Subwoofer Suggestion

it would be a great mistake to not check out the SVS Sb 3000 sub it has the most latest technologies
it is the little brother of the great ultra 16
at $1000 beats anything at $2K 
great app for adjusting your room 18 hz
and a dual voice coil ,meaning nice tunefull bass even at lower volumes 
and a 45 day audition, and they pay shipping very compact  and a 5 yr warranty won sub of the year in 2019

@audioman58 

Yeah I'm thinking of the Sb3000 the only problem I see there is that it wont have enough output for the room. Also there's no 45 day audition here in Philippines. If ever I'm gonna go the single sub though it would be either that or the PSA V1500.

Kilo how big is your room ,
land this sub puts out thunderous bass don’t think it can’t fill your room my room is 30 ftlong  by 16 wide 8 ft ceilings  I sit in the front seats are 12 ft away and I get plenty of bass and never coming close to using it’s output maybe 60% at most.
if you have the extra $$ the SVS ultra 16 Is Great  I was thinking in the future to add a second sub to bring more balance thevalways recommend 2 subs for all room s have nulls .the app for iPad 
droid is excellent  plenty is power 

@audioman58 
My room is 4m long by 14m wide with 3m ceilings. Well if the bass would really take a hit I could return the devialet200 in exchange for the ps audio m700. That would free up a lot of budget for the subs.

If you bought 2 they give $100 off give them a call 
and satin black much better buy you can get 2 for $2000
are you currently in the US ?  For now one set in the middle of the room would be plenty trust me.i sold a $1600 JL audio and bought this one after comparing my friends sb3000 .read up on it 
it has a dual voice coil only the ultra 16 has this meaning at low levels the center pole piece is used, giving you tunefull bass at low
volumes  then when higher volumes the outer part I’s used . Read up on it so many things like a 52 bit processor which makes it 
very accurate and huge magnet ,the app has a bunch of setting you tune the bass from your seating area , and has programs and a usb Mike you can buy to fully eq your room but some learning curve if you want it perfect , it is small but 52 lbs