The virtues of using a matching, vertical center to your mains are well documented. Such things as matching the power handling to your mains, tonal/timbre characteristics as well as possible advantages in off-axis response over the horizontal counterparts. If you have the ability to place the M3 in its natural vertical orientation then this would not only be desirable but the most cost-effective solution as well.

Cheers!


I’m armed and I’m drinking. You don’t want to listen to advice from me, amigo.

-Max Payne