Well this is great tread. I found an EXCELLENT article all about Audyssey and I consider it a MUST READ for anyone with or considering Audyssey. I learned a tremendous amount of stuff regarding Mic locations and the concept of an "Acoustic Bubble".Page 5
is were the Article gets to the good stuffhttp://www.audioholics.com/productre...eyMultEQp1.php
Here are some quick sections for those who don't have time to read the whole article right now.
Measurement: At Last! The most important placement of the microphone is the first. Start at the position that, in theory, should give the best sweet spot flat-frequency response.
i.e. Place the microphone at the seat height which would put your ears and eyes directly in line with your video display and center channel speaker. In our situation the center of our sofa
is exactly 9.1 feet from the video display and our center channel speaker. Note that neither my wife nor I usually sit in the center of the sofa.
I sit on the left side of the sofa and my wife sits or even lays down on the right. The goal is to calibrate for optimal flat response performance within the acoustic bubble. The optimum acoustic bubble shape will be determined by the seating arrangement in the room.
All other microphone positions were around different areas on, standing behind, and leaning forward on the sofa. My leftmost regular seated position on the sofa was run twice. My wife's rightmost normal sofa viewing position was also mic'ed twice. This double-mic'ing for data acquisition gives a higher weighting to the two most often used listening/viewing positions. Moving the microphone just a couple of inches within these two weighted measurement locations should give MultEQ Pro good, more diverse data in these most important areas.
- Mic position 1: The center of sofa, mic 35 H, one data set/8 ch.
- Mic position 2: My left side of sofa seat, mic 35H, two data sets/8 ch.
- Mic position 3: My 5' tall wife's 30H right sofa seat; two data sets/8 ch.
Note: This position is below the level of the sofa back so the rear surround channel would theoretically have to boost its SPL level a bit on these two data acquisition runs.
- Mic positions 4, 5 & 6: One data set/8 ch. each was run at the left and right sofa arms. The height here is 24. I placed the pillows we often use on the sofa's arms when we both lay down across the couch and watch a movie. The first two positions form the outer width-wise perimeter of this oblong acoustic bubble. A third 24H data set/8 ch. was made to the right-center of the sofa to simulate when I'm sitting up watching the movie and my wife puts her head on a pillow on my leg.
- Mic positions 7 & 8: One data set/8 ch. each were made at 30 height and 7 feet from the L/C/Rs at left-center and right-center front of the sofa. These two positions form the front portion of this oblong acoustic bubble and simulate unbelieving audiophiles leaning forward as they always seem to do at the same time their jaws' are dropping.
- Mic positions 9 & 10: The last two data sets/8 ch. runs are at 66 height and 1 foot behind the left-center and right-center of the sofa. These two positions simulate the casual unbelievers who don't want to have to sit down to enjoy startlingly good sound.Hey all anyways, please please read and comment back on your thoughts. I am anxiously waiting for Marantz to upgrade their top of the line receiver with Audyssey and hopefully HDMI 1.3. Then I can upgrade. If they don't I may just get this Audyssey Sound Equalizer....