[geoff]

On 28/05/2019 1:16 AM, Scott Dorsey wrote:
James Price wrote:
On Sunday, May 26, 2019 at 11:26:37 PM UTC-5, Scott Dorsey wrote:
Very common.
The on-axis frequency response is a nice enough thing but doesn't tell you
very much about how a speaker performs in a given room, because many
listeners are off-axis and much of the lower frequencies are coming to you
by room reflections even if you are on-axis.

And -nobody- ever plots speaker distortion in a useful way.

So, just to be clear, even in the same listening environment / position,
differences are very common?

Sure, because technologies are radically different and applications
are different. You can have a big horn-loaded system with narrow angle
of radiation that is designed to play really loud, and you can have a
conventional minimonitor designed for close-listening and you can have a
big analytic-sounding monitor like a PMC and they will sound totally
different in spite of an on-axis third-octave response being the same.

Not only that, you can take one of those monitors into a different room
and it'll sound totally different. You can even put a blanket on top of
the console to reduce the reflection off the consolee surface and the midrange
will change complately. (That will affect measured response at the
listening position though.)
--scott


Or move your head a few inches.

geoff