detailed specs are a great guide but they only go so far for me. i MUST be IN THE ROOM with the speakers, playing MY music ONLY, what i am familiar with. if it sounds musical but doesn’t image well, FAIL. if it images like 3D holography but sounds bad, FAIL. gotta be the whole package, with imaging AND great sound [with a notably luxurious never-flagging EASE] that never fatigues, never is edgy even with harsh-sounding material IOW it doesn’t make edgy-sounding stuff more edgy. the system must make low-level signals clearly audible with no straining to hear. my present system using Thiel cs.5 speakers does this, and before that my maggies did it. the energy 22 pros had it about like my thiels. the snell class A [revised] had it. a speaker i couldn’t afford or even have room for, the magnapan tympani IIIs, they had it in spades. so to answer the OP’s query, it can’t just be one thing. obviously, if the speaker is a 2-ohm power drainer and amp wrecker, it is disqualified no matter how otherwise splendidly it performs as i can’t afford a krell monster amp or its ilk. so there are practical considerations as well.
When choosing new Speakers, what matters most to you?
When auditioning new speakers have you ever listened to a pair you thought you really liked only to realize you didn’t like them at all after seeing their measurements/specifications? And I’m not talking about speakers that would be too difficult for your electronics to drive but rather, you just didn’t like their waterfall plot, or their frequency response or some other measurement even though subjectively, you loved the way they sounded? Conversely have you ever listened to a pair of speakers you did not care for only to change your mind after seeing their specs?
Assuming speakers can be easily driven by your home electronics, in other words, no compatibility issues related to sensitivity or impedance, what is the single most important thing you look for when finding speakers you’ll enjoy listening to? How do you go about confirming the speakers you buy will be enjoyable to listen to in your home system?