I got my new mic from Anthem the Thursday. On Wednesday I decided to try to get rid the 40hz dip in my subs. Using 'quick measure' I did some some tweaking with positioning the subs and setting phase in the subs. I got the best QM reading by setting one sub's phase to 150* and leaving the other at 0*. The subs are both on the front wall facing into the room away from the corners, and fairly equidistant from the MLP. I wouldn't have thought changing the phase, especially to 150*, would make a positive difference, bit it seemed to. Any thoughts on this from you guys would be appreciated.
I then decided to do a new ARC run with the old mic so that I could compare it to the ARC run I did on Thursday after I got my new mic.
The first 3 images are the music charts and targets for the run with the old mic.
These next 2 pictures are the music chart and targets using the new mic.
Please notice a couple things.
First the huge dip at 11khz with the old mic is gone!
There seems to be a bigger dip at 1-2khz with the new mic. I don't know why, unless its really there, and the old mic wasn't picking it up. ARC seems to be taking care of it.
Next, please notice the difference in the room gain for movie and music in the run with the new mic. The uploaded speaker levels were also different for movie sub (-0.5) and music sub (-1.5) in the Anthem setup menu.
In the run with the old mic I used Bob's method of making a 'same as movie' run and changing the speaker configuration by 'n'-ing out the unused speakers for music. The room gain is the same in with Bob's method, and the uploaded speaker levels were the same for movie and music subs.
Now ,since I made two separate runs for the ARC run with the new mic --one for a 5.1/movie setup and a 2.1/music setup-- I can't guarantee that I positioned in exactly the same spots for the 5 different mic positions in each run, but I did my best to make them as close to the same positions as humanly possible.
The lower room gain for music and the reduced speaker level uploaded for the music sub are consistent with the many ARC runs I have made using separate movie/music runs. The room gain is always lower, usually 0.5db to 1.0db less. The music speaker level for the sub is consistently lower also, usually around 1.0db less.
In all the ARC runs I have done over the years (I'd guess at least 30 runs) I have always had these same findings--lower room gain and sub speaker level for music. I'm pretty sure if it were due to mic positioning that some time the movie/music room gain and sub speaker levels would have been reversed, with the music settings being higher than the movie's. But this has never happened.
Has anyone else had these findings when doing separate ARC runs for movie and music ?? Would anyone who uses different speaker setups for movies and music be willing to do separate movie/music runs the next time you run ARC and post your findings. It might not prove that there are different algorithms for movie and music in ARC, but there has to be some reason for the differences when doing separate runs.