A cheap electrostatics speakers will not give deep bass...
You will need an hybrid... They dont sell 700 bucks ..And you must add the acoustic dedicated room cost in money and in time...
Or an array of subwoofeers... My post spoke about 20 hertz..
Did you forgot ?
And my headphone are so good, better than ALL speakers i listened to in living room , you will need speakers way over the price of all my system cost : 700 dollars... Deep bass +strong dynamics = very good speakers then way more than cheap vintage headphone...
Thats my point...
It is you in a reverse of accusation who misread my post , clear for everyone, that some headphone as my K340 can give a soundfield at a cheap price that only costly speakers will beat...
A controlled acoustic room , i tune mine with resonators , CANNOT replace the speakers specs by the way only optimize then...If your speakers dont go near 20 hertz but only 50 , no room treatment will do more...
The use and meaning of a term is defined by HIS CONTEXT of use in the text where it is used...
A "fortune" compared to a cheap vintage headphone as the AKG K340 which sell for 100 bucks, is many times his price... Then it is clear for everyone with good faith that this metaphor dont means 50,000 bucks probably nor 500 bucks... more around many thousands... IT IS A METAPHOR...
All of what you have to do , instead of going on me for a "word" is asking...
I would have answer many thousands...
how much ?
It depend of the pocket of the people...
High quality headphone are not so easy to beat , on details, deep bass, holography, dynamics and listener envelopment If we add the cost of acoustic treatment and control... it is way more than my 100 bucks price for a vintage headphone..
Everybody knows that the cheapest solution is headphone.... The price of speakers able to go near 20 hertz +the cost of acoustic is way more...
now dont ask me the exact price it goes from 3,000 at minimum, if you are able to do all the acoustic by yourself as i did, to much more if you do not .., Which if we compare the two, a vintage headphone and Speakers+room acoustic , is for many people here metaphorically a fortune...
Case closed....
made my point: I vehemently disagree with your statement! I absolutely can reproduce such frequency responses. I have done such a thing many times over given a very well selected and treated room and a wide variety of not expensive electrostatics. I have no idea why you claim to have experience to the contrary - you don’t even provide room dimensions!