Dynaudio Sub 6 vs Sub 18s vs Sub 3 with Special 40s

Never heard a Dyn sub but they never comes up in subwoofer discussions. Maybe it’s overlooked for some reason, overpriced?? Never seen one being displayed in a store either. At least the ones I’ve been to it seems to always be REL or JL. Dunno. 

JL makes a damn nice sub even their cheaper ones. I’ve been running a Rythmic for a few months and it’s really nice. Does not have the punch you in the gut impact of the JL though but I think blends in a little better. Need to get my JL Fathom fixed then I’ll run both at some point. 
 

then there’s the littler guys subs like JTR that people just seem to rave about. 

Thanks mofojo - I should be specific in saying also that I am interested solely in music and making my 2 channel system a 2.1 system.  Integration and musicality is absolutely the most important thing to me instead of earth rumbling base.  That said I'll certainly taking a look at JL but I've heard REL is typically better for home theater applications.  Anyone out there go down the Dyn Sub road?  I've also heard that the Golden Ear SuperSub X might be comparable - any thoughts with my system in mind?  Once again thanks all!

I auditioned the special 40 and the Evokes and picked the Evokes (so that you know the differrence). My amp is comparable.

So far my sub experience has been a mixed bag. I tried the SVS and Klipsch entry(ish) level models, placed them everywhere and found that with some music it makes a net positive difference. Otherwise it’s a sonic mess. So I am not sure your solution is a sub, The Special 40s are even more musical and complex than the Evokes and it is not easy to integrate them without an amp with built-in crossover control. If the NAIM does that, that’s a big plus.

I found that the greatest improvement for me is the source, my turntable, the vinyl, and I am considering the DAC. I will try higher-end subs (KEF, REL) but unless I listen to perfect and "lucky" arrangements where the drum finds its own space in the soundstage, I am very pessimistic about adding a sub.

on why you never hear about Dyna subs

2 opposing statements cannot be true, in the same time, such as:

• Dynaudio speakers have a great bass, pretty much as low of a frequency as you need, 98% of time
• You need a sub or 2 to go with those speakers, it will absolutely transform the sound, and do XYZ

I still don’t get why you don’t hear about Dyn subs? 
 

are they comparable with the JLs, SVS, Rel and other big dogs?