Microphone placement?

When calibrating my system with MultEQ, where should the microphone be placed?

Have more questions? Submit a request

208 Comments

  • 0
    Avatar
    David Ferebee

    Hi Chris, Can you tell me the correct Audessey Mic Part Number for the Integra DTR-80.3?

  • 0
    Avatar
    Audyssey Labs

    Mic is ACM-1H

  • 0
    Avatar
    Roddis Larsen

    You say that if the sofa is up agains the wall the mic placement should be shifted forward 30-40cm. Should I change the distance setting after calibration then or do I leave it as is?   

  • 0
    Avatar
    Audyssey Labs

    The speaker distances (actually delays) are calculated from the first mic position.  If the first mic position is moved forward then, yes, you should change the delay settings by that amount.  Alternatively, you can leave the first mic position near the wall (so no need to change delays) and then just make sure the remaining measurements are not too close to the back wall.

  • 0
    Avatar
    Roddis Larsen

    So the first position only finds the speakers and the delay of them? Should I measure with a tape measure and change the settings accordingly? The right distance is never found with my reciever...  

  • 0
    Avatar
    ajsuperman

    Hi Chris,

     

    We have an ht room with 7.1 speakers, onkyo nr818, two rows 4 seater recliners, and the 2nd row is elevated 6"..

    I usually seat on the 1st row but i also want the 2nd row to sound good..

     

    where should i place the mic? "1st mic" armrest between seat 2&3(1st row), "2nd mic" between seat 1&2(1st row), "3rd mic" between seat 3&4(1st row)?

    where should i place 4, 5 and 6? 1 meter behind 1st row? same height as the 1st row or ear level of the 2nd row? or should i stick with the diagram 1 meter front of the 1st row? and also where to place 7&8?

    this is my first time setting up, please help me..

    thanks

  • 0
    Avatar
    Audyssey Labs

    Roddis: yes it's ok to measure with tape for the speakers.  The subwoofer usually has filters in it that add more delay so a tape measurement is not accurate.

  • 0
    Avatar
    Audyssey Labs

    ajsuperman: you should start the measurements in the row where you sit most often.  Start in the middle of that row and then move to the left and right of middle. Then move to the second row and take 3 measurements making sure you are not too close to the back wall (18" or more distance).  The final 2 measurements should be in the area between the two rows.  All measurements should be at ear height.

  • 0
    Avatar
    ajsuperman

    Thanks Chris, finished the full calibration.. is it ok if my speakers were set 40hz? or should i change it to 80hz(THX)?

    also i placed the mic on the 2nd row no more than 3ft but its not where the seating position is, should try placing the 4,5,6 mic on the real seating position even if its more than 3ft away? is it better to turn on dynamic eq or turned off?

  • 0
    Avatar
    Audyssey Labs

    The Onkyo 818 has MultEQ XT32 so the resolution of the main channels is very high.  There is no real benefit in moving the crossover higher than the rolloff frequency of 40 Hz that was found.  

    The mic does not need to be in the seating positions.  It needs to sample the central listening area so you have done it right.

    Dynamic EQ should always be on because it adjusts for changes in human perception at listening levels below 0 dB reference.

  • 0
    Avatar
    Fernando Rocha

    I would like to use Onkyo TX-NR818 to calibrate the room and my stereo monitors in the control of my recording studio. Would there be any special sugestion for diferent placements of the mic?

  • 0
    Avatar
    Mike Vlasenko

    Hi, quick question, after calibration of the microphone, where should the microphone sit? somewhere in the listening area or back by the receiver?

  • 0
    Avatar
    Audyssey Labs

    Hi Mike, the best place for the mic after calibration is back in its box to protect it from the elements.  The mic is not used while listening to content.  Only during calibration.

  • 0
    Avatar
    Marc

    The Denon AVR-1713 includes MultEQ XT but only offers a maximum of 6 measurements in its initial setup. After initial setup, one can go back and do 8 measurements.

    Is it worth the effort to go back and do the full 8 measurements in a smaller room?

  • 0
    Avatar
    Audyssey Labs

    Yes, we recommend to always take all available measurements

  • 0
    Avatar
    Alessandro Gradilone

    Hi Chris,

    I have just one listening position and wonder if I should place the mic in this position only or instead stick to the general rule and place it in 8 different positions. I mean to use 8 measurements anyway, but thought on doing all those 8 measurements with the mic placed in the same (only) real listening position, perhaps moving the mic about 20cm each way just to make sure it reads all acoustic information of that only listening position. Would that optimize the results of audyssey in that only real listening position? Or would you instead recommend I move the mic to 8 different seating locations despite being not real listening positions?

  • 0
    Avatar
    Audyssey Labs

    Ciao Alessandro,

    Audyssey needs to sample the listening area using the pattern discussed above.  It doesn't matter how many listening positions there are.  The algorithm needs the information from around the room as shown in the diagram.  Note: the 8 measurements don't need to be seating positions.  They are spaced by about 80 cm even if there are no seats there.

  • 0
    Avatar
    Alessandro Gradilone

    Hi Chris,

    Firstly thank you for your prompt clarification, but perhaps I wasn´t 100% clear in my first question.

    Since audyssey results depends on weighting all measurements it takes, and above you comment that "Yes, Audyssey automatically combines the measurements with the appropriate weighting. [...] If you want to give more weighting to the center line then you are doing it correctly: take more measurements there.", it would make sense to one seeking to optimize the results of audyssey in one particular listening position to take more measurements in that position and/or take the other measurements a bit closer to it. My goal is to maximize audyssey effects in one small area (the main listening position) instead of broadening/ softenning its effects in a larger area and I understood from your comment quoted above that one could accomplish that by taking more measurements in that desired area and perhaps enhancing further this purpose by taking the other measurements a bit closer to it. Does it make sense to take more measurements in that area we want to give more weight? And would it help to take the other measurements in positions a bit closer to this center area, like 20-30cm away instead of the standard 80cm?

    thank you for your time and I´m glad to say that I´m already happy with audyssey results at home!

  • 0
    Avatar
    Roman Smolkin

    Hi, I just got a new receiver with Audyssey XT and I'm really excited to set it up tonight.  My living room is not big and my couch is somewhat oddly shaped.  Basically where I sit over 90% of the time is not the center, but to the right of the TV.  The right rear speaker is actually like 1 foot from my ear.  So to make the system sound the best where I usually sit, do I start with the mic there and then go in like a clockwise order with the other positions?  The wall with windows is actually right behind the couch so can't really go back there.  Or should I start more like in the center of the room, or still in the center of the couch?  I never really sit in the center though, sometimes if I have a guest they might sit there, but still closer to the right.  Thanks!

  • 0
    Avatar
    Roman Smolkin

    After reading a bunch of earlier posts I have one more question.  So I just got an Onkyo TX-NR709 and I bought Energy Take 5.0 and BIC V-80 sub for it.  I also still have my old satellites from the much older Sony HTIB system.  So my question is this, would I be better off setting up two wide speakers in front instead of rear?  Further, should I use my old speakers as additional 2 to make it 7.1?  And if I do, should I put the old ones in the back or as the front wide?  Or should I just leave it with the good new speakers as 5.1 until I can purchase even better left and right, and if so with wide fronts or rear?

  • 0
    Avatar
    Audyssey Labs

    @Alessandro.  It's fine to do as you suggest.  I don't expect a big difference from the tighter measurements, but you may hear an improvement over the smaller area.  Worth trying.

  • 0
    Avatar
    Audyssey Labs

    Roman,

    The first mic position is critical because that is where the delays and levels are calculated from.  After that the order makes no difference.

    Yes, we find that Wides are much more important than Back Surrounds in creating an enveloping soundstage.  Wides can be any type of speaker as long as it's not a dipole type.

  • 0
    Avatar
    Roman Smolkin

    Thanks Chris.  So do you think I should put all 4 of my new Energy Take speakers in the front two as regular left right and two as high/wide left right.  And then put my old Sony satellites in the back for surrounds?  Or would it be better to put two of the Energy's in the back and my old Sony's as front high or wide?  Or would it basically not matter?  Is it a bad idea to even keep two of my old speakers in the mix with better ones?  My couch is right against the wall, so there isn't any room behind it, and my primary spot is not in the center of it but off to the right cause I can stretch out my feet there.  Lastly, how wide would you put the wides?  Should I also put them higher or just wider?

  • 0
    Avatar
    Audyssey Labs

    Hi Roman,

    It's generally better to have matched speakers across the front, wide and/or Height.  Adding two different speakers in the surrounds is no problem.

    The Wides should be at ±60°.  That puts them along the side walls about half way down the room in most cases.  They must be at the same height as the front L, C, R speakers.

  • 0
    Avatar
    Bill Korn

    I have an exercise room in my basement, approx 40 feet x 18 feet.  My TV and front speakers are along one 18 foot wall.  Normally I am listening from the treadmill and stationary bike, each approx 22 feet back, but there a total of 6 machines.  There is also a couch to one side approx  8 feet from the TV, and open space for push-ups, sit-ups, etc., between the cardio machines and the TV.

    Where should I take measurements?  The cable on the Audyssey mic won't reach to any of the cardio machines.  Should I place it as close to the treadmill as possible, and do other measurements around that area, so should I include a measurement at the couch and one near the floor in the space for push-ups?  That was how the Geek Squad did the initial setup, but it seems like the front speakers need to be a lot louder   when you're listening from 25 feel back.  (The side speakers are near the treadmill and bike, and rear speakers are at the back of the room.)

    Thanks for the advice.

  • 0
    Avatar
    Audyssey Labs

    Hi Bill,

    You should take the measurements in the area where most of the listening is done.  So yes, take them around the treadmills.  Stay away from the floor at all costs!  You can get a mic extension cord at Radio Shack or other places.  We recommend no longer than 25' extensions.  It's a simple mono minijack cable (female to male).

  • 0
    Avatar
    Kmkrout

    Hi Chris,

    I just bought a Denon AVR-1713 and in the initial setup, the diagram for the microphone placement conflicts with the MULTEQ diagram on Audyssey's website.  on the setup screen, the back row goes 2,1,3 (audyssey's diagram is 3,1,2), the front row on my screen is 5,4,6 (audyssey's diagram gives me 4,5,6).  Any reason why?  Which one should i follow?  Thanks!

     

    Kevin

  • 0
    Avatar
    Audyssey Labs

    Hi Kevin,

    The order of the measurements makes no difference after the first one.  

Article is closed for comments.