the paradox of accurate speakers

do all so-called accurate speakers sound the same ?

Yes accurate speakers do sound very close...not perfectly the same (that would mean they were perfect) but very close.

There are a great many "so-called" accurate speakers (you can call anything you like accurate, as it is an over used term)

Even if there was such a thing as an absolutely accurate speaker, it would be rendered less than accurate when placed in a given room. That's because the room is also a speaker enclosure. Just like a speaker cabinet, the room imparts standing waves, reflections and refractions that defeat the illusion in just the same manner as the speaker cabinets do.

That's the dilemma - even if you overcome the laws of physics that stand in the way of a perfect speaker (massless driver with infinite rigidity, inert cabinets and infinite baffle with no refraction energy), the room it plays in spoils everything.

To throw another wrench in the works, not all people hear the same way due to age, physiology, whatever. So if one builds a speaker he voices as "accurate", another may disagree.

Another wrench is that inaccuracy is inherent to recording as well as play back. If you had an accurate speaker you wouldn't really have a certain way to know it, & you might really want the speaker that exagerated what the recording diminishes & vica versa.

Just because it is considered Accurate does not mean it is absolute, like in art there can be 2 seperate "Accurate" renditions of any given item but there can still be and are subtle and profound differences.
You can apply this to so many things like every instrument, take 2 Piano's that are both tuned.....they will sound Accurate but different.

And yet, scales can be accurate or not, meters can be, gas gages, weather forcasts, so many things...so why not speakers?