Microphone placement?

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

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208 Comments

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    Argifotini1992

    Also when I see movie I got less bass.Always in comparison without audyssey treatment

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    Audyssey Labs

    Argi, I will move this to email as it's easier to go back and forth.

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    Ram

    Hi Chris,

    I have a Denon AVR 1911 receiver which has MultEQ with Bose (Acoustimas 16 II 6.1 channel speakers) and I have a question about placing the starting position of the mic  based on my TV placement. As per your document, I have placed my TV on corner of my room ie., where you have shown the front right speaker.  I can not place my TV just opposite to the couch as I have a glass patio door. I would like to know what is your recommendation to measure those 6 listening positions. Can I still follow the 1-6 position per your document? or 1.2.3 as per the document and 4.5.6 in front of the TV.

    With my existing calibration, I feel the Audi Dialogue is not more clear from the center speaker or front speakers

     I appreciate if you could guide me on this

    Thanks

    Ram.

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    Audyssey Labs

    Hi Ram,

    Yes, I recommend that you still follow the same pattern.  But, in your case I would take the measurements at an angle to match the direction that your couch is facing (i.e. towards the right corner).  It's important to make sure that the speakers (especially the center) are facing the listener and are not pointing over your head or down to your feet.

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    Ram

    Thanks Chris for your quick response. Actually, my couch is not facing at the same angle as the TV is placed. Couch is facing just opposite to the patio ie., not towards the right corner.  This is to avoid the cross gap between couch and the back side wall.  My center speaker is facing towards the left most listner of the couch and partially facing the center seat of the couch.  I have kept the center speaker at the back side of the TV using a stand which is half feet highter than the front speakers and just above the TV top.  It is bit over my head in fact. I have placed my acoustimas module at the back side of the couch to reduce vibrations pass on to my neighbour who is at the right side.

    Given in this situation, I hope I can still follow your recomendations per your document. Also, do I have to remove the couch during the measurement as I have placed the acoustimas module at the back side of the couch.

    Please advice. I appreciate your response as always.

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    Audyssey Labs

    Hi Ram,

    In that case, you should use the recommendations in the diagram.  You should not remove the couch during the measurement.  

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    Matt Butler

    Chris,

    I ran the setup multiple times and find that although the settings seem fine, fronts are about -2 each and the rears are about -5 each, my blu ray films have most of the main sound coming from the rears. This seems strange since i am used to them being in the front with the rears shadowing them instead of vice versa. I am on a Denon receiver.

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    Audyssey Labs

    Hi Matt, are your surround speakers pointing to the listening are where the mic was placed?  If not, it's possible that their level was not properly set and they need to be turned down more.

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    Matt Butler

    They are the older paradigm speakers that have speakers on the sides of the speaker box instead of one in front. It is supposed to send the sound towards the walls that way. So maybe since they are sending sound toward the mic, it is causing this?

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    Audyssey Labs

    Hi Matt, it sounds like they are dipoles and so they are designed not to send direct sound to the listening area.  But for them to work correctly the face with no drivers has to be pointing at the listener.  

    The other explanation is that before calibration you may have been accustomed to lower surround levels and it now sounds different when the surrounds are calibrated to be at the same level as the other speakers.  

    In any case, there is no harm in changing their trim levels from reference to match your preference.

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    Matt Butler

    Ok, Well, I repositioned the speakers and Audyssey set my crossover in the rears at 100 hz and the center at 90 hz fronts at 80 hz. Upon my research it is recommended to have the speakers at 80 hz, is there a reason for this change, considering Audyssey originally programed them at 80 hz? and what does this change in frequency mean?

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    Audyssey Labs

    The crossover recommendation is based on the measurements in your room.  So, it's not surprising that the roll off frequencies changed as you moved your speakers.  For example, if the distance from the wall changed then it is expected to see a change in the roll off frequency.  That's the whole point of measuring and not going by the theoretical spec!

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    ryan daley

    Hi im running a 7.1 speaker set up. I followed the microphone placement guide and here are my results, i have klipsch rc52 center: 150hz, klipsch rf52 fronts: full band, definitive bipolar bp1.2x surround: 100hz, klipsch kw15 sub: 80hz ,bose 301 surround back: 60hz. my reciever is the onkyo 805 and this reciever does not have a small or large setting my question is how do i know if my speakers are large or small? Onkyo recommends switching all settings to 80hz thx but after i ran the audyssey following the seat set up guide the sound does not sound that great using the 80hz thx mode.Should i run the audyssey setup again? the audyssey suggested results sounds better than the 80hz thx settings

     

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    Audyssey Labs

    Onkyo uses different terms for Large and Small. In Onkyo products, Full Range is the same as Large. If there is a crossover frequency defined (e.g. 80 Hz or any other frequency) then the speakers are set to Small. That means that content below that frequency is being sent to the subwoofer.

    Audyssey measures what your speakers are doing in your room and recommends a setting based on their placement. That's why it sounds better when you go with those settings.

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    ryan daley

    before i found this site i was setting up the micphone on my couch with pillows that being said i read that with the audyssey set up i should have my subwoofer 3- 5 inches from the wall but klipsch recommends you to have it 6 -12in  from the wall. my sub is a 15in sub the ksw 15. when i ran the set up with the micrphone on pillows on my couch my sub would come up 20 ft away from my listening position thats was with the sub 6 to 12in from the wall but  my other speakers would come with acurate listening distance. when i ran it with the reccommended set up seat chart i got an acurate distance from my listening position which was 15ft. does it matter how far yor sub is from the wall? or was it the fact that i ran the set with pillows the first time instead of a tripod

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    Owen Heuston

    Hi Chris, I have a question for you that I hope you can help me with.  When using the Audyssey 2EQ speaker calibration,  I have noticed that my surrounds are louder than my front speakers and seem to be louder than all my other speakers after the Audyssey calibration. Now it might be because they are 10 ft from me compared to the 14 ft of the fronts, but I thought the Audyssey calibration took this into account. My question is that if I try doing the level calbirbation(making the fronts louder, turning down the surrounds), will I be negating what Audyssey did?

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    Alex biwald

    Quick question i  have a Onkyo 7.1 sound system it came with you companies mic and i was wondering how much should i turn the subwoofers  volume up like  half way or al the way up when performing the test?  and also i only have one main listing point it is on my bed i use phone books then put the mic on top to do the test is this ok? and also i connected DPLIIZ speakers so i am know running a 9.1 setup will those speakers be in the test to? And my rear speakers are super close to my ear about 12 inches would that effect anything? 

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    Wim Holthof

    Hello Chris:

    My  question is for 8 position calibration from my Denon AVR-3311.

    I have  Front, Center, Wide and Surround small speakers and one Subwoofer. Your pdf gives 12 measurement. My primary listening position is the back couch direct on the back wall. Across from the back couch on both site a little couch.

    How far must the mic. minimum from the back wall and what is the best measuement position.

    3 measurement on the back couch, 3 two feet forwards and 2 measurement one feet between or

    5 measurement on the back couch an 3 two feet forwards

    Thanks,

    Wim

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    Bhanu

    Wim - Just went through this with my 3311.  After being dissatisfied with the sound for quite some time (but used DynEq), I tried the measurements to be almost in the sweet spot but still little back since my couch was to the wall.    So, in the above case what worked for me was 1 position right in the tip of triangle but a long triangle and then the rest with tripod on the floor in front the couch but mic coming up to the ear level.   I took 6 measurements.   So in summary...if your wall is right behind the couch...do not take any measurements on the couch.

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    Dag Johnsen

    I am using a Denon A100 with XT32 in a stereo setup including subwoofers. Pro Kit.

    I was wondering, would it be better to point the microphone towards the speakers instead of pointing straight up, since I only want to measure those two front speakers and do not need to consider sound from rear speakers?

    I measure a difference in the treble of approxemately 3 dB when pointing the microphone in an angle of 15 degrees towards the center between the front speakers compared to straight up in sweetspot.

     

    Dag Johnsen :-)

     

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    Audyssey Labs

    Hi Dag, No! Pointing the microphone in any direction other than the ceiling will give you very big errors in the measured response.  The microphone is calibrated for pointing up.  It makes no difference if you have 1, 2, 5, or 11 speakers.  The mic must always point up so that it properly accounts for sound from the speaker and sound reflecting from the room.

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    Jeff Coil

    Hello Chris,  I have a dedicated acustically treated HT with two rows of seating.  The second row is on a 12 inch riser and the "ear positions" are much different.  Is there any standards to follow on this type of setup?  I want to maintain the sound quality of the second row and not just the primary seating position.  Any thoughts?  Thanks a bunch

     

    Jeff

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    Audyssey Labs

    Hi Jeff,

    I would recommend taking the measurements in the second row at ear height, but making sure that the mic is not too close to the back wall.  This may mean that it has to be placed forward of where the listeners heads will be in the back row.

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    Danus

    Hello, I'm trying to use MultEQ in a bedroom setup.  I wanted to know if the 6 points used for a typical living room  sofa should be used when setting Audyssey for a bed?  It makes sense to run the first 3 measurements at the head of the bed at ear level but I'm trying to figure out if the remaining 3 should be near the "middle" of the bed (~1 meter away from the head) or somewhere else.  The bed is centered to the front speakers.  Thanks!

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    Audyssey Labs

    Yes, I would recommend following the same pattern.  The basic principle is still the same: the algorithm needs to sample points around the listening area.

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    Bobby Lisanti

    So Chris,

    If I place the Mic right in front of my seat for position # 1 were talking around 2 feet forward from the actual seat will that make a big impact? or should I go back and take the Tripod and sit it on the seat? Also my bookshelf surrounds are about 2 feet above ear level on shelves should I point them in on an angle or straight ahead, there seems to be so many different takes on this?

    Thanks,

    Robert

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    Audyssey Labs

    Hi Robert,

    The tripod should be on the seat for best results.  If that puts the mic 18" or closer to the back wall then move forward a little to avoid that.  

    Surround speakers for movies are best when reproducing diffuse sound.  That's why dipoles are ideal for surrounds.  With direct radiators you don't really have much choice but to point to the listener.  Placing them up higher than ear height helps sound bounce around the room more, but not as well as dipoles achieve.

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    Bobby Lisanti

    I will redo my setup, so I just want to make sure I understand correctly, if I place the tripod on the seat at "Ear" level how far from the back of the couch should it be? I have a leather recliner and sometimes my wife and I recline when watching movies and TV and suggestions with that?

    Thanks in advance!

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    Audyssey Labs

    The general rule is: the mic should be exactly where your ears are when you sit, *unless* that places the mic within 18" of the back wall.  In that case, you should move it forward a few inches.  The rest of the positions should be as described in the diagram above.

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    Bobby Lisanti

    Chris,

    If you put the subwoofer level up all the way it will give you an incorrect reading? right?

    I think I did that by mistake, I read somewhere my db level should be around -10db or less on the sub, My reading that I got was  -12db is this correct what is your suggestion?

    Thanks,

    Rob

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