Sometimes Hard to Drive Speakers are a Gimmick

TL;DR : Don’t be seduced by hard to drive speakers.  They aren’t more musical.

Many of your statements here and there are not valid to begin with, yet you are making a big fuss over them. Who said hard to drive (i.e., lower-impedance) speakers sound more musical? Where did you get that idea?

The sensitivity of the speakers, the crossover design, and the synergy between the amplifier and speakers matter far more for sound characteristics and quality. Additionally, to assess how hard a speaker is to drive more accurately, you need to examine the EDPR curve, which combines not only the traditional impedance but also the phase angle, giving a true measure of how difficult the drivers are to push.

Many of your statements here and there are not valid to begin with, yet you are making a big fuss over them. Who said hard to drive (i.e., lower-impedance) speakers sound more musical? Where did you get that idea?

Covered i the blog post. 

@erik_squires, I looked at your analysis of the Focal speaker in your blog post. What happens to the frequency response when those impedance-lowering crossover components are removed?

Duke

@audiokinesis - That's an excellent question.  Sadly the simulation and impedance and original hardware is all gone.  I should have done a better job of maintaining the data than I did, but I'll explain.

The mods I suggested were in two stages.  The first cap could be removed with a significant improvement to the impedance with little to no change in the FR.  Further impedance benefits would occur  IF the first coils in the LP filter were rethought and the 195uF cap was moved.  As I recall, you would need a rather large first coil compared to what was original, but it wasn't an extravagant cost item.  I wrote about this in detail here but sadly when I merged my blogs I lost a lot of images. 

"we have actual anecdotal evidence"

Which is it?  Actual evidence or [merely] anecdotal?  Who or what is your source?