A full range speaker?

Many people have noticed something special when they add a subwoofer to their system and have remarked about it here. It seems to add more than just bass. People say things like it adds "air" or makes "everything else sound better." You can only hear at best down to 16 Hz. But you can feel right down to 1Hz if the pressure is high enough

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Agree with this excellent post. 

Troels mention this **air movement** volume as having the feel ofa  deeper bass than what is  actually on the graph. 
I'd rather have dual W22's than a  subwoofer. 

That range is from 26hz to around 12khz including harmonics, but the speakers that can go that low are few and far between

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I've looked over every option from Seas and Scanspeak

Every woofer that goes below 30hz, has a  paper composite cone.
My hifi journey all began with paper woofers. I am trying to avoid this paper woofer resonances.
In my experience the magnesium material cones offer best dampening and cleanest upper bass fq's. 
The Scanspeaks offer a  deep bass kick, Seas Mag's superior upper bass/low mid fq's. 

Note carefully what Troels say here

**The edge coated driver....but it does make things sound **better** than it ACTUALLY SHOULD,,,as is sometimes the case with drivers displaying significant linear distortion ,,,which can sometimes be SEDUCTIVE,,but none the less ,,,DISTORTED...
Vandersteens and countless others,, B&W.s , come to mind here.
**Yeah I’ll take em...** Get home,,WOW , love em,,,6 months later,,,haha,,1 years later,,,**maybe I should upgrade or change labs..** haha.
Eventually our old friend,,or should i say ,,fiend,,,, the Fatigue factor will come around.
happens all the time.
Why?
The Seduction factor got the best of ya.
Not once have I ever felt even the slightest faigue with the magnesium cone mids.
Purchased 2004, and believe it or not, had the Thors up for sale at $900, with new Millennium tweets.
man would that have been a major mistake...
More than likely when I recover from the **Vox Project** I will swap out a W18 for a W22.
Not sure if I;’ll go W22E001 or the new W22 Graphene.
have to look over magnet weight, lowest hz spec.

http://www.troelsgravesen.dk/SEAS-W12CY006.htm

There 
the 20hz-40hz, 
Ain't worth the trouble\
15khz,,, yeah like we can all identify these 15k-25k hz's when  struck by a  instrument,. 
I'm telling  ya, thats all bogus snakeoil
40hz is rock bottom, 
12khz is top of Mt Everst. 
above 12k is  for outer space astro-nuts.
Below 40hz is for cave dwellers.

Thankfully, you are not in charge of anything. Go on, keep throwing money at this trying to cobble together something without ANY clue as to what you are actually doing. It is great entertainment watching you fumble around cluelessly. If you had saved all of the money you have blown in the last couple of months flailing about, you could have actually bought something that sounds good, designed by someone that actually knows what they are doing. By all means though, carry on.