Tilting up or down, toeing in or out, moving closer or further apart, back or forth, etc., will affect tonal balance - and equipment and room acoustics will have a big effect. Whether there's a benefit depends on your preference. Whoever recommended tilting back probably noticed a positive effect; you may or may not. Another way to look at it is: if Audio Physic thought it would be a benefit, they would have incorporated it.
As far as titling back the speaker to "align" the drivers in order to increase the distance of the tweeter to that of the lower driver in an effort to get the sound waves to the ear at the same time is probably not going to be of any significance for the Virgo. The drivers are so close together that it may be a futile exercise - moving your head up or down a half inch will have practically the same effect.
Nothing wrong in experimenting, though.
As far as titling back the speaker to "align" the drivers in order to increase the distance of the tweeter to that of the lower driver in an effort to get the sound waves to the ear at the same time is probably not going to be of any significance for the Virgo. The drivers are so close together that it may be a futile exercise - moving your head up or down a half inch will have practically the same effect.
Nothing wrong in experimenting, though.