Originally Posted by Srgtfury
The Lex Mp20 seems the long term choice, but Fury has a few questions, please. Could someone, who heard the setup in the "trailer" describe the dimensions of the listening area and the speakers used/installed, please?
The demo at CEDIA? That was for QLS only. It used JBL speakers all around.
Were the in ceilings from Revel used in 12.X or some other configuration/speakers.
No, they were small boxed JBL speakers hanging from the ceiling. This was a retrofit situation as the truck was not originally set up for this application.
Seems Fury recalls that a poster noted that a 5.1 with that processor sounded the same as 12.1, but Fury could be suffering from per-Holiday confabulation here.
No issue with your memory. They showed extraction of five additional "channels." You can get glimpse of the speakers in the pictures in this thread: http://www.whatsbestforum.com/showth...und-Processing
. Sorry for the poor image. It was dark in there, no tripod, and I had a lousy position to boot
Also, how "automatic" or ahem, semi-automatic would the room correction included in that piece likely be?
Again, the demo was about QLS, not room EQ. I can comment on the system used currently in JBL Synthesis (ARCOS) which is slated to go into Lexicon MP-20. The process is completely automated. You set up the mics, tell it the speaker types/models, and the system does everything. I have post this picture before but take a look at the left hand column:
Those are the steps performed and it is all automated and in that sequence. You just sit back and watch the machine do its thing.
Could an end user, who is not professionally trained in that application be able to implement its function in a reasonable fashion?
Again, my comment is related to the JBL version and the answer is absolutely YES! It really is automated. The reason end users can't do it today with JBL is that it requires an expensive measurement kit with 8 mics and DSP processor. And of course, we can do a bit of hand tuning post calibration if necessary (usually minor tweaks for bass response). You need no knowledge of acoustics, speakers, etc. to perform it.
I expect the system be simpler to use yet for Lexicon. But I have no detail as of yet. Per above though, even if it is the same as JBL Synthesis it is still readily manageable to anyone who knows how to run a program on a computer and hook up microphones and such.
Fury suspects it is kind a like display calibration, in that the end user can do quite well,to taste, calibrating a display, but a professional can do a better calibration.
Vast majority of pros have little acoustic knowledge. Sad but true. There is so much folklore and differing opinions that even if some of them wanted to learn, they would have a tough time doing so. Fortunately Harman does extensive research into what makes good sound here and has automated the process per above. The case becomes especially easy if you use any Harman speakers (Revel, JBL) as the system then knows their response and makes sure that it doesn't push the speakers to do what they shouldn't and follow their designed in sound power.
Using Harman speakers with ARCOS also makes sure that you can't blow up your speakers as the system knows what they can do and how far they can be pushed (especially good with JBL speakers which can handle quite a bit of abuse). This can be a real issue with systems that don't know the speakers.
The difference, Fury suspects, is that there is less a difference in sonic calibration taste than display calibration taste (many do not prefer a professionally or even non professionally calibrated display, for whatever the reason).
Oh, it is the opposite of what Fury suspects
. Video calibration is dead easy compared to this because we know what is "right." We know what the source looked like. With audio, there is no such "truth." If you play a song, how do you know the highs are not 1 db too high or too low? With video, we know that. We may not be able to correct it but we know how far off we are.
Fury thanks all previous participants in this thread and appreciates the passion that the "question" he "asked" engendered, necessitating a "clean up" of certain posts.
Thank you very much
Amir thanks your good questions and attempt to summarize