Great replies guys,....agreed on all counts. Besides all those mentions of the word seamless in the various audio publications, there is yet another mention of it in a technical whitepaper entitled "Coaxial Speakers: Separating Facts from Hype" 'Another Frazier Whitepaper' that contributes the following DEFINITION for the word seamless as it pertains to audio speaker design;
Seamless Crossover....
"to make the crossover transition undetectable (inaudible and unmeasurable), not just on axis, but also at all angles..."
'Seams'
psorry could not resist) Seems like someone out there in the speaker design world thinks this word exists and has meaning and further is associated with a design goal for audio speakers.
There are many other examples out there of this being a notable concept to people who know a hell of a lot more than I do. It is definitely possible that I have this all wrong and I am reading and
trying to learn from others who are just as wrong or misguided as I could be.
Amir: I respect the rigor with which you go about this and frankly I tend to treat this as (what it is for me) a true hobby/passionate pursuit to listen to great music. i don't claim to know all the answers.
I do virtually 100% of the time write/speak exactly what I mean to convey and tend to choose words carefully. No one's perfect after all and I do 'flub' up frequently, but at least the goal is there
. I read
my post before sending and just re-read it. I did not 'insist' anything nor was I dogmatic; specifically I gave what I think of in terms of a definition of seamless for audio. Apologies if it was confusing
and you thought it was a proclamation. You'll note also that there is more than a bit of latitude/tolerance for error in what I wrote, i.e. be careful to allow for reasonable levels of variance, etc...nothing is perfect and no speaker
will every be perfectly flat in measured amplitude at every frequency throughout its spectrum. If I don't 'get' all the academic nuances here forgive me but I am a realist and think that what we hear can
still be perceived (and in fact) be seamless to certain tolerance of error to meet the requirement.
That graph on the AERIS is one I've seen before. Two things should be noted; (1) the tests were conducted with the 'Wavelaunch' processor which is a XILICA pro studio DSP (model 4080 I believe). The
XILICA could easily have been utilized to further improve the performance of the speaker in the room to where that measurement graph would have indicated better performance than even what was shown.
That graph did not show the effects of using Wavelet and its full EQ; would be interesting to see that graph out of the same reviewer as well...
(2) the review noted that the AERIS was the flattest loudspeaker he had ever measured or something to that effect; that's worth noting...
As far as Mike's room and speakers, my gut tells me that we all have something to learn from his system and the MM7 design; I have no vested interest in saying so and could likely find others that fit the same criteria.
All this without seeing a graph because frankly, it's more about what I hear than empirical "stuff"....
Just a rambling mess from an audio-nut...