kind regards,
Gino