Where did all my mid bass go? - AVS Forum
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Old 08-21-2013, 11:49 PM - Thread Starter
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My first measurement of my subwoofer is indicated by the green line. You can see a nice little null there right at 60hz (I wonder where all my mid bass went tongue.gif) By moving my seating area 6 inches I eliminated the null and had a fairly flat response. After running Audyssey XT32 to smooth it out more I am in bass heaven once again. Oh what a difference 6 inches makes.

My subwoofer is the wonderful Rythmik F15HP Servo subwoofer. biggrin.gif

Just thought I would share.

update: I took at second look at how far I moved the mic position and it was closer to 10-12 inches. wink.gif
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Old 08-21-2013, 11:56 PM
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Originally Posted by Oledurt View Post



Oh what a difference 6 inches makes.
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Old 08-22-2013, 07:09 AM
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fairly flat? thats a +/-20db swing.
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Old 08-22-2013, 07:34 AM
 
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Originally Posted by basshead81 View Post

fairly flat? thats a +/-20db swing.

.......tongue.gif
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Old 08-22-2013, 09:31 AM
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Originally Posted by basshead81 View Post

fairly flat? thats a +/-20db swing.
+/-9dB, actually.

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Old 08-22-2013, 10:10 AM
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+/-9dB, actually.

correct...I meant there is almost a 20db difference from the lowest point to highest which would be +/-10db. But yes the exact difference is +/-9db...thanks for the correction.
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Old 08-22-2013, 10:32 AM
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So where is the mic position? Your left ear? right ear? middle of the head?

Just something to consider that there is spacing (more than 6") between your ears

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Old 08-22-2013, 11:24 AM - Thread Starter
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My mic position was the middle of my head at my seating position. I pulled the mic back toward my rear wall about 10-12 inches straight back and the null disappeared.

These readings are taken before audyssey was run so I realize that the second sweep is not flat. what I meant to say is it is fairly flat relative to the first reading.

I moved the sofa more than 6 inches after taking a second look.
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