What are the specs of a full range speaker?

I don't believe there is a formal definition of "full range speaker." As such, it pretty much means whatever the person using it wants it to mean.

At the least demanding end of the spectrum it could simply refer to any speaker system that is designed to be used by itself (i.e., not specifically made to be used with a subwoofer, etc.) Such a definition would include speakers with limited bass below 50 or 60 Hz.

At the far end, one can insist that a "full range" system needs to solidly go down to 30 Hz or below.

A similar argument can be made at the high end. As such, I consider the term fairly meaningless.

Ultra-low frequencies have the power to shake the walls, and physically
pressurize the room. It adds to the visceral experience of say, a really big
diameter pipe.

High frequencies do none of this. Their reported presence in an audio system
just feeds into psychosomatic twitching of true believer's brain.

High frequencies do none of this. Their reported presence in an audio system just feeds into psychosomatic twitching of true believer's brains.
Muralman1 (System | Threads | Answers)

How do you know this, Vince? Does the absence of a readily discernible physical phenomenon like shaking walls prove the non-effect of high frequencies on human experience?

You don't believe that human inner ears or human sinus cavities somehow process high frequencies...even as pressure differences? I believe they do.

Perhaps our friends Guidocorona or 84audio might be able to share some insight.

Maybe it's because I grew up attending a Catholic cathedral on Sundays. The organ play made it all worthwhile. I loved both the huge bass pipes to the ethereal strings.

Away from church, for twisted fun, I tortured the neighbors Shitsuitsu with a dog whistle. It was cruel, but I did learn dogs hear more than we do.

I once read the reason we hear between 20 and 20k, is because that encompasses all that is relevant to our survival. I'm sure that explanation doesn't wash with birds and dogs.

I'm one of those extremes that hears way high and soft. I don't know how many times I hear bright and grainy, when other listeners just hear highs. That leaves me agreeing with the dog, hearing UHF is not all that it's cracked up to be.

All I know is most systems are truly deficient in the 20-20k range, I don't know why anyone would want to perfect what they can't hear before they get what they can hear right.

Maybe it's because most people have trouble hearing above 14Kz they don't hear the deficiencies that their systems scream out between 14Kz and 20Kz.

Pbb has a good point, what is the most reasonable range, which he says is 30hz through say 16Khz. Hoover joins in with agreement and is hapy to see someone actually post this. My speakers go to 40hz and so far have been satisfactory enough. IOW when I play the New Orleans Jazz complitaion and another compliation Blues cd, both very high quality sound recoding, the bbass fills the room. Thats at between 1/4, 1/3 volume on my 40 watt tube amp. But considering I mostly listen to classical, i'm now ready to get at those fq's from the bass, cellos, tubas, timpini's, the 30hz-40hz. IOW I want a new experience from my classical with that added bass. Now the 20-30hz's I'll be missing. But as Pbb mentions just how important are these super low fq's, how much will they be missed? How often in classical are these fq's there? In solo piano there's not much below 40 I'm sure. Yes the piano can go as low as 20, but how often do composers work in that low fq in piano scores and even in orchestral. Rarely.
And the upper range, who knows from human hearing when a tweet rolls off at 20hz, and other tweets at 22Khz? I'd guess on the jazz and blues cds there is more going on in the 20Khz+ range than in my classical. But those tweets that go up to 22Khz+, are they delivering quality superhighs, 22K-25Khz? Are are the highs sort of "fake" sounding, tinsel-y/ metalic, IOW fatigueing? That is do tweets that go as high as 25hz+, is that upper range for real? Also is they are designed to go too high, then how well do they meet the mids of the lower drivers? Which is why my seas' tweet does not sparkle, but instead has a bigger bottom end and meets the midwoofer with seamless resolution. I do not lmsii the 22hz+ that the Seas seem to not deliver on.
So I'd say full range is 30hz - 18Khz as Pbb mentioned.
I'll read the other posts here. Some great comments are being made and we are carrying audio one step further to a PROPER understanding. For too long audio knowledge has been in the dark ages, and audio labs have taken full advantage of our ignorance and pushing its bull on us.