Subwoofer to add to my Zvox 580 speaker

I am looking for advise for a subwoofer that I will place in my 12x24x8 livingroom with one opening to a hallway. I will place this sub in the corner behind my tv and console. Will the M8 do or do I need to step up to the LFM?

For a space that large, not to mention open to a hallway, I would get the LFM as a minimum.

I agree with Sanjay but you might get by with two M8s in opposite sides of the room. The LFMs probably move more air but the M8s might be smoother depending on the room and placement.

Thank you. I will look into the LFM's