My room is a pretty average uk living room, essentially a concrete box, apart from the ceiling.
My couch is also a heavy metal framed leather affair.
I also live in a semi, so have neighbours to think of too.
I have a single Mono+, which delivers plenty of bass, maybe not as low as some on here, but I’m happy with it.
Due to the room I get very little TR, if any.
I’ve built a boss platform for the same cost as another mono (if you take the minidsp out of it, as it’s not required for it to work) and it delivers TR in spades!
Would I get any more TR with a second sub ?, possibly, but I doubt it.
VNF subs and the SPL’s required are not really an option either with next door to consider.
Which brings me back to the boss, It does it’s job very well, I can’t compare it to buttkickers or crowsons, as I’ve never owned them.
For me personally, From the limited use it’s had it delivers what I was after/missing and adds so much to the immersion when watching a film.
I’d encourage anyone thinking about it, to give it a go, it might just deliver what your missing without the expense of buying multiple large subs.
Also, Hat’s off to the guy over on AVS that came up with the idea and shared it.