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Room or speaker resonance???

I received an interesting test CD with Audio Magazine. It has test tones to determine ideal/optimal distance from wall. My measurements are:
50 Hz - -1 dB; 70 Hz - -10 dB; 100 Hz - -6 dB; 140 Hz - -10 dB; 200 Hz - 0 dB; 280 Hz - 0 dB

Is this normal? Seems as huge dip to me?
Is this speaker (say a bad speaker element or bad crossover part) or room or both? How can I tell?
How would I go about to correct?
Thanks
dcaudio
acoustat6
357 posts
 
Hello, go to the site Home Theatre Shack here.. http://www.hometheatershack.com/forums/
download the Room EQ Wizard for free and post a measurement of your room response and it will be much easier to diagnose any problems.
But yeah it can be any of those things.
How does it sound to you? Thats the bottom line.
Bob
Post removed 
dcaudio OP
66 posts
 
Yes, I am using a Radio Shack analog meter. Could it be the microphone??

I have checked the VU meter on my preamp in, and the VU meter is set to a constant 0 dB through the measurement.
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