Quote Originally Posted by Panomaniac View Post
...(and who ever said they share a common baffle?)
In our last thrilling episode, our hero was backed into a corner, and...

Quote Originally Posted by Altec Best View Post
...It would literally only be a few inches from the mouth of the 511...
Followed by an (agreed with) suggestion they be oriented vertically, directly to the outsides of the 511s, next to the wall(s).

Perhaps a bad assumption on my part they'd be mounted on a baffle, so I'll rephrase that to "common plane of being".

Never mind that. The point was it would take a boxfull of caps (or the previosly suggested active delay) to stack up the needed phase delay.