A full range speaker?

This link has a good visual along with brief bit well rounded explanation. You’ll notice that the instruments listed are set above a grand piano keyboard for reference.

I'm inclined, given the money I spend on my equipment, to want to hear all of the notes played so that I can feel the artists full expression of the piece they are playing.

An aside: You didn’t need subs for Rock until the Synth came along. But then you didn’t need 32hz until the Hammond B-3 became a regular in Rock, and before that 40hz was enough. 

https://www.psbspeakers.com/the-frequencies-of-music/

The Jantzen 412A was a full range speaker.  

Janszen not Jantzen, sorry.

You all have to understand that there are very few speakers that can project under 80 Hz with authority in a normal sized room. The specs are taken at 1 meter. Anyone here listen to their speakers at one meter? This does not even account for what the room does and most rooms are awful when it comes to bass. To me a full range speaker does 100 Hz to 20 kHz. Below 100 Hz is in the realm of a specialty system designed specifically for 20 Hz to 100 Hz with room correction (really speaker correction) and enough power to handle the correction. 
There is only one speaker made today that is truly one way, flat between 100 Hz and 20 kHz and with a perfect dispersion pattern minimizing room interaction and I'll give you one guess what that is. Hint; it also has the lowest distortion of any speaker and the fastest transient response. 

mijostyn4,687 posts07-17-2021 11:40amYou all have to understand that there are very few speakers that can project under 80 Hz with authority in a normal sized room. The specs are taken at 1 meter. Anyone here listen to their speakers at one meter? This does not even account for what the room does and most rooms are awful when it comes to bass. To me a full range speaker does 100 Hz to 20 kHz. Below 100 Hz is in the realm of a specialty system designed specifically for 20 Hz to 100 Hz with room correction (really speaker correction) and enough power to handle the correction.
There is only one speaker made today that is truly one way, flat between 100 Hz and 20 kHz and with a perfect dispersion pattern minimizing room interaction and I'll give you one guess what that is. Hint; it also has the lowest distortion of any speaker and the fastest transient response.


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AS I guessed earlier
The 20hz-40hz is nothing but pure fantasy.
If you wish to believe in the 20hz-40hz, just great, Don't try to push YOUR fantasia agenda on to my ACTUAL REALITY/beliefs

Not even Dr carlosn labs tests could convince me of the 20hz-40hz as **real** music, .
Not even his science.


I ain't buying.
40hz is all I'll accept at the very bottom.
60hz is where i really begin to say **Music starts here*.

The real test of any speaker, From Bose to Wilson's $975,000 speaker, is how are the sonics in the 100hz-2k hz region.
This  is where all distortion/colotaion  is comming from.


Which is why i choose Magnesium cone material for my dual mids.
This material shows near zero coloration/distortion. 
The only complaint is the low sensitivity, but as with all things its a  trade off. 

= It is what it is, 87 db sens. 
You just have to accept this spec as part of the package.

Which is why i know fora  fact I would not like any speaker comming from Wilson's labs. 
 Wilson uses Scanspeak's, which have rock solid punch, but has a  flavoring in the  lower  mids that i just can not live with, = Grate my nerves. 
Magnesiusm is the New Midwoofer. Surplanting the old paper composites. 

I do use a paper  tweeter which matches any dome tweeter on the market. 
This tweeter has zero distortion, zero coloration. 
Tweeters is not the issue in speaker coloraion, Its the midwoofers where all these nasty resonances come from. 
Fatigue comes from midwoofers 100hz-1500hz region.