Has anyone added a small subwoofer to 2 channel and been thrilled with the result?


The subwoofer can of worms.
I’d like to add some bass to my otherwise fine 2 speaker setup and have limited space so perhaps a single 10in?
After a few weeks of research the only conclusion I can come up with is - everyone agrees they have to be setup properly. Every brand and technology has their own following and most recommend using 2 (which I don’t want due to space concerns). My room is 12 x 13 ft with box raised ceiling.
After much research, these are the subwoofers I’m trying to pick from, for various reasons:
Rythmik FM8  - lots of hifi fans
JL audio e110 - fantastic support
REL T/9i - sort of a gold standard
KEF R400b - interesting technology, makes me grin. 

I've never heard any of these.
System:
Hegel H160
SF Concerto speakers on stands.
Ben
casteeb
@stuff_jones  kahlenz provided a good explanation.  Suffice it to say that in any of my systems if there is a bass line coming from a particular spot in the soundstage it images correctly and I have no problem picking it out.  Most of the frequency range of the bass guitar is above where I have my subwoofers filtered off at (around 40 - 80 hz depending on the speakers) so most or all of it is coming through my speakers.
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Everybody will expound their favourites, so there is no real right or wrong choice of make. I would imagine that as long as they are not  put on "loud" almost any make will be satisfactory and demonstrate improvement. As someone posted above, 2nd hand ones are very cheap and you can improve at no great incremental costs as you see fit. I did not believe in subwoofers some years ago, basically because I had not heard any. Now I have a minimum of 2 even in small rooms, but on VERY low.
I use an older Mirage dual 8” sub with a pair of Silverline Minuets.

The sub is turned down to barely kick in and fill out the lows. I used speaker level inputs and cut the lows from the monitors. The system is for bedroom tv sound.

I’m betting you will enjoy and appreciate a sub with your monitors. Worth a try...

Best,

gary
Yes Parts connecxion May still have a few left.
the Monitor Audio W-12 subwoofer uses a ceramic coated 
driver very fast and has Bass room correction 
was a $1600 sub retail. $950. Very musical.
I did upgrade the Fuse, built A Furutech RCA,as a decent power cord for a subwoofer,Pangea -SE  a very fast musical Bass performer.