Originally Posted by TimVG
The point of diminishing returns starts at a lower price point than one may think
Depends on the speakers, of course. Designers who understand the science and strive to hit it as best they can at each price point reach the point of diminishing returns pretty early, while others never really reach it at all. I think the good makes start to reach it around the $300-500 range for bookshelf speakers.
So, I love the idea of this thread and how it started, but unfortunately and predictably, there's been a lot of derailment. It'd be great if we could kind of let all that be a bygone and get back to the central premise laid out at the beginning.
So, let's say for a moment that we live in a particular kind of fantasy world where  every speaker gets the spinorama treatment, and  the results are actually published and available to consumers. (And yes, this is a fantasy world.  won't happen because it's expensive, and even if it did, no way marketing people would actually allow .)
What would the consequences of this be?
Clearly, for the vast majority of people out there, this would change nothing. They'd still be buying $50 bluetooth speakers that are all bass and have monstrous distortion because of whatever it is that causes them to buy them now.
Even here on AVS, lots of people would be basically unaffected because, as can be seen by the responses in this thread, they don't care about the science. And, by the way, that's fine. We're talking about speakers here, not public health.
But for a select few (myself obviously included), this would be AWESOME. It would go a long way in ruling out what speakers we would and wouldn't try, and would give us some hope of really understanding exactly where diminishing returns start and just how much improvement we could reasonably expect for our extra dollars.
So, please, Kevin and Dr. Toole, as the very first post in this long thread promises, publish the spinorama measurements for as many speakers as you possibly can!
Now, on to the technical stuff. I have not read the book (maybe this coming summer I'll get to it), and I have a couple of questions that might be answered in the book:
* If we don't have full spinorama data, but the manufacturer publishes FR graphs that include on-axis FR and a few off-axis measurements of varying angles, how much do we really lose relative to the full spinorama?
* What about response in the time domain, that is, what you get in the spectral decay plots that some manufacturers publish? What does that add, if anything? It seems to me that good transient response ought to be important, too. Certainly not as important as accuracy, but to what extent does it figure in?
Thanks, and I appreciate the effort put in by Kevin and Dr. Toole.