HK is monopole all the way, you should be looking 3se's or Monitor se's for rear channels.
The Harman Group has some homogeny with their surround algorithms, only the all out THX units of old will mention dipoles.
http://manuals.harman.com/hk/Owner%27s%20Manual/AVR%20435%20OM%20FINAL%20(web).pdf,
this is a link to the 435 manual, on page 19 you will see a picture on the setup, which shows how the rear channels are supposed to be setup. they have made this much more vague than it used to be as they would simulate sound waves coming out of the rear channels defining the speakers as monopole.
But you can see that Dipoles are an after thought in the 2nd paragraph third column.
The Harman Group has some homogeny with their surround algorithms, only the all out THX units of old will mention dipoles.
http://manuals.harman.com/hk/Owner%27s%20Manual/AVR%20435%20OM%20FINAL%20(web).pdf,
this is a link to the 435 manual, on page 19 you will see a picture on the setup, which shows how the rear channels are supposed to be setup. they have made this much more vague than it used to be as they would simulate sound waves coming out of the rear channels defining the speakers as monopole.
But you can see that Dipoles are an after thought in the 2nd paragraph third column.