Subwoofer Suggestion

@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

@audioman58 
Im in Philippines, if I order from the United States I'd have to deal with the customs here. Also, are you saying that a single Sb3000 is better than dual sb1000 or pb1000?

Dual subs are better than one. Subs output into the mid-bass. A single sub collapses the bottom so the soundstage is like a truncated and inverted pyramid.

Most sub installations are abysmal. It takes skill and work to integrate properly. As a pal once opined "EVERY other  sub I've heard just boomed." 

Hello quality bass not one ofthe above mentioned is in itsleague.
if you can squeeze $1500 for an extra $500 you can get two,
 one is much more power Full and tunefull you are missing the point 
please go to Svs website and read up on all this hav3. To offer NONE of the others hav3 ,as well as the great app you can run from phone or tablet 
and look at all the 5 star rewards it is a no brainer .i owned a audio store for years 
this. 13 inch sub power house would cost 3 x this only 4-5 years ago 
buy one ,then if you felt you needed another get one next year .
trust me it has over 2,000 watts peak and very high current mosfets on the outputs.just take the time to read the full information sheet and reviews .
truly nothing close in terms of performance technology unless you have
$2500 for their ultra, their 4000 doesnot even have have the Split pole piece 
only the 3000 and  ultra. If music is most important get the show sealed box
ported if more for movies ,even ported is very good and more slam 
no ported box is as accurate as a good sealed but I hav3 played explosion with the 3000 SB literally shake the pictures and vents in the room !!