So the whole room is averagely wrong now? Including the places that didn't have any issues?
You in Auckland? If you want I might be able to pop round one day and measure the now flat room..
1. The 8D's go 'down' to 46Hz
2. The D denotes that they have active assist, which is an active EQ speaker EQ system that requires you to measure your room in several place.
Not that I would ever want to compensate for room acoustics with EQ.
Treating a physical issue with EQ is not they way I would approach it, it also will not address the primary reflections, at all.
I'm sure its cheaper that proper acoustic treatment though.