"Musical" subwoofers? Advice please on comparing JL subs

It's hard for me to exaggerate how much all this helps me and how much I appreciate it. In this case I don't feel discouraged by the differing opinions, as I know there are many paths to a good result and each post is thoughtful and informed. For example, I know that Eric is correct: a CR1 + F110 would cost close to $7,000 new, and if I were "very experienced" or had calibration tools, I could achieve similar results for much less money. (I'm not and I don't, but I also don't have the big bucks to throw around.) 

Let me say that I appreciate the recommendations about different subwoofer brands. I've heard great things about REL, Rhythmik, Hsu, and others. And @bailyhill, I have huge respect for Vandersteen and John Rutan. I seriously thought about the Treos before making the decision to try near-field. 

@mijostyn, that's an excellent description of the process. I've read many explanations of sub placement with the Fathoms but yours was particularly helpful. Placing the subwoofer *before* the DARO sounds exactly right. I am worried about the phase alignment but your recommendations are very helpful. And YES about the crossover point for mini monitors.

@diamonddupree, hey now! I didn't mean to suggest that DARO doesn't interest me, just that I wanted to clear away as much as possible to get to my underlying question about "musicality" in subs-- and thus special thanks to you for taking that question on. What you write is exactly what I was curious about. I've just added "Wood" to my Qobuz list. Also, I'm not sure if your name is a reference to that band beyond description, but if so, right on, brother.

@audiotroy, I have to say that I find it off-putting when a dealer disparages a line he doesn't carry. I also think that, when you're presenting yourself as a professional selling specialized audio equipment, you might want to take the time to spell and punctuate. I genuinely mean that for your own good, as your words make an impression. 

Thanks again, everyone. I feel like I have a MUCH better sense of how to think about all this.

Not Klipsch...BOOM BOOM....

I forgot to add to my post, as some have recommended SVS is good, using an SB1000 myself for 2 channel and dual PB1000's for HT.

There’s no such thing as a "musical" or ("non-musical") sub. It either extends to a certain range at a certain decibel level within an acceptable range or it doesn’t. Don’t get caught up in the JL "musical" hype.

Some of the others are right about multiple subwoofers. You can read all about the reasons and placement in Harman’s white paper. To skip all the technical info just go to Conclusions to get optimum general placement for two or four subwoofers, although it’s also advantageous to understand why you place them at certain wave length distances, but the Conclusions will get you close. And although it doesn’t include all subwoofers, you can go to Data-Bass to get tested specifications on subwoofers.

Q: How many audiophiles does it take to screw in a lightbulb?
A: What kind of light fixture is it and how is it wired? Is the bulb dimmable? A watt is a watt but some watts are brighter than others. Before you change that lightbulb, have you considered room treatments? And so on...

I'm goofing around and I really do appreciate all the different opinions. (By the way, I have no idea if JL claims its subwoofers are musical; that was my word, not theirs.) 

So here's a question that should have an actual answer: at what hz point does the average human ear start to discern music, timbre, nuance? Is the lowest note on a piano, at roughly 28hz, just a low rumble of vibration, the same on a Steinway Grand as on a cheap cottage piano? And if that's the case, at what point on the keyboard can most people start to detect a note with resonance and beauty? By the way, I do understand and accept the physics behind multiple subs--no argument there at all.