@engineears would you like my address? LOL.We can’t ignore physics.

I heard those say no music below 40 Hz. I didn’t believe it. Rather than buy a bunch of stuff I don’t know how to use, I thought I would download a cell phone app, spectroid, I believe. I thought I have good low bass. I do. 30 Hz tone plays well. Then on to music. The best I can get is 35 Hz. There just isn’t much going on below 40 Hz. I am not sure if the free phone ap is right but it shows test tones accurately. Then I found if I turned up the bass crossover gain, the room did not overload with bass. And no booming upstairs.

Speakers made and marketed "flat to 20 hz" sounds like a good idea until you see the size and cost that results.

This one of the most interesting threads on this subject.

the number one reason for problem bass that i see in people’s systems is caused by non ideal speaker and listener positions.

speakers and ears too close to walls or large surfaces.

speakers too close to each other.

stand mount speakers on poor quality stands, shelves, and too high from the floor.

getting the best bass requires positioning flexibility.

Here’s a good explanation with diagrams by B&K who makes measurement microphones (their professional and consumer high end mic division was taken over by DPA several years ago. They rank right up there with Schoeps microphones).
 

I am perfectly content with the bass response from my Vandersteen Treo’s and the positioning in my listening room. I have also listened quite a bit to friends with Vandersteen Quatro Wood and Model 7’s that sound fantastic but in my setting I don’t feel like I am missing anything. It’s all about what we hear and enjoy and I am often amazed at how great my system sounds. 

I think some people  add Subwoofers to a system and don’t get them dialed up properly which is not always an easy task and what you get is boomy overbearing bass.
I added a pair of subwoofers to my office system with stand mount speakers and until I got the subs tuned in and blending in with the monitors the bass response was boomy and awful. There are some people out there (probably not on this thread) that want the bass to dominate the music but not me. I tuned in the subs to blend in with the monitors perfectly for my ear and they disappear in with the monitors while producing a great sounding bass response.

And I agree with what others have said that while it does come down to personal preference some folks just don’t know what proper bass is supposed to sound like.

Why do so many people have problems with bass?

Geez guys. Imagine having bought your 1st high end system and then coming back to the dealer and asking him/her, "Why am I having trouble getting bass from my system?" And the salesman giving you the theory of bass, the theory of reproducing bass, theory of the making of a bass instrument, the wavelength of the bass note and on and on he goes with all theoretical factors and theories OF bass but never really answering the question posed.

Would those theories OF bass make you feel better about the bass shy system you just spent a lot of $$$ on? Or would you like a straight answer to the question. The wave length of a certain bass note is the same today as it was in 1900. It hasn’t changed. Nor have the rooms makeup changed very much either except larger rooms. But my 60 yrs of music listening has shown me that the bass response of the typical speaker has changed a lot, starting in the 1980’s. Before that I got good bass from every speaker I had in every room I put it without a subwoofer. But today, subs are almost required to get proper bass unless you spend lots of $$$ on speakers