Speakers on a cabinet .. open to suggestions..

REL G-2 sub.. It sound's like no room treatment or very little and the crossover point needs be BELOW the tuning of the port, not the same or higher.  The back wall you're talking about is actually the front wall. The open back is a big plus, too. You have to understand the standing wave is really getting a chance to work with LONG open areas like that AND high ceilings...

There is more than a 60hz bump I can assure you.. Just a little thinking about points of first reflection and a panel or two. Get some mic readings in the seated position. 

If you really want to fix the BASS issue, loose that type of sub.. You're much better off with drivers not pointing down and using the floor to close the slot..  A single Servo would out perform any of those types of subs for audiophile use. HT that's different.. They work just fine if you want to FEEL the bass. 

I think your compounding the problem, lower the crossover to 60hz or less, and get the subs away from the walls unless you go DBA or Swarm..

Go servo and you may change main speakers later on, BUT you'll be STUCK on a servo bass system forever. You just can't beat them, plain and simple. I've used every kind of BASS system on the planet too.. Maybe a few weren't from this planet.. :-)

Happy New Year..

So I’m not upset about the bass..

REQ shows the node at 60 he with a waterfall effect..hence the DSP..the room is actually pretty good otherwise..

My curiosity is about the speakers..

It’s a horrible place to put any speaker, but seems like a rear ported speaker is an even greater compromise.

So I’m looking for actual speaker advice…everything from “you probably won’t do much better “ to “speaker xyz does very well in that type of a position…”

Oh and the sub is crossed over at 34hz…

So…the current speakers sit in a 40” high cabinet..

Ain't no way to make that work.